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 0x6361078cb792011636315ac0b1b1740d737e7be6ef99b06615f7e8fee54423f3. 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/579ca7c4-f057-4c1e-b977-bf7b66f060ca.json and https://artists.proofprofile.net/proofs/artist/579ca7c4-f057-4c1e-b977-bf7b66f060ca.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 0x36af2e3b4f96648f95b199f81811b213320202870137b152ce0d387401e6e334. 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/FR59R1783714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c94480038bc5bd7f63300ea83974983e81035dc1948eb4c81c2784fa8da2e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FRX452001337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9521a57149060ad825e50621de3885a8c4235a79213f0417386f782ed9e040aa. 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/FRS182016613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85b627b35d1ffca863d671495d96c9306d444397bee1ed357dde65d32faa825. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FRS182016620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5938b4a690aa49ad5d1feec291ffe865b421c1149e79a122f80e410fa963e0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZW9L2388489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba6f1eec2dba32b1e2c233aa811daeecc7add506bf1dfd142453610740e554a. 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/QZW9L2388885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e5fd0ea4453569cbb9fab0b276d6961af8bf142ebe2fe64ba45731c0cb7779. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZW9L2388886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630dca4c0504f214cdbc6a051f621f0ec55e1100352f6991d96aec82b40ce8a3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZW9L2388887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cce55f9eb66ca53bed2aae5f52cf02cd1ae6f645da73d0ed1afe09666ea19a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTPX2411356.
Nada Que Te Saque (De Mi Cabeza) / Adrenalina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac07a123d0fb4b0eb7211b889be5d3b937d65a324a9c0e4536815243cd32113. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZW9K2438743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d18046c616ef3c78f586e3055cf6ec237a61c158a12c75d1b60904f2249102f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTPX2411355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac07a123d0fb4b0eb7211b889be5d3b937d65a324a9c0e4536815243cd32113. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZW9K2438743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637ef35421530d72554fffd787382529c63134c0ccfec470b16f918c4c3dedae. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BK4DA2414780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbe2f54e7921719d532e6b1c80b36797e2e91b4c71173a7e4aa4fa892a33d4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNJY2347608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbe2f54e7921719d532e6b1c80b36797e2e91b4c71173a7e4aa4fa892a33d4. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZNJY2347608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc0bca05c73c7876c744fd6a60ed627f1e53669d87bb2bbfc5addb7775678aa. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/QZNJW2354736.