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 0x6698e26c2b218914e5aca1c4d67fb532bf034cf38e5e849a930ab148ec560bbc. 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/dd067cf0-d34e-4f14-a668-f37f1505bf57.json and https://artists.proofprofile.net/proofs/artist/dd067cf0-d34e-4f14-a668-f37f1505bf57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rhythm Shadows: The Soulful Voyage of Jazzy Samba
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 0xff466e207e948690e450fc56bebbcf624d3d5d59f52cf5b8dc6beea4c89ac86a. 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/PL8D72469717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f994913372518d732c9d0bcc7a574cdfff2e7459c5c186496cba55c4317123a. 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/PL8D72469718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f951f4818b5ae6c78028cb36fbf156276c64aaa32cc842289dc350263dfc0b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/PL8D72451434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016194cbd90d55301bb0dd1aee0cb8ed5eabdcad1f79d656dc968dee752552a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/PL8D72451435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7ef4fb166efcdf66b4aa0904a5caca4362fbb2cf4d6c697d61da744d531009. 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/PL8D72451436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26807078073286e668db86183e6d691a4bbb2b751fde21c8a694705c7f5347bc. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/PL8D72451437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecfaf5de07d6394ca5de22ed4a9b98ecb39bc6d766702ef497cac52c73b7880. 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/PL8D72451438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7b043ecca28675edc5591ba8ac0dc26c5daa0c8dbcca5bcd72b2d9dadd76be. 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/PL8D72451439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a7c456693100d03c7d70ac09e9693e889ff117521c417af744d8a93a120ccd. 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/PL8D72451440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6934a9e9811460f670adcfe02f592f2fb9674ca5d29298d9bcc06bae5ae114a7. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/PL8D72451441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d0759c1aa869f96de7b9141164b6518edb41c08943758dafb859f0f746f53a. 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/PL8D72451442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb79c27954a83b95409d3fc30e112bd6844c9ec43e37848b46ccbacf744c5d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PL8D72451444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e68e9a5a46aa848918e3452cba980352283c1ae2053886112eb9db1778a62. 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/PL8D72451445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fdf12dc52830fc45b1af24b8be4d72b0661bd27dcc9cdc7238d970d55fc523. 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/PL8D72451410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87300e6bfb7fcf2668d4fc5c90cd9743bfc352e0c797624075be742b91308123. 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/PL8D72451412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b147e02c6afb83c0b88487a49bd6ab601a4105541a80683a49d6567ae1c8d57. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PL8D72451416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc77aa79d27275936787cf0d1932e45a38ddf0dccda5efeb98ea88aea714a3bd. 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/PL8D72475123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b216a707a1860bb59b76cce5d0f4157d1bf1fb9fec15aa1d4af641645ce728f. 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/PL8D72475081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083a790ea62195efaa78311c911b11b6f6a5cbce3b357f9e8f76df9f2414d817. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/PL8D72475082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df4a403b02d5c5d52082e47b1a91ce319252464b16c684a000aeab5d2adcbcb. 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/PL8D72475085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3c558ee935b68f1115673b9d3598a9e817c9562b73bf36c05f24e38a0b1f30. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/PL8D72475089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76981e4a7f15d58d7a534b1ecf5e659db56e2242cf0764172ceb360f502d94e. 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/PL8D72475098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ebb50ceeaf593f127e3985ea41f86c90e77d351aea711e44ed9985bf75fc94. 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/PL8D72462033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb8f2af30db1739289e6cbe1ea5b33ab9c4dfdfd76624a23a63d2b7a251ec2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PL8D72462234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0129cc76878c5e7a5ee7f23de3f461672b61523ce2bd80277d7076302b70a333. 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/PL8D72462236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5627aa0d9ccbb8073b4c96bb8f0a19d5b4f31d51bd182a5c64297b00e854acd3. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/PL8D72462199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69adc56b752c45c5bf2ad3a5995c4a4fa377aa4e692c045c9f57020218d005db. 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/PL8D72462200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae4dfe981c7889c1568ae8fe4d34634e54d92c5562609457102e13383bc161c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/PL8D72462201.