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 0x10a801a07767124c730562b31fd55a4c339808f61d9fe42d7d8f75592bb44a30. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23884c54-b0db-4d35-8885-f2e7b93da55e.json and https://artists.proofprofile.net/proofs/artist/23884c54-b0db-4d35-8885-f2e7b93da55e.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 0x08d6bd8df3c327edbc0a5ca8c932ea9b45580f8b82f992d5aa5e6f8f14be4d9f. 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/GBKQU2369867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75b121950ea22825b3990c5ced385aa1fdc4ff1730ac2f0fd84836b4de924a. 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/NLT2H2300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea52339dfeffb64de6533e6940e5c9a97b82ec896b07cd04cc90bd07b310ec43. 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/QM4TW2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386c7378cd07a3085ac7398bb01c42f0de0a69334b77d3c0165d81cf61941109. 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/DEMA61903680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bf6ce992d9df707025eb04916c9aa0a2e69edb5bbb8ba950fb2e0ac048e63d. 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/DES232100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abdb69ce12a71788fd3aac66c3403b7797d20c0ebcfb579f204d8d0f207c9b3. 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/DEYT72100468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ddc6d7e694c9bc235ff5627106cff51590a58207026c566d23476237c8ac8. 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/DEYT72200435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5e40b9701a0cce443a019ce2c2ef2f5e5152e2e1ac0438fff024f5df06e64. 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/DEYT72300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2361449f2f6795f8083e47db47a3351e0e6507433dc4bad58417b3c85281cd9f. 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/DEYT72400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833da6f8f0223f39b97544e0f86f2eb2995aded03d9d3595125c4be27428735a. 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/DEYT72200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d914f092b8a6ba3cc703931a79fe57bdcbfad7fb21ea9190d1379cce0f8949d. 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/DEYT72100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffe69f45f490e21ebd7b23f515927c9130afa770e29d76e02a2bdb20457f66a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEYT72200545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dabfd1c5c5f43c22ba6c5c81f5923b8006060f72dd8f0165721de536c6ba1e6. 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/DEYT72200576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3704bb7afb6c124104d30914c3ef59c050d470eed30f991ad8fb76806f9dc6c8. 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/DEYT72200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347df9a3211ec16308d655ac682f68a699c919ce7ca8dedaeeb51d114897395. 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/DEYT72300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd13e243620ebbcc6a228d3f49a73178ba6f9fe681ba1b3c98d2d0777d79d9f5. 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/DEYT72100441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62883a82d2c9b8d42c5808a70d68d5368e3c5746113e63078ea3f0b31cdb4d99. 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/DEYT72100436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b02fe054e94f1aa14f9d9b703e6aec559c0c7a26cea9cc628a655e2979c748b. 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/DEYT72300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab4810f52650da673a3847e328cd9f2b7edd6eac534b09582dcf3101751970e. 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/DEYT72300234.