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 0xd329c40c22bf6f6be235424e05a972d9e41b8454e2f51ff79424d8fa2fedf8f4. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7070269b-f865-4d4e-a883-0bb512750be6.json and https://artists.proofprofile.net/proofs/artist/7070269b-f865-4d4e-a883-0bb512750be6.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 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 0xeec95e3b02641f0dc388be863bd845629e8bf3fd0275a08984dbd6a926d6a323. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USE6U1100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afcfc40baef171a677f2e4bb3e21db33c9ca3985c37bf95ffb098766e3724e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USE6U1100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb490a0dd61632a2273e882fe68db7ef7c1662a1ce745eb12783a9aa870ba84. 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/USE6U1100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e70d2531cbc7f8f50a254fcf4369cb56719adb746d44ca2a45ea762d3840203. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USE6U1100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d5ab4d121464e29d0184386b5651db405ff05db691d9bec969169d8c752ef0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USE6U1100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69204137c0d2a7233d0bfed08498ae51975b11ee8a0b0c75609e9cbbd05c8463. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USE6U1100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93616bf296fa38dea58afd86a5c8c0c2cc870666a8d03209f14f96a3014d2ee. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USE6U1100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09850a899c5f75a008142fb802259b298929a41c5b022ab943624b50b4e4e3f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USE6U1100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe580de0de3f8ab06ff7d702d79179a3efcc4462d84fec63b03714c514058a1c1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USE6U1100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413fc9e240a7318baa1fbb97f24fb4be2f69cda6b5db90ff5cb7d6461fa4a7be. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USE6U1100083.
Descarga On Palmieri Themes (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f10e15cf0aa59e6dfd0dd59381825ca295b8d18a2d1fb26a58e37a3d773465. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USE6U1100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab908acb662eb15b55b1c0485df27bb031587b4037224c0e6a11e009b2471de. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBJSH1027401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7641a0781c9268df0058358e74d2b8dd481422966a460c869a4baec11c785b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJSH1027404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ad5c59c0fd3a54eb2e50149470884936886f3d4bc1983cfaedb34ffceee5bd. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/GBJSH1027409.