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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b47e9cc99d43f18324f0b960722431120283c06221457f28864f53f9d9fb8d7. 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/d33a60c0-dca3-43f9-80c9-c53902c2f4a5.json and https://artists.proofprofile.net/proofs/artist/d33a60c0-dca3-43f9-80c9-c53902c2f4a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hepsi Kafamda (Avcio & kahadirbartal Remix)
Hepsi Kafamda - Avcio & kahadirbartal Remix
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a5215970b3e72a59ba6b66ccce1edcb653a919575c0ace71b01da7b3fe008. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QMFME2166701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69606edafaf64f6b59a5f52854fb899655fe3acab0d5b9dee8785344c2d67773. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZMEQ2192980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c67b6b058b5fab43ccdcb545c91a3de7037acb161e70f4c34f04f5600e296ae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMER2192548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a7154f639aea2375f8d65ba5c9d4fb7c5ad68b5cadbdc8b7ceb40fc9e9ec6a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZMER2192550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1b1a71af36a93de8e0be5e5c345032b95e7e65226bd5a6f9f815cd3f465e86. 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/QZMER2192551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23d30c60e546f8508e7cf91553c51d1e1591c78c39fbfddce4b3d49738ac393. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMER2192553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583103508b91f18073c3661fb0109eb4ea076aae76f11bf6d62aec886e864c4d. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QM6MZ2337317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b055cda504b8ebb8059e7470e2f70ae67d16159f24de524ce1432710599fa4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMBZ92314935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be31b3ba2625c10bdfb704f367b705c0fcabc40cceadadce48fb01cbd72bb11. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QMBZ92376231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b481ba124ca7ba6de30dd3ff4b02018bfa5ec8398c6bbbd78f63ea900dd40f8. 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/QM4TW2471512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2809790278aa5d7582ae4a8234e3311eb132a912ef33cddf402efce76e75dcbd. 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/TRCCB2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3272257ce550d7564b355ae60225294fd10fbc5f071b5f8611e203e47fef4870. 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/TRCBB2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc445866335b49c307555d0d6da6091157ce3ac5631dec2d87c8aadd36ef76ce. 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/TRCBB2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7084fb8669dbb5545cb5727fc830265d4895499615d3c153028a5e86539f451b. 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/TR4152500012.