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 0x245017e368ed4d00aaab45b3d21daa5e838f43ac39655fef549c8fc6abe481dc. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/907ac11a-8ed1-4c0d-9c73-7bad97b1feac.json and https://artists.proofprofile.net/proofs/artist/907ac11a-8ed1-4c0d-9c73-7bad97b1feac.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 0x5485b7746738889b1e36d9a0db95c5857e5548948c90c25ae7f0b52f24f9f40f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPR751401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0645ba84e3e01a3274b9b2fe2e225fe95b6802b08a5b9c3410b0878d1ed4b9db. 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/JPR751401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4757923fec646b3d7bbccd1b6efed2be50ebf40787afbcacc7c1944fafb05f. 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/JPR751401396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485b7746738889b1e36d9a0db95c5857e5548948c90c25ae7f0b52f24f9f40f. 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/JPR751401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0645ba84e3e01a3274b9b2fe2e225fe95b6802b08a5b9c3410b0878d1ed4b9db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPR751401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4757923fec646b3d7bbccd1b6efed2be50ebf40787afbcacc7c1944fafb05f. 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/JPR751401396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a5e55ad5904a257cbbdf01ec3fc409b231de9ad026bbf094311b6dc8c6306. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:42:22Z), 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/JPR751700130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3b8401a6c6e23624b63f72b6fb4f3269d475e7c1c986e99d7cd93e43c149e6. 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/JPR752000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc007aeea857f8034510b30f8306c2b0f4ad924c507990b8384a9b002775ee825. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPR752000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3b8401a6c6e23624b63f72b6fb4f3269d475e7c1c986e99d7cd93e43c149e6. 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/JPR752000280.