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 0xeddf2b477efc3e9d4afc99a9461376c44d4a875dd718150d3ffe4e9d3265e03b. 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/18d52e98-5946-48c1-baf1-6f4389c434de.json and https://artists.proofprofile.net/proofs/artist/18d52e98-5946-48c1-baf1-6f4389c434de.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 0x8dd9b51471d4c1f83eba4990250efbeb99370c790fee2c20ddc7979f2fb662a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB8KE2403939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9677d255a4b08685f58fb6e4b4ae942e9b98a8b98928543c65b4a7194d850bf2. 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/QZZ8A2328946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e42df12ead11b2f5da2cae5c8ccd670027da725230cd474fdb174b1dfa12f. 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/NLQ8D2300461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9343b93b8977379777bdbf7eb47de332e914427f606915fc808553540eeb8e6b. 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/GX8LD2322285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf134573dd65034be807320bb8ae68c10b20eb9c350147af2e77efc28d8a400. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL5UG2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92324aabdd439b4e0558fdcf118c15ac04bd3fad970c754b5ca39143571ac3b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32208593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6342415278502b19757b08191679c0bc60a78532486db89fb074f7dce0d08f63. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATEK02277596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a98b95df5be40c0d3a4ba508b9d2461e5458fe8db9969345302b8ec07475dd. 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/ATEK02277079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a0d24d3799a1d32a550319b794ceb9142b2729dcaa83f84b234b1c2ccf4759. 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/QZP7F2119386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002fd33c17c003d803adfdc5f147fbb317cb188305e47dae7e1fe77d55af96bb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAWHO2022604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618202e3bd414625ce686c0a00467050f916ee5208131ffed8bfa25c749eb99. 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/NLQ8D1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c6857116a314195fbf84e1a21d0f9bc3cca452059d125a4fd9b3298ab34e72. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLQ8D1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6452ce77365a40c0993942413b3c65e8f6c67c655a2aa1ef97df923b182cfda0. 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/NLQ8D1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e870596742066b76c4cdce9518a4207a79af992bef3966e6a40acf9d6de83. 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/NLQ8D1700584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4adad20f23747283d24e5ba13e48d63f9094b1fddfa7f87a643fa733b227b0. 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/USA2P1825733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eeb27b1b6669a71f6eb55898ae5bb06ab16b64cdac0714f157279bd194d769. 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/NLQ8D1700485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5046f4a2e0070140bacfe6a4b6c25cf9d38f94dbcd906239421a2009c4438. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLQ8D1700469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebad07631e1d953cc6d59378dab1dc2ca08b668d064d4c7db7da232e74bc9ed. 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/NLQ8D1700373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a5b901fbc473b9108a55d0bccc72fce1f910f2813401ea5a7c2d437360f50e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU4051676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e87ba778a050b736c9705526d672b87ab64e53ba53750c396cf6adda88ac5c. 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/NLQ8D1700222.