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 0x8c99dfba3a996ad49ff77356966465bf94b9f8fd634974977303f8977d50adb0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6641e66-959e-4c09-9914-178f58fc1674.json and https://artists.proofprofile.net/proofs/artist/c6641e66-959e-4c09-9914-178f58fc1674.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 0x4edbddc35e09bb6cd11eb31de2b0860a3bb7ebfcae8701740561cf6d0a338756. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGWX2024641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfac4cbf02af87425469346977d30f3986e3581d390e0e5e158cff93b8c12b53. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:01Z), 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/GX3Q92068004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196275f2a91409ee2e3f61add02370b2c00e5de74940dec51843a30b2453844c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:19Z), 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/GBLFP2206824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fba75675158efd9c762a07166cf776129d62fe9d839238ead456f4b4f74b459. 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/GBLFP2206817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd773f86596dc7a8de7d08abc3b594c6ccde29e56956b0aa09bd9f1362f855e1d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLFP2206818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5818d6f28e8cf4ff2ff7fb0d79a982c7df0885edbc8b044af85e976e635d644. 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/GBLFP2206820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c3e70e0146ffae2a75db460adc1b590f8041e3199aeb39c44573854bb55b68. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBLFP2206822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf3c63cd2c75b2c698f59493bbb61d91ee99f5789a031ddb9e0651c3ae011fc. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/UKXN22288285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655fb07bff52efe9d30b0e2801f2bce42d6ea7d36a3e78909b833a9458cd2e71. 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/UKXN22288288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa53b859e1b9cb402a4fb755afb6d0f33ef1138cb9de839658bcdc5c7e089ee. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:57Z), 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/UKXN22288289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe89da901fede3f84962ae8e913096c54a25dc4bb758d4156401b8d5a2b3425d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:43Z), 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/UKXN22339496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053d0b39a8f364a4d7f3811d47050bc4f5dc8c31a28c3b5e3e5d5f0c16090cbc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKXN22339490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9c3998ee310bf805fede64f5f49c94436e4f83a5b0ce32e235647352b6e005. 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/UKXN22339499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a000968b720837ca945c23b558bdc634bbb5dc0a0cd5ce0f92f80be06faafd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/UKXN22339489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f82787836f5a2969936e0da84271648d420b690a24cde5155cc19264a380fed. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:52:52Z), 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/UKXN22339494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e74eeb35b24821a6fc170b97ccbfebed3a883919ff88f8f2c270d35c0df61be. 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/UKXN22339492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb296ddaad600b87b9ec7ac91a7dafd85c87872d1565d8211e6b0551fd5b1a6e1. 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/GBLFP2480785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8285574927d7764c79857c327aaa6be4ed43bbda923c56ea4f71497f832850. 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/GX53U2313189.