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 0x930b2ffd29640778e464ffac0ffb344cc288c8afb63e597128feedcf987815b0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9ede3d2-79f3-4611-8fc2-98abd0615c64.json and https://artists.proofprofile.net/proofs/artist/c9ede3d2-79f3-4611-8fc2-98abd0615c64.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 0x9e588975a6869507b5c50cae9f245717836468c3932dcbf0d1845c3e4dd50871. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:28:16Z), 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/QZK6L2343474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a7bc90fe06721f31ae148379dd2ed2ce81bcbbfeeded1c8f31fc83636be639. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWS2037433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900b9d88ad88f60cc4c5a263638767a109e37f7f4513d60edfcd03ea48ad0714. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWS2037438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aca563a84997f676d5072732e01cc4651d5f4f4d354bb391f1fe1912114c29e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWS2037441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc36e06248b821735b1bbef834e30d4e00ca55e142c0befb8b060c7657221962. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:54Z), 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/QZNWW2347241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e7c53adc005f0aa69b7085af3fef44345a43bfe9c76865edda54e89d06175d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:27:00Z), 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/QZNWW2347243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8a8b9d549c8e6cff7b2500e4f1227bb845c95f860ad891b966b2f3fe668e29. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:18:52Z), 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/QZMEP2385330.
15 Grandes Éxitos De Bienvenido Rodriguez En Vivo (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d73462d9e625a73fd9f76e465ed56071a886c5f4b3ac2c9dd85afc1ef5df75. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFE2383058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a8eb8725a729a54e80c2d8cea05fb5da8e165d8352f7b85720a2d769c8923b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWT2552250.