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 0x3a05c3e402cb6a946e069e96d6aaa18a59b693025f1e022fb987d12dd4689f26. 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/3273d432-6f3b-4b99-ace2-99282721d56a.json and https://artists.proofprofile.net/proofs/artist/3273d432-6f3b-4b99-ace2-99282721d56a.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 0x9f746ec02207389b40316caaec2b4cfe7649d07add9449860a81d4397d30318b. 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/GBQW91700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dcabb99ae44bd8fa007b320fc01519e30d307cdb7068641201b3df5aa22c4. 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/GBQW91700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dd69196dd38498abd31a471d897ba16a0ae53450498d06001cf2a551d46aca. 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/GBQW91700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf852dbf4ac3cd9d6f79dc1679f0a64875023ca6d1f2fec4c8982e927c9fbf64c. 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/GBQW91700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b60eb024518667336af087b281becedb662bccea1c4e58aad6f7a2c9c68305. 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/GBQW91700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ac22c69db54803649b2d7565d74393762a59ded5eb8509b88a637087a2cba2. 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/GBQW91700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcee679c0a424e423f0b40f83d7530bcaabaf19abf3f7061a22f0770bcdb9b01. 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/GBQW91700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4610a5f8081ecad78e8ff768704d825cb252d69ba510d1f7f89e8e76549b146. 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/GBQW91700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecc40551c4ad92dc3099817601721221a06bf1dd854fa6018c07f6238675062. 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/GBQW91700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a793291bcbc38984dee877739a3434f76bc8725c61580410313344bf560fb35. 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/GBQW91700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82006f11e800128566a2cd61d9430d449863dfff793c49971e0e3c7b6dcf2373. 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/GBLVL1900445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79117abaf9952bd476af166411c64dc30369ba3a06fb5c7f8171bed9f785742b. 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/FRX452102935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ecbbcb7df8875d9eccfa0dd8920b8c79c476344ae88238579740a2db16cd91. 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/GBLQT1200074.