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 0x616f690a65a640849ae6b5995f475671f3271d119e88a181ab8a173ad333a989. 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/1745ad92-fd1b-42d1-9ce4-7be9db39ee62.json and https://artists.proofprofile.net/proofs/artist/1745ad92-fd1b-42d1-9ce4-7be9db39ee62.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 0xc93d5bc40366af1c8ff0a3ff128453642a58321df7051a05e07f5e75ed639642. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6L2138977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0761665f6812d0b1f35d8a8fb6cbb239545704d74390a12659d978cd8a2f1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:11:21Z), 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/QZNWW2149885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e0c20bc9d0dc2bca992b436ae06164085aa554bd08d3fad7d8bce095e47d3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWW2149887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16437cad982c20cc4522ac5ef008992c56e5608924c28a6dc3bdd9353de1179. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:44Z), 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/QZK6F2257802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467b1dd2c1668e7b8b9198567c5a696c30afa0eb26084425633dd1b63689f4d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAX2260414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590d1733afbd41abf137ff8c4a6a3723ff3851161f72bde77b7be74db929570c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTAX2260415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f3aab6756774f517991270cfd93b06f71fae718b67a39e81f4da66ef5ad5a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTAX2260416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc4d289c3015e0e148e6d5684bb0dda5f1f44e38f129d8ab71d9c291309ef16. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:09Z), 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/QZTAX2260417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182fc28885cf5a18292d554a050b4b131449a9fc3f8b7a829ce9611b018238b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAX2260418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b12774ff12e1156aeec472160ace332d8ac9fdca2b3ec47c18a191b35c2742. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTAX2260419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e99e48c7cbd9851957a78c3daacad75f748197879c05baed98f0d48b44728a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAX2260420.
She's a Pirate (Pirates of the Caribbean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638705df1399de60e78fb98e4f36b9c715ac09d3a4a56c69accc24d395423253. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7M2442723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46241c61e406658c19ab48b44640b11b96531947243ae3cac7b5580382c0c8d5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7M2442724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed4932f7f66ff6695dc76324ff01f8ff9a8e6bd64971ee24811eed4bbc1423. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZZ7X2482387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed4932f7f66ff6695dc76324ff01f8ff9a8e6bd64971ee24811eed4bbc1423. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ7X2482387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46241c61e406658c19ab48b44640b11b96531947243ae3cac7b5580382c0c8d5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ7M2442724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26fe8bc4a209cd9621f3b32c695af147583eaa898fdd51c447ea56314962655. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72581729.