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 0xaa6be99b3aace759b7335d609856181673f1f2002f3477a73e3f6523917c4c96. 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/16974778-77a3-40ba-833b-aed5dbeeaff9.json and https://artists.proofprofile.net/proofs/artist/16974778-77a3-40ba-833b-aed5dbeeaff9.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 0x4a52fb823eb7191143e2eb833d707431eae33699aa660ff8e1fe8ad78d0facff. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEGR81813078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00f1f4fffbc79915bac4aa36293c2e327746d2adb1794447d9627666bbf77dd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEGR82015587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36d4c37392874d4dde305c0218a227d37260c8c89bd746e717c50ac3f934a8b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:59Z), 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/DEGR82116609.
Rock 'n' Roll Music (Recorded at Sun Studio, Memphis, TN)
Rock 'n' Roll Music - Recorded at Sun Studio, Memphis, TN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e124da0525f16cc0bae0dd39e6b2f10fbfe14df431f38a0b0ae8b4211dcfc4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEGR82116650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b642212bdf06608c1ee1202122115dbcc98945f7445e8bd69586bdf3ca81120. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:21Z), 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/DEGR82318624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637489cb33ac5753716660fa884aa4c98127231ae09e712fc0642b5756b272c. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:11:10Z), 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/DEGR82318625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f0f11dee53a66ffcfcb502eedac8113d3cd1782b0a79071de1bedd566c2d25. 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/DEGR82318627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6d1bc204165c78354c538a538af6a4de7e7fe43d3b7b5e3cd7c0c45fd5b472. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEGR82318629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c742539bcdbd20255e35cb308e4248e6fe7fcf2a707e2a2e912f996f9403a8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEGR82318630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0991756f465a33d3521bfdf42b6d2da311f6f3d48e706da77e2f1c15c4d9f4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:21Z), 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/DEGR82318631.