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 0x1dfa6b62c44970be8c4a7526ce78f55b4aa67ebe2afda9785008c146e5c25377. 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/e96d76cc-51fa-451d-ae3f-1cf0123659e5.json and https://artists.proofprofile.net/proofs/artist/e96d76cc-51fa-451d-ae3f-1cf0123659e5.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 0x5177f490897ba25fb05ea08bb8f814f26ee9f8a5f9e10dea6114b83fe36cbc16. 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/TRUM72300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe95765ede6139bb8d2bdcdfe7ea027993fe25e2de2ffc107869d77332320c19. 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/TRUM72300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dcf96dfb9ccb9a5bb81c2a5f917a073c5a660262d2c6ff278352b86cb44104. 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/TR0061800444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b43a8da832a703eca68e7b3ee42fec574b4a6b39d342e2d40127f1edc8f863. 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/TR0061800445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018aa7476f49fd07f43ca676763f0c726ef0ef4ab3202a25fe86e1c2c0e7ccf6. 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/TR0061800446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b344f491fbc1b11f399489180dad187ffb1a6c98a62fb8393dbd73750f2f337. 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/TR0061800447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c2dc71e0bf474e04d080fcabaf90c1e1af903e9906bdef07cb8a45d998f48f. 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/TR0061800449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c8414bfa896224eec13b9a1e668d71eb457b871530dbbc1c69a281917f9bc7. 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/TR0061800448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5221cb9cf1a1256c531d094c4ad483e1aa2cea9c18f5cf3e36a0099d177d482. 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/TR0061800450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d7de86e4dc6387fb1796a8e0c3579c3c2cdbba60c6d3915c11a1a88bfd903. 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/QMFME2483088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2802509c2a384b896d30166efe7efefe01ad9a5eb5ec080e9f02bdaeee89126. 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/QMFME2483125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545f8229795976bc67bd248f3ced2269b5542d7a2e42d9e6870eb7663ee70615. 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/QMFME2483118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eb1bd71096fed426be3a261730fd9f7af4a049e58d968a5e6ca04108d41ae4. 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/QMFME2483119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5498359c28be776a9752f126cebe8315aeb8e2260686c28449a45b4392a5e8af. 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/QMFME2483124.