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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b836793420446a2443b1cef635fb7b90824454825c6ddc3e611d0b9c2387ef. 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/21c7be73-d5a0-437e-b84b-26583500e212.json and https://artists.proofprofile.net/proofs/artist/21c7be73-d5a0-437e-b84b-26583500e212.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5012449a7781bec3aca2a354b887822711c81ddf34e2c0dd537ff5258893818. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ESAAI0174886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dbc14ad96496089323c36c827ceb8c80d28864ca2149e9e84e371378d669a3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESAAI0174890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640e196b7b4fbaeec01d0a4f242bf200cce8a19737a985bf5eedecef0cf2bc41. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FR6V82589621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8c3ce026b8d6ca094d4c1e6252e70be4d71eb16d2aecabe2227660fa64dab1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR6V82589625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a48e972c02b63bdf0e17a89eb29987d0f297ae31c4073a337162ac233e740. 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/FR6V82589635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8313d83429b6c4ef84cda3d13b37682382486e1b39d8f8e3abb450e92a9e640. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V82591868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e35fa7814a9d8c2cbec2350a85363405f323c49278a0450138c2c7c2aa85316. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/FR6V82591869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ca4472584cac991b453fe61ffb6f6e2c22e3cb620627f30591b95b65fd02d2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR6V82591872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47091f86e0508a41cad08385740339e538b32664f6a8768ead12c835c3610ef3. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FR6V82591873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15e0aa5cc11c1633e81d807743bafe2459669103b703c0802e4bfebfa7c2b5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR6V82591874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919ee0b469607c8001f2f9ece21a2f04740551b491a4bdfc7c663f34526e1a54. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR6V82672437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b4ae643581f919af9f7cdb9c4073556d0d813c56a0ea280be33418dba41c50. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:45:58Z), 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/FR6V82672441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8739e8ad7fc4721ee962fe32333bf85e5e23b8781e645598984531c71756d89d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR6V82672443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0646643204e3618ed0912fd349054ff60029092878c53f63affd793d1addc96e. 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/FR10S1802359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f42caf139b421fa33a90f9ee80a9cfcb9bfa066602fe8c5c8bbe827f187a249. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S1802360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431f48f1d611dc608a427da9182afdcf53569951b66c060b64b7d7abb6a7532. 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/FR10S1802361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5caa5f4ffabe8cb6b5ce1c41c745c0f3297764bae2d80b66d9d70471e3fc182. 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/FR10S1802362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903e90acd2da415765fec6f2dab358083c93e4d9a6efec1979185782c4870d9. 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/FR10S1802363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98df97960c268f3d4a74d204ba2b0d9a2138b42ab5e7dc544fa70d942041e9. 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/FR10S1802365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079dbae6ea78b98f6bfb1f9ab4dc161dcdb015be165c690a38e766195c57f4de. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S1802366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ef2a065484665d62e34d6d395a77f15cbfa17f456e97b6112fe131f96668a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR10S1802367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f285c67d8328c16f047bb845d9600eccf1e788bf84f0c8be46f8843402c06b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S1802368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b74550f2c430f04a710fe5debe49b8f9920c315ad372950c80508a1583420. 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/FR10S1802370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a5772a2a2c4c963586598dd75e3097ff673915922e5432da190d6179fa903a. 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/FR10S1802364.
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 0x8d3e124e59a7316d12b9e76ef48b766d52f0405cc082c5791b3e4c8206263f3e. 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/FR10S1802369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8963c9ec37d7ea14743fecf51a7a5e6db49bcc3fe2c7fd43044e36701ea10174. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA052213470.
Beto Lavaplatos (20 Aniversario Tiempos Extras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f4157b8b720ffce492d119ad18617e1ded51216742bf0e8caf7df6d617a982. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA052415690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba4e9e4279f135f60871b69656a79c4ed573adf73989b0e60ec6a72dcf2c5e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX872585866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519c0f7fb3dad135ac0d348631df0250141b04dd03a53a5d7668be95b5d6a9df. 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/FR6V82589975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a79d51834a683f2fae91017ef11d9ae1a01db881a84a22d1b5983262da594f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6V82598375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d453236762035746409fddf7d19978c47e40e445fc800291589f84caaba1b3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR6V82591493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2766873ef470f2e274838116936203bfeff6755afb008e5ef63d5f3a779366a4. 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/QMDA71474951.