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 0x3132381cf768e0c92713b8b604c1e7e023b1620a9cc862cfb7c9634e0675b0bc. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95642a62-e5d7-489a-871b-19f2be7fe5ae.json and https://artists.proofprofile.net/proofs/artist/95642a62-e5d7-489a-871b-19f2be7fe5ae.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 0x1371856ad614f6134a6b9e14eac4277894a8df784866790780ccbffc59387021. 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/USDY41677087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114fdb5fa3fcf29bf9cbdc33ef2e25e2d3dcb522ba7c4c96d11ced3173dbd1e8. 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/USDY41677089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701ba1d6de2e33d8cc9f1bc00b9699a40316c1b5a90ddc12bf4997524ee64c5f. 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/USDY41677090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3cb5efbc1d6b2f817e4f0050632260bc83a172b96cef4758ac251d704d0be4. 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/USDY41677091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f5f21f371fa404b11b4b0800dacf5f51e6867423ba58d6c397ca8d303ba09. 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/USDY41677093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ab729ef25c83c91383a1eccf6ea8162bf62da8a06a5497537dcefa971e7f6. 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/USDY41677095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea0ab335ca4a7ba71b5333b5e5902f44258552be0f5ad7f6f81510ab9406a65. 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/USDY41677096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce019acf34a0dc8cc7f90a96c784c09684b01c18ea4d79e3cae628f3c75999c. 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/USDY41677097.
The Vault: The Best of the Jazz Jousters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a6f281395b33dfc91e29f3b87e33006441923999c6b15952363d11bda0b899. 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/USHM21551560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7e2d1621714ed1f814b8482fc57cb6d66a483d06090743b612ed6600b7ac56. 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/USHM21551561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c1efe55832b6baffd6631e93bf9fba94d4d1980dfef1a0d38ba08460ca3ce5. 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/USHM21551562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecfa3fbe2ebab353f6a597777f498014c999d27f68dc66230faff97b945303d. 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/USHM21551563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3220a450459c9764756fa46aa102fbfe57075863668d5065eb723fbd8258ab1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM21551569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b5b211a8f8583bfeaecfe770f3552a4e10f844f92795bfdf453d8f2e09d15a. 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/USHM21551571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece5e87541557ae2b0597efe4091d4ec67cc5b83b8930d216f9781de818cdadb. 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/USHM21551575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eb1de59fcb5e5aa35490fb681e9f7dc8ae77ea28ea9fe3c6c89fb63bf68a29. 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/USHM21730601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e8dc4187045736286e6ea34165bb5a5607d616de2a33a3d11ee7fa4066952c. 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/USHM21730603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8531435cd7832a64bd7fbdcf062039b43b2786def3dbe409210fc2fcb28169d. 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/QZMHK2050853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fc8bca405f9d9b1ce0dbfc25697bf14ee2f7dd4fbcf202d8a7d1c51ca67420. 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/USL4Q1988234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec47420b04cdac958e1bc4e28ae7a8ac2a3a554802596a16a2fb82c77572268c. 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/US3DF2480772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895b692ab788fea74602efa0c5c10ab8a670bfd0a43f00f95de779bc81090070. 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/US3DF2480793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60596fcc206dce7eb5edf4cb43ca19c346f3e34e98823fc7d53cddf315daef1. 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/US3DF2432899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce72cf4370ba12c60635c3ddf17ba02b18994addd72925c9d6ed0119375095b. 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/US3DF2432904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a2b85d4ea32d1c3e26ae4755fee83311f376e72999259e6829f38b2d66cee0. 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/QMANG2216008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97fa5b9ef7f8c17df0638b0ab548306d3755480b82bd5919ab1bce88ab41b11. 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/QMANG2216017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d322519d9d207465b45da51f6f8407f91e7327d7dd23e947e23c6a102cb18fb. 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/QMANG2216026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc0d22f506edd220b32726cfe2136f43215c0a95271803b2e8a94a31891f220. 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/USL4Q1846344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb3b8c87bef445adeb08567541f29dbfa296695906a3db9b851231e51c4bc09. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:12:59Z), 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/USL4Q1846346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ffdc5910cc80b0fbc1a64124f3e790e93c2faa6de35af08d8feeec84294c0. 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/USL4Q1846349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc4b0d171ab1df2bfdd5b3667c6b1573a7483ea6cecc3b8e5099654f372ff48. 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/USL4Q1846348.
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 0x0b60c50c805a87b076b4d9a0d53bc85b7227d7526243887b159f4c70ce56118e. 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/QZMHP2068274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b424654d5681ea64e1845ab9f9a5617d497702d3eda7095f8f34399f7f40469. 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/QZMHP2010035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5364106f19b0191516bd314954051d0aadf0cdd1758109a3324709ede26312. 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/QZMHN2058210.