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 0xa44263d0c60918f50099743703beaff4748fdce0fe603ebaefcaf3e561220299. 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/0aa3dc12-62a2-4e3a-92f4-3de67b442730.json and https://artists.proofprofile.net/proofs/artist/0aa3dc12-62a2-4e3a-92f4-3de67b442730.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 0x46a6072c5807d2b549bcbb146b356336846d36aa43f43934172c3408e0f2352b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNC2185396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b80b1b05c3a4835aa78cc33a1cd2f9fe4465623ec07a66abe13218bf585b206. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZK6N2197430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48add6324e821c0536448dd5c28c1414fb08242d6788d031f74f64993fa5c554. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEM2177240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6018590a339692f0024ff4ddc415b0511dd7dd36298ef4dbbacb14fb33d0f1a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:50Z), 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/QZMEP2163784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639c54aa3c661a8d9d10f085fc3fd05214f47ca001f5dbcd990e317e4ffe824c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWR2133454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8f927b1ff3138d4079f3581469a9afe4352c2e5a4d98459a6529f4551f69ff. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:38:27Z), 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/QZNWX2127216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d572084d13c331a0823598144bcc3337031cbf718b4b38a39571f5e8646985e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES82294766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c07e3bf7003ced7e587dfd0daecec553ac91f545a8d5552f003d1f30905111. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZHNA2289616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e1627695cd4ada8356202170bc3fd44c2979a0b4b4c2d490b75d1dbd35ad45. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHNA2289617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695ced7d79caea97575f7bbc382557d985eeddcd1fa2778309b5819a9639ced3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:20Z), 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/QZHNA2289618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927e03f1da7d9397f4cc0be6bd67dec21bb7e2f69f9ab2a95f853ca1a42e829f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHNA2289619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b3414f556491630d748fcd37782793d7dba8168eaaf5d8b0b6782128425695. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:09Z), 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/QZK6Q2262829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe085c0341105c8ee9fe77e454876307eac1ad08d2d0873fdf16dc97df64099c0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPJ32181181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63814dc5699c636159cfc02a454d2028a6b2493b426d6a8590d578c9c06b8bd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32193044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edcb8a40e8d061b97faa8ae6a25e5b1d9cf8f4988e2491e2499457fb0ac71ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SGB502275275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4413338d131a9ae017a22aff426b4a513aa4fdff7e5d596466791dd35b8861. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM4TW2389517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332e84d22c0d1ebe1d87cb72dc268de03734a7b261912b7e48ff069ea438edec. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX202359564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cfabe5e5d726b948af41ff77f5c2cfcde5efbb1da43dda615aec7cb30cc645. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SGW502325919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ee0482b60b061ef939495f3bccd7ef9b10360cb48addaf1e04df0e8188441e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GXBAV2349002.