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 0xf6831eb5329b7efa0aacbf361a98410b19d25eab7727c4f746062f10a4695676. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/446bdd31-31c2-4b3c-bb76-fb6180d1fd79.json and https://artists.proofprofile.net/proofs/artist/446bdd31-31c2-4b3c-bb76-fb6180d1fd79.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 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 0x74ed9c8d65d4bb14eb0218707c3342ea23731838bc3de9028d2e00cb1d6cf854. 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/GBLV62027828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9996c8cabcab592a19de297ba57f064bc1527b330606a80e10eb9c4149ea63b8. 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/GBKQU2348465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c2dd93a8785ad86b581a8c86e7893a540e6cd441dec900f58a8e96275afe8a. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR96X2578768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27566fd3ab878478f0dd6735c9483e40eae54a8968be60ec10880f335a2ea6c0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FR96X2578766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c54af31c80036088d445ea1cabcc662f59a20a0b07bea76cd2c4aa556252f5c. 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/FR96X2578769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58eca4c3a6c66edb2302e6dc2106ae2b3ec5519eef3902c4506308b1ac97f4c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR96X2578767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475918b9dfcdd4f05e65398918d3d208f9b740f44fa760f604cb29d29321faba. 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/FR96X2578770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1893478b82a04096f369160f259a1c2195d8d14887639f017b54a15f4de404. 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/FR96X2541860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71d47a208dfffedb55e24b8aa17208f891bf673b06d4536d04f54434e9dc4aa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR96X2578771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c2dd93a8785ad86b581a8c86e7893a540e6cd441dec900f58a8e96275afe8a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR96X2578768.
Verish - Nocow Make Music Great Again Mix
Verish (Nocow Make Music Great Again Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9168b39c5fb0ea9763174f01b39d031de528bbb40e521c3a94ae377008e53486. 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/FR96X2578772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c54af31c80036088d445ea1cabcc662f59a20a0b07bea76cd2c4aa556252f5c. 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/FR96X2578769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475918b9dfcdd4f05e65398918d3d208f9b740f44fa760f604cb29d29321faba. 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/FR96X2578770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1893478b82a04096f369160f259a1c2195d8d14887639f017b54a15f4de404. 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/FR96X2541860.