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 0xfa591a8f5df31d325cd44fffa85b4366b2c6f5f23b379fda0f9453715928bc82. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c20c150d-40c0-4598-b861-3e9207b74c58.json and https://artists.proofprofile.net/proofs/artist/c20c150d-40c0-4598-b861-3e9207b74c58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xd7c4c87b3c250e1dab5fc4378a517a14e144ea5860b92571f02be86da03e9cc7. 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/JPV751900879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb94988da2e25713c8119f6ba98786304a6c0458b16f24317cc50189d6a0b3db. 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/JPV751900895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b8d4a12965a2c82c5900291ef5ba72eaf3e4971968b60a5d0f0ec48a168efd. 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/JPV751900880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7746beea1f7c67a8dc72bc237a06a4b28b92ed6d2fb4935d68499013e87061. 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/JPV751900896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf04638be7bd7d03a8a4ae3072ef2550819d296200f920c934c7091205d1e59. 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/JPV751900881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf05400b053084d97caf7936fefa2017e05366337c886bd11af4e181f36fdf4a. 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/JPV751900897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfbd0cee31ea3789bc41b66aa7610d29898dd688ae9d4c597fe613f0952479e. 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/JPV751900882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd688efa41c78a92d41d9fdcdc2891416fa91390c03ccaf6c8392aea944139a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPV751900898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe429895cd7b7e6c400981cbe3252c0bbe28806ccda459b5c59bffc05c691b. 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/JPV751900885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9878246e7cb0699eac3005246209830aa798977f85aa239f6198d947d15b532. 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/JPV751900902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c3cda2f00cbb1987f4669f42922cbad45d90f63903b69c51ff95baeb2c54a. 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/JPV751900888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a5bd5f4646360da6de4624e02074a9dd624eff879474d13b69b8b0aaa41ab7. 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/JPV751900889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9439118e90c99077ac7fc9e8578f5231b4929413b4534a3a0de2e8c19cc2f99f. 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/JPV751900890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3245acc91500185c1fb3f0ec76e774c5044b668939acc3f5d7b4f816594323d0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:06:42Z), 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/JPV751900908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea8b34b5646da6b1f7216982d0c136f8af40ed151c7399516f3a4decf4f62d. 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/JPV751900893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a2ba0ae28c342c3032b39d6dc9046a05f8cf60de6855354920bbd32c834a4a. 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/JPV751900909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d7b3714bac8f92b5807c44abdada0484f24d47c5a6ec57ce8ae84dfefe673b. 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/JPV751900910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee389278f3b237cfb08a8706022cd2bc333b0368cb4c5b51fa44274337c3036a. 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/JPV751900911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302625ffde3d59348e7d0ef43caf916421215c82a96b675127ec5a28943295c9. 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/JPV751900900.
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 0x4c9818072b9013f5eefee67ed0b1a4a712a0eeee1c86f606993ee916ce6326c1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABB1153020.
Kaboom (How Da Beat Go) (feat. Dj Juice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb637e802c50ce0d7fcbb4a4546f62503423adc1211f9e2d379f146045d2fde09. 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/TCABB1153024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7563724ae93c77f0ce13fc82c05c4e673979eef63eb95e810b737427e17a994. 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/TCABB1153030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bdde0553a7197b86f7060def55b388a272ee90328bf1e96c2371186941b175. 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/USCGJ1902863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd43cd42bcc1b3e9af267e41ff1cb56c601d26287d926e4f7a05c00606bddbc. 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/USCGH1564612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe757afc132bc1252e2d6ba4575cafbfffa92bd711d541f131874d27bbf38b215. 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/USL4Q1842359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22249a74326555ac03b8db44f65f6cd7c00874930dd25315b0c3a92c5bc3292b. 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/SEYOK1425974.