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 0x68c6c481b8f96e6996e4a1329249f57d7c5818f1b6ced3c5cdbbc8df778606a5. 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/42a28322-a7ed-4c7c-b593-6cde143cd646.json and https://artists.proofprofile.net/proofs/artist/42a28322-a7ed-4c7c-b593-6cde143cd646.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 0x9e02654d1d2c62d85aa8155d0b5941dcdfee6895cf63212d755b5e7ad3e293aa. 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/QZMHM2297862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e50efccb8d1bbcea014b4643094d8a853c81f9fe9a53ccd46b48f0a276b2ba. 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/CA6D22200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e02654d1d2c62d85aa8155d0b5941dcdfee6895cf63212d755b5e7ad3e293aa. 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/QZMHM2297862.
Lonely Nights - Oliverse & Franky Nuts Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9724a2f0e73498fbfbfdf85575b3e5ab7638fbca828cba861ff3ac4320443f45. 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/CA6D22200442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a03631a56fe0dc723dd9be5ef2dccef6db67f227532f1b41b4587df6a79bbe. 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/QZDA62447497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66e810b32b0e8b306cf4c13e541f5e7103d6c5ea1e38f8657db1babf9d5e014. 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/QZTPX2328876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ccb3d00f0c92c72d190ad59f5af733ab48b94a209fc3c6845059a60d37509a. 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/BEN582300804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa774b452dad6717344720d8e08b82c131b2fe4c19ec7359d10e618a02df204fb. 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/GBKQU2331575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe713ebe35b8a97e4de0f00d5f61b201f254b8b50208ef90b6f15f5a8eab4d293. 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/CA5KR2258944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a03a8e9098449222aec0aa82e9ca3e07453c9abd7b356cb32d516e97ac6c1f. 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/CA5KR2366484.