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 0x97a6e9803000adce57f15198bd9d7e86bd6e1ddc1ed23cd45c9715a7ab939667. 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/c7a4dbd7-99a3-4e7b-94df-89ab8849e9fb.json and https://artists.proofprofile.net/proofs/artist/c7a4dbd7-99a3-4e7b-94df-89ab8849e9fb.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 0xca22b16e6c828e664584f89788f3d7161ab00c7a93ca5ed11d92e7000f44ef2a. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/BEY900400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf690b28605c5b2a2247fafb33f05c0d98e95a57779662b4ea3be73948eb6f393. 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/BEY900400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5c0247d3a75af1a62ee18798d461e0c6ffcce6273b605703162effb3d930d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BEY900400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635facd2153a8e310cdba52ba24bb02f8e26296569faee07304394575c329430. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BEY900400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef58be47b73cb93d89d92bc684278e8cf14bcf861cf7dec2c9045e633215cf2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BEY900400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410675efc04b3d73a841aef803a10888b69bfdd3799a488c45f54d1f1e2b93ed. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BEY900400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b889bc85261a36bac3fabfdf8add0b29c32830a554ba0f2d0c38690be9e0d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BEY900400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf14566d6d336f9cdad1800633d1abd9451280e02cc2de99fcb442c18cdaed7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:14Z), 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/BEY900400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed329b3b561dbfa4ed82e27dd2532f92593e0483c1316f76e96cd66f67afabf. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/BEY900400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b9de3ff96ccc9351841eec5bf7efb66094609b79a93df6b35d483f039ea68. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BEY900400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3e123965b889e90115b2916804a2debab0ec10680761a12e5d42314f5228e8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:21:55Z), 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/BEY900400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de431fa82f84f42ce9d5d8a2845d6fa5519d3f6d2af4f35eb5d6e64f0e90a6e. 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/BEY900400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa8636bf50bdc17cc2c7cb23b4219c8debdcff0c36c7e8f034ba2bdf147ec7. 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/BEY900400020.