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 0x39d0ef54feb21a055d938cb24285cd205d098af5357fbfda63a4650beca01b05. 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/3518128f-ea1b-4602-8c1f-0290e5af9e88.json and https://artists.proofprofile.net/proofs/artist/3518128f-ea1b-4602-8c1f-0290e5af9e88.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 0xebb4c0dbd5dedad69aa3bf888c07fcce8da426fde9dfc2e13705bd3115abe578. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:42Z), 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/GBLFP1422727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95357912425f52ad02e2f53a1fe130510987e08c7ecc2fa7c261f45e20a416e3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP1422728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06792a971e8e329ff8df24b393b93eb5e9f554a0f153216fa900e3c627fc505. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GMBA21484282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f32b80fbae19723da6ac2acadd3f8fc369d055d14f6da6153ba735eb23bee8c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBMA21402210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79604c2481b1c8324d6a8788f1d2fb48e739db2ef874231d53d3006be025daa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP1556148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708539b710f9a09967fa080e9e395e38350f43b64fe0594bb85abdda9a348916. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLFP1556149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627097bf7eed48e6531d56504a2c7abeedc3803346aceeccae292c0294a94eaf. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBLFP1556147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab639c91d11c7d4e1946264db32be736de1751f4f18dd50868e4e7fef3410e0. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:21:15Z), 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/GBLFP1702735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58326e5f48d0aa31bf95546d4fe739d8a16247b10f5bf163d076976281862409. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLFP1658959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccb948c91c6b0fdb8edfdc0a9f48027f167c652dab5cc5447c4ada0ed406ddc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP1658960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3d10f0a6694529e2d4b65298157870b66309281988d1c56c1e52c05d637f6a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBLFP1658962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77397d3afed256b7a3766738ca2d7f9893c7707f590c8d2b770731711d6313d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLFP1658963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387ac28a749ae417f7741264aa58355f2bf65b7f69d8c454d3cf9237358505e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW1995257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3abdfafea3326b13a4932b205518dba634850f52069a70d641a0daf4357f4fd. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM4TW1995259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152b627a73bf1b89986c02be2348d930fbcbd4a6946d3a52ad89c9a8b22de5cc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2162791.