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 0x897423201fb60c17b48ae6fa21809f0360fd3b8b7ffb715f14cd099919c39de1. 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/d7f2e142-b9d3-455d-acd3-c5b98505a788.json and https://artists.proofprofile.net/proofs/artist/d7f2e142-b9d3-455d-acd3-c5b98505a788.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 0x295fbba1bf3e1264778bd2514a05f302ccefad89a8a66dfdeb0189ba984c7ec6. 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/JPH492301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb805a1689f9e334d0fd38299a13d6b110e270925525011c60d50e67606c8b9de. 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/JPH492201138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a39667dab88c523395e9e9d9ad35ed62bd343915b087ddd08f07aba7b06c1. 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/JPH492201091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68b81d268a056a863ef00057ac996b2f851a149b802d36ff70895479d8e675. 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/JPH492101135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3f6edd87cd41184ebe493877f8051ae3bcd4edcea2454a0e19c6978d55d67b. 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/JPH492001182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1122c5488e3dcd31b8f91e69aea67838eea87a712c74151b8f6a3b2affb2ff56. 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/JPH492001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0959ae22ebbdd8c3bca82babc800edeeb3cf6a9d289acc5e21bbaa8b3dd5acb7. 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/JPH492001059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49a5340fc06986561d331838bd853e7f762d9ab80d0d9d7c6482ecbf643434b. 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/JPH491901188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa4f2b02b936d1e58ae812093637a60348e20873ff8cb5274288df6d2967f7. 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/JPH372100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6410a34bbfdf3b97924cbedec7c3bb470187d4eb46a0a961871f9dad983ebde. 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/JPH372100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff74e52ea938cd5f2c5d848fdfa2f99ff947d8a24c627f7cf317cf788790d0b. 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/JPH372100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a19a09a3b193224dc5c08142d556755743e99f16c50dd67bf631605f88013c2. 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/JPH372100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf984146ba3b761fcd939ae0efc54f4ef00387175ea438b73addc113df678d33. 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/JPH372100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e1a777dcd8fd2246b5909f47570a77b70daf9197e44564ecd02e2d08f4fc3. 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/JPH372100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cbea3ea1fab643770abb8c857302c456028219e59fbd55350727030210294d. 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/JPH492001089.