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 0x2d55429fe5ced22918fe89d3ddb86e1b103cf4329ab79c66c27bd4bff6a3e90b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a429044f-4aed-4b0d-ac2a-8f5cfb437f03.json and https://artists.proofprofile.net/proofs/artist/a429044f-4aed-4b0d-ac2a-8f5cfb437f03.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 0xd2c8b5467461b0b5b8196d05ac07c340530c68df61d97872c6b9be77ccfbd5b3. 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/CAT240501219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72cecb0e08ee4b48d8773fb9dae31f8a53b510a8fbbe71039695136c534e48a. 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/USCGH0598246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f4ef9cf3d06645cef9a3e0acba091285b43ee2bca426a93254bbd3b3f76757. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USCGH0598253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f971d9c98e1c6e74ed5de8e18ce18d960717751b2d429fdc1228add1ffb28b. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USCGH0598254.
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
Techno Cat - Dance Like Your Dad Short Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1dfb2a2e08b153b109a1cbf577704b66b8b4ee99c68c6f0a35f5df95034838. 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/GBBKW9500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1cb91e3b075563e577e9c89870e3d84936f77f52c50ec0e839abc7888f3d2. 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/GBBKW9500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbe3eae03aefc053b4915102cd87f14a68f89dddbd102ce818a87422f426312. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBKW9500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a0509476a4aeea67e79c808a66305af83cc3d88feae2a829ee471dbeeb336. 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/GBBKW9500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aac066e9e6ac62403ebfdad68567dbf0bf975936f8760eea042ada542be2a7. 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/GBBKW9500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea6b83227a0f38a1ca988af2eee7a0c348591baba85bdbe9116199dd5b06ff4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBBKW9500012.
Clubscene Records - The Anthems (21 Years, Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ee01d2f829571a2144a7079e2bb21afd05bcfabaaccb8206d51ff9bd33951d. 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/AUXN21413671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d655e32b2394ccc9d9429d55fc9dc74fabdf04ca40988e66113a04e04334b79. 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/DEN062300040.
While My Guitar Gently Weeps (Live) [feat. Bianca Kinane, Bob Henrit, Bob Skeat & Tom Wilson]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f2f6bf13aa3d06144e548a0ef45c071776ca50c02dfbbc95d0bfb76394f8ad. 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/GBSLW1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a0509476a4aeea67e79c808a66305af83cc3d88feae2a829ee471dbeeb336. 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/GBBKW9500008.
The SpongeBob SquarePants Movie-Music From The Movie and More
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8544eee367f56eec7b47aec898067b02e3416a8746bb85d2e373057d4dbc50a. 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/USWB10403630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b12657e9484ae6699c80ab0f0431674bc80d97c7e557c8eb9770e40994133. 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/AUXN21413666.