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 0xc285720ca9e80a181a96de01cae1be312db8924fd683643d726d7b62a4b58f4d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04b200a1-2e9d-498e-baeb-193f942d70c4.json and https://artists.proofprofile.net/proofs/artist/04b200a1-2e9d-498e-baeb-193f942d70c4.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 0x23996b2c914bafd598236a08aca4a3b5f5ec09d01e2d087328436969cdaf74c7. 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/QZTAZ2427709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3391d5cff333922215861aabf8c1096ac225b809d92c183d6c9b64b546ec0df. 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/QZTAZ2427710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd490f6f98fb8cf98da148eaea220bfdcba109327eef94e5f0c60b7ca1a39da13. 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/QZTAZ2427711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a0b31dc668d3e230840ef3935d2a5bd8a97fe34a90008584b9e7c914e156bc. 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/QZTAZ2427712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b46abfb10123d4aa752c53a926a16c9aedaa358c4ea77ad6c4dcd151de2bc27. 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/QZTAZ2427713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18192ddbdffaed3a0613aa5d76c0f5d08e228154eee8cde7856edd0624300868. 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/QZTAZ2427714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e375c44ce46577155a31ba9a19e22967f8d49c98276be373da1e0808ea8df3. 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/QZTAZ2427715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95b0128a0420f03f2b879eb567fa18c9cc4dfe82e6b1b7b395bd7c6847289e6. 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/QZTAZ2427716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e43504f8a3a3359f3c33d63afdd308667344ca7d701839d70f7876dcafbb7ed. 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/QZTAZ2427717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8ae137d25b4f22b8f49b74f01f5cf326cfeabce33fadb3cc6c6b1ff05004a9. 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/QZTAZ2427718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355d67d22005fd8f764d2bdf4ba951f788b54568e236d9f6da6251dd0cd17d03. 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/QZTAZ2427719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded4450317bf2c278a1470f603d82836843aca6485ddf581aa89b160527f2757. 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/QZTAZ2427720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d7b1b19ccc3656c037c4c534219be4e74aa4eb5da9fca2e1eb69a82b917fa1. 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/QZTAZ2427721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0e9b11378b71feec22c3bfb63fce6837185dd7ef1ff8be89e8f92cf9da6491. 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/QZTAZ2427722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e5419f94f291716c70478206bdf8db52f10bf2724e3cac5b652eac0bb260d1. 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/QZTAZ2427723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792329f79c41b57f7556d95f0fa5c406047ff23a8cabde0474435370d8aa9328. 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/QZTAZ2427724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e9813a65ec17e81ac88928e695e607e86feadf80fee1e124de45b9276b62b5. 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/FRECK2400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30845629c1bcd946d40d7f4cc0a53605159afccf3d337029ceba9a824df57261. 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/FRECK2400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e789246540b6f259055edc8379414709f8cdd061850e82c63ebefe3dd7459c8. 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/FR8FB2327830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e789246540b6f259055edc8379414709f8cdd061850e82c63ebefe3dd7459c8. 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/FR8FB2327830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d39b0c54ab2cc986f0d64b6b307cf6ecac8c278524bf17005ca0dec0514b584. 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/CHA442400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e809f51739320c4d7454084faba30a0ce66a618b4c3196ab19c409d63604bf2. 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/FRECK2400550.