Scott Joplin (November 24, 1868 – April 1, 1917) was an American composer and pianist. Dubbed the "King of Ragtime", he composed more than 40 ragtime pieces, one ragtime ballet (original version of "T
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1718033032ab5fc0d0af860ac1a38e5a640bda10b566a2368491ee03d234106c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f926e86a-9cd4-4ff4-bdbb-4deaa921fa8a.json and https://artists.proofprofile.net/proofs/artist/f926e86a-9cd4-4ff4-bdbb-4deaa921fa8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scott Joplin: 30 Works for Piano, Book Two (Recomposed by Luca Astolfoni Fossi)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019ef0da77fc24b3373afdc519c9b3b5b3fc9d9a7c3802283f2f7b9c921e440a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb091a6526270b0f1f92c7cdf87167ef11d08c4c3e5950f42620f14d6afcfbf0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17105902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5138e8ebee8652e5b02c13d632b844b4ed8ff0d3eb927d6f7e77c95a67a981. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d9a53992977f6000e98aa2175417b13e82afd7b0f66e5b62f0faacc361e8fe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7cf9fc03f5e9520f7fa694795e6b4be56ff09a01cb8f0feb053d85da4aa981. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33dc31a08d1c96ea2994fc81b86d8058573b27c49f46df186ce74a9c8e5e9ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b8f29e3aadfd5993566ec98d470867d792564ae32ff2dc13d54576ab888beb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9d45a648654fe41bd739d2c66c6619e1e28bed9b7dbeb0bb260ff91d6d9e6a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac568258054b4c6c71898e10b6ecf7e73206326115628b439e03ffa1ba940454. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e95b15a55266ec6a9fac1a017c585727d54b446a4b47046afeb933f43f256e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fe58ff86ac2877e8afa795c4981f84208dc2dd051da4adb7defc9b76e15340. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738a1646d6158e68aff98340247d6c782486665253325cc9d2e092e8aa90112b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc3929f61bf8dc97e5daf808449192e67bbc29db42ca84d1d69e2a114da8c3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1002221ce41d8ba7727c938e0af6ece1540ca9705e643e1f7cb16fd9d4a1530. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc0b124fdcc7df536beffb294b4370dd9a7738a70330854ec9c391b4103579c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792afca2c15546c01f0e99e62e75efa3eaa5315d1360f0f3db3b46eb0a249fa4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7417fe188bce8f8f75e562e4a3c8d2ea4c82a210563cb3ac34a462f7b3bc0f68. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO17015917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb27b5ec8c6b62d86ed2d378584cdea633301ca78f39f87c18971e2b1a13f2b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a611012ea09411962df3a4264db41d1d6b51542e4b3e691d57b39938e63a3b9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aff6023467368f0994fa62f3b9d951683eecead8c440d1baf5940ea989b070. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d6cbb959418df2780a43a2ba265d44ffb34bef26ee03bdd654e0b3f024163. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a39e950e47c3919fedd9760b472b01aa480b2073db5186c38f83a6d960c2b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770141646b64c81a4a30daf70ebc6aaedcc437525926b47fa65e0a40c470b91f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b292f3eb19c29a97dd4e5f0d020b02537fb15c773c482fdf155f53fc6eabeb1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270807503ee849640d917a78aaba9a36c335b1e47096c924af9cbc395150bd5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USF067302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955c35eb2fcd7b14cf9331e9a113f3f5c93c8ade3cabfdc504af6b0127bd790. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USF067302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ead9d19faa44951a53518e234bc4c4af1deb630a420afe1daa61868a5491cde. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789e8fa0fc353d76f223b8cd4b4456d78e8ce5896a6a6eee055fc739ec051a9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369caeae7567ddd6fb3c0b0e80e66d9f8616408111a446c7f46b211805bdeb21. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53242cb7657c251816b0ed64b8ac251deee83ed51af4279306ec1c83b3f6f98c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USF067102120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad84316f0d24367b58ba11391504c77c1a7b4c1dd147e4c97fbfacc0a330a3b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e30a1a9ec13189d07b001960d5e865cf1ba6368cc56addf35de5809c1b8c290. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077710870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a9585959005dd174897427244d2b54ef2a463bc45d41b6b05f9f09c0997599. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86259f7ba2be91d98fad15980fb1fb2cbb0ebc7d8db850121712e2953e974465. