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 0x43ea33bfc3fdd620382ef4910d4fd734d01109b9573959ce9f0b81663e9feb00. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3481755-1340-423b-9388-5390df312764.json and https://artists.proofprofile.net/proofs/artist/a3481755-1340-423b-9388-5390df312764.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 0x57483b874761ec746122b49ae5fabce2b0f60898d70517dc5b34bfcbe0bc622a. 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/QZFYZ2138450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bcb96e1fc73ae144ba0711b9e6d3a3593bf133dd0b3a59d8ed85077a3ab12f. 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/INS182401534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ebaa014dc1898d949ab08cffd519bf765da6606226889ddf467908ac7dd9b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INS182401532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80198edddd523cc5570eb75737e7f5cd1c6e240fb74e04b85fca68a984b72872. 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/INS182401530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c875b0ee7ef6ba52d6fa8469ee5fefa678af2409a7c5841afeb9bf7312f84. 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/INS182401531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1339cf8819c8a1ad749bb363681c6ff0ec8c656d5302c796b732092becbd676. 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/INS182401533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4edc15fa7508b19b91efae0c20c72f2fea4ac678cb211f37d47ac8dbe217f8. 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/INS182400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e2fb296c52e7aa6d0040760195ae088d2418bf52765fda3ce50572b062dbd0. 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/INSK92400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4edc15fa7508b19b91efae0c20c72f2fea4ac678cb211f37d47ac8dbe217f8. 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/INS182400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950cab2f8df8250e5be3636ccbde429035754cd1e69f2bb3c4f7ce60b1bfe8f9. 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/INSK92300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80938aebb043d9c8297d6a3b6c0867ccc8f2487f424cf049874bed9a1cca9d46. 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/INUM72302879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d5ae6ab87f3126477449bce2ea3581d4cedbc8b8e0d4cdfecf80d6a93817b. 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/INUM72300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf628eb608539d40943cba54295fb3be425a082f837850fd915d8c63590175266. 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/INUM72200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde73c5b47d8b6832d8920079f00411a62c3e0e71289a3b5ab7ac6082ab3438. 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/TCAGI2297217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2223c8fe037d898c3b26551aa6e7c02039d9737e263041f2a971cafabdeaf. 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/USA2P2222664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615a8a0befab1f0bf416219f2405f88a8b526853ca35e8fe84be51f6cce65e62. 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/QM6MZ2223640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2349cee404f40e4fbff278080cb1f58bebef36ce4bece76821bba9cc125bc8. 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/GBKPL2292426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007a5dd29ef1cfab23cc34aae67a5d61e87784c0b6da91a450246349b41d3a38. 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/INF252210002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7095ad946739dda6914965927c66e8ccb83abeb942dace67a1a58bd4431b7499. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S2266620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455321d058d9ec04d9fbeae335eb3dfbe48304df7e37c78ede50383203622c5c. 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/FRX762198824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a9cdfc9ae9465dd5d5194aa582f5656072c76e5004fa8f7319e7c50887c6f7. 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/QZK6L2198362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b64d0d7560f3f0aa11bb157168fc463117e4594cbefc47ad88da057967e2cb. 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/QZDA62181747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb03b0d4065a7d06060a345516bd5a5817cc3264713792de142c90567dee0a6c. 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/QZNWQ2056667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae7106aad0c60a52f0b829bfae22bead58f33036124002f384adbcedf48acde. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR10S2066766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56d28d30c8e41ef91939babb38f84ecc70d697f0699c56051246dac8e19afb. 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/QZK6Q1912931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc99b5c080cd425bd8e5692b3174bd9a63e0798f9b0b79fdac890e7a0823513. 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/QZHN61991791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f27b3020f1d2da3f045033de0f9a6945f1c7e361f782e0636b36706ad3dc87. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ71907367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25295c10c8c0a07fe7efdc138b77358904cf9849f78f6ef1408eab732ce7c65f. 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/QZFYW1974866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1038a93cf2e5f2ef219d2cb9c00acfa285a3068d88b15ae0fc781820cac0811. 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/QZES81923308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7cfd0d2f9a5e2ddf116fb984e14a4e0b9a25ed8b18a7cbf6e2ac45040ccd6f. 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/QZDA81920151.