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 0xb67769f8491800ef1ef74c1a6da3d8de41bb41e0e25ac5b4f039fbbe0934b34c. 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/dc20dc62-9116-4aeb-a108-4098c71f9ef2.json and https://artists.proofprofile.net/proofs/artist/dc20dc62-9116-4aeb-a108-4098c71f9ef2.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 0xec15a5083d80740b331d0b77d7e9a1035db17309e16d9450fb62194f2b3ba1c2. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/IDA141801680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b65e027f05fef2894c64c5156f345fff55221fe34d92c1e208d2ac447df9436. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX872075085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092906d14c754bc79f4538195c8d53bda900f228e1892f9ee9d8435b3af89191. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRS182003203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21b4000e416668e44fc637b548cd179d53ec661a2be91280b1481a3525b2dae. 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/FRX872075081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca47ebdeb91e583a958c25060ca542b2dc5fc8c6a0cae455c6736bf66a17ca5c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX872075082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edfc0936513a5a1bab9202c535ead56f0fe66121cc1fe3ada33ee442a59ee42. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZAY42200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2ce0a8505931e3fae4522ad53b8a4fd7f2b06c1fdcc3b12c306863ad69a005. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FRX452232931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e6797050772442d86bb0fd2b1dc132ee4f4309768ce213e7b2d47f8bb8777d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAHO2346882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890426a821aeff57d86b04f590b1a343387d901ff809f0c732a9256d8210cb9b. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:19Z), 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/FR59R2451850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b23995e0bde5d42997978eeef4047d101e375b6a7331c5ca78809735f4565c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FRX202450862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd2ef19cc928cf4183c07aacade56df3b5f1f3ee94e27e31474e4b464b3126d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZYFZ2469126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dc6770aff06657bf9af84c8f76d55ba79f41540a732d6057bf480912c76722. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:41Z), 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/DGA052497252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ad29d41b0ffd94e0e17aa5cc15cd7636c7604baee92a7e798ed9beca1467ed. 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/QZWDW2501871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e5d4b015eec08019d6a137a26c6d228300ab3356f250921e87fb6aee2ec9c7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWDW2500779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7174189d09b77c6867808d4324d0cec57aadb8dc14d5654280eaf611cf88cd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX202557509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32969383507d112720ec29bc29d6dbcc7c04a8c3530947e6462e2745d17179. 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/FRX282568677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d137ce12b88ad80063b3160eb7466262e29be4115defc96f2beb058fc1566f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX762528765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a9f9a316d7ace8e9c54e4781e7878bb988a22c18b16439a543d37519c98ba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:03:25Z), 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/FRX452503572.