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482736aceccda53ecf3777ab5769e465425265a8775304919bb0de0b425e1ffb. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95053f5342a4d0a673b2350954e2f7cceb0243830e80ff8220934bd63de85764. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a3c650287ec09de7bb0ef6ab0b1d1fea0494642005c039324580d4e6d16017. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb5cf356e26807ae029c560354a3e3ee81eab45276e9e0f951689cefe2b11b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2901f2ff65b427a8c4c0dee0360398de2fc165e3c48bb043a023e317c8700b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2205e7a35b3489fdb07b33243798428fafb7b7b96040085f1857d4744a553014. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ab6961ecb5a50b154972688c0ab74f8ee71c871b44c34a7d218e850c071e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc4a4ee0b97ff57db37c6c02c23f1289d7d79524314f5055c587df97146e9b5. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ace122e2cef324dc7aa7fd6b61b3d8845110906bea37135de3e751fdb6814. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc868ec272be588c9af66c9f0ee0f323572651d8df74ea243996d2f42eca3a91. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ee4952233c97f2d567f435e0b65da698695be19a3010184b65d1e0e8841f27. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df24bdfcff00932990f3d38efd0a86cd6c1842a55507f09ad778b9b08137e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629915228f99c6670d3c0f728083f5e6ae88dc6c2b0f3d026b90a412a10e3f71. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a804c9fcdf7f6341bdfa57db46ee994fe3f6b997c2ad91273f38309806489. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba106caff75988cb837a39fe6303e964b80a1443df1ac771ff897546ab8648a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03d8cfce2074f073a238f6f9a31410a87e4c816255ae0189a553bea1d22db87. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebf0f193c7df1461da8883e1b1127512558b92a73c91a1ea9c903a7522df5a9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bcbb70095f90d7f973de227cf9ac1758d2b072fd12f848b13ed1682a3a2230. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf841787ec704ba6259d734c1dbe1a3e26990b3c9f46161d42b98b17f04028f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54de7990b245de88edc447c3fba85ed11368e30eff73ed3708a434f005266a86. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a425d130ff2117619d6bb7f98cf9bf229e3926432e7b08dc77b53f4730ff6c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dde0278772a50a2646ddbfda3051624114a7cf8762067200a4192f1d9c3c9c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6bda88d7f060ebb777221e3712c7380e9e0d5b90dce5308f3b20598345fcbd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ce085c87dafbcb234be65c43461bad96945198b58d5e4bfb16cce44ac8855. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575e9ea90ca798aa52156772a73e33145dd3932cf136f5778d4514ac5eef61e2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a34929ac7e12e745deea60188724d42b4343a097f8ba9d499e0e19a4592b39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58adfa9440bdf97c9cf445ded75480b4d9ffae95f769bfd88c68605cb9dcd65c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b641f6eb3e8861ace0e3e0ec062cdf199ee0b8fd2b4167c3dbb09099a3bdf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e74c99759547dd26a633f8c1b348ef9581c617b380331a1f2d44e5fa2725fd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a716d6a98f0e43c6e49d11b70d042279aaa1f7484373417c3587af5d0d9a72. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa5cfacd4f0636b8d9740165ca8a1515aaf6a868941c329acaab334010766fb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81800031.
Joplin, S.: Scott Joplin On Guitar, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3f6d61bbba8002eb979226b3645cd7e328f0e83be87ba9fba7ce943834ffab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961802030.
Music For Ballet Class - Well Known Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a21d4bd2500ac2b952fdc50a0a43ab7252755db91751030b1c53cc039a437. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX882312129.
Klaviermusik 50 Meisterwerke – Klassik die man hören muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62bad0cac765dd502c1c0f36492e93cc50ef446f0b5bdf5b32b1a9f8e66e7fc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef290ac0cf5336181fe758756029f2fae9dc1fd5604746401781c783d2b3228. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX882312147.
World War I - Centenary 1914 - 2014, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd028ea5a5fc243905dfb6ab130c3ca7a3185af58f97d089a7297736a9fb7162. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB639906608.
Petit allegro II (S. Joplin "The Entertainer")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda326dd6d11cd77d2f0bb6f8331f9c6ac7ae980d7bdc3d16d1825259545c9c2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRRAR1918969.