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 0x0d1d485755f7335fb0721a560e1bb9a5716e021f60e93cbcab069ef036922d4b. 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/bb49bbc3-41e4-4ee1-bf63-e7da3446d230.json and https://artists.proofprofile.net/proofs/artist/bb49bbc3-41e4-4ee1-bf63-e7da3446d230.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 0x1e338272059eecadfa205a43987ac54ea0586cbe467dd6420e13b3c08b2d4ecf. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/IDA182233340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1b0714295e1d04f07bc3140280707e6f4d0babff4db0e2cc80068ecf62519f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IDA882023256.
Broery Pesulima Vol. 1 (2023 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c0a3ac4e082bfa33a264097584a422a3f7f467fa6303fe4bcfad431a725365. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/IDA221093601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe67bd25b82dd929acc4a1892e31cb22fc1f5bffc2d327edcbc47ead6877404. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDA221093609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a58654de9977ac9e6969c9d19b6db6856cbb0273b840575170476c2196c60. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/IDA221093610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991d733284f82e0e4c21d70af662d23701fe915260c2bc91b0ff5f7b8d04e683. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IDA221093617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d88afa49fcea01bbaec645328f82e2fe74ceb505ecce17a1582b045f7f1c64. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IDA221093621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2e71b192a1276e0b49acd3445c06d967d1b1075cab1dcd774c9d6ddc189c72. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:37:53Z), 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/IDA182131718.