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 0x4b06099750ccf1c41f989c68e9664c163556c23aebe065f007bae83eed3d9216. 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/0a4522f6-2879-41b5-9b40-c9eda82bce82.json and https://artists.proofprofile.net/proofs/artist/0a4522f6-2879-41b5-9b40-c9eda82bce82.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 0xc09b332ddd8cb92e95828aec7bf6b3a9181f24d1091d5ca3f2e5f8e2f4f2d304. 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/QZGLS2449267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa668d0dbc116c846fd0dc83116c8375744cf6f0f3656ac5619072d319c6f5922. 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/BCNWM2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2008cffb188a55cb044388ab101660a0d78e0ce78469336ac103c289594c23. 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/BCNWM2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888b37b7e720a46ad1e52cea7a4dae9d6a903edc43d116be6a18c4847fbfe1e4. 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/QZTV32416899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b788b62eaa35ed8a1d506d66cd419a539151e228a3a8f5baf1af007e371fa45. 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/QZTRX2444698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4ab75c1bc5bd0f7445f886d5b746e0f42bcebf8567f7869be7e52ea10dc667. 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/BCNWM2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e4f6d1d5e1a85b74da62c330431d40488d2cc93f5a4bac68daee0783b4edaa. 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/BCHFD2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3889e2c0d25f3219416f827b553ae00bab4f58b208f680ee46d7ca8b546897a2. 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/BKCMX2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bac281968be353b9661b525398524dcff3a7b85e9c7880910307f4b2bea36f. 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/BCNWM2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759920fb8c8dbc0b154f32d9bb1c066a749d48f98f1c522f9c9e1f743d9609ea. 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/US7VG2460968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4008f432a7a4069b80a7ec1e3de24947543019ddb625b27f8c0ac32fcc663bd. 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/QZ5FN2432737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25761c9ab4fd4059983ee1b166172bbf8a3ca581da9f6b4f54331a4b1934c8ed. 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/QZZEB2303418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed41fc036dc58b9bc6910e59feba0f04e2e872266517154470eee69c184848f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZW9K2371572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dab0cd9679033819c512a9b22126897dad622208631445b2c38baf1ddb36f74. 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/QZWV32395321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65d7a68ccac414adae8ea3854537c898c0fe7ae255734ac8660e7081c81e975. 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/QZNJZ2347429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7ec9f0667fe89d5d4874c9c919eb7cfd8767aceb3bee288d4a59881ecd6167. 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/BCNWM2100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c42f0cfca8607de86b22ac913408d3cbe9f50cf25b01d2d6257c5e9ac26f108. 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/BXTRN2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264b0c44b2869b766a9529a6180a9f483ca1a098e309f26a0ed12a21012732bc. 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/BCNWM2100068.