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 0xe891011e21c974f11cafb58610d396bbd30e894025f593126f79ea651973367c. 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/a185c460-1b7d-4367-b0bc-5d388755aa40.json and https://artists.proofprofile.net/proofs/artist/a185c460-1b7d-4367-b0bc-5d388755aa40.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 0x1fdb5312e4d5c5e1047b0206c6a142818f2a34103a8b45649dc91d57a1faf5a8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X42241198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835a510daf09dcef18710a1eb0ec391562a19da983836d2d406319fe54c1cd22. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR2X42241199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3efdb1f6255d2b92f2e508c29bb4b152db0b181a435e0f985243fde12c693c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:06Z), 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/FR2X42241200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0448eb14c0f9a2bb2bd3d0d8d445494d58100fdd8368fa572871ce548daf06eb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR2X42241201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0993ea73cc74af258dcb6efe20d72a7c42b38465b8b85891c71e0517a4c7b1e9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR2X42241202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac5364c01de039c596a55eddc78849e5b20e8928de07bd063002883696b067. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X42241204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a397eae226484ba1c2ab9e59315365fcc077f98069de752dd9e3ffb76101dd9. 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/FR2X42241205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3547b09de4830deca632fc1274d7a5da87b38a806d6ddfdee715c3756bf5fdda. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:29Z), 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/FR2X42241206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de92473998447a971ac931eced9fcf4599a5d5d3504bfd9a2ff80720a1c473. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR2X42241207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a39eb34f69d7e113b208c9ec693b0b146e909c69e2e8b9e2ce5072e114bf2a8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR2X42241208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee178de44184ef7eda79518f0a599fb93354ec0cd3a32a3e6d2271d69ea4da7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:24:26Z), 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/FR2X42235627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a85331b3a8f570cc23a2bcc04def0a830e1a75eb627352969c64b2813e86e6b. 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/FR6V81667437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d576d42d1161e6ca456c261f0cb2a4343aa27e40f425aaa658416410b57efe0. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/FR6V81667438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822040f4527b69f9807380272b67705ea670cd8cb416ca0efa214351112467c0. 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/FR6V81667441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd172576e383985ede7ed6e295a7a0ec80d45a78a1e59c08a74a5f0eb735896e1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6V81667442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0ac0dc5a646d6e065b9fa56784e3452933a1a4d7c9ce5daf807489a8aaf92f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR6V81667444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655339d77132c60278bd1ecc00db149c74f72e482cfc42e008dd1cc338eb3730. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR6V81667445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3db95ac27e9bd80aefd91050849d0f953b6491c0f5fdc1cabeadb3616779d91. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR6V81667446.