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 0xa38b61b1bf1029539ff47428115e00be1932ed230e3dfd3bfddcdea59e00ce1a. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c182e44-e5b2-4d58-8c6d-2c48d211c232.json and https://artists.proofprofile.net/proofs/artist/2c182e44-e5b2-4d58-8c6d-2c48d211c232.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chistes y Canciones de la Oficina de Manolo
De Todo un Poco:Chistes Matrimonio / Chistes Borrachito
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 0x380ef01ee79b9f8769296bdbe931516e70650c28985c7d6bef605dc4fdab13ac. 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/FR2X41558748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15e7d2d3a2206609d983e4922a525cdb44cef8d86db4fa27ea001652cedad69. 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/FR2X41558750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2575372853cbb03d3f4dd87fa109c9b06ab2e96142d307e8a687a6b2273a72. 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/FR2X41558751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c3286d5e155561a60979dc8d20c15936ca97c781136b590e8bc961be5feaec. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR2X41558752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671af8f99b8c6a32d14364c841e2c0b863b7eec420c14d883849bdba8f0dfba6. 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/FR2X41558753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4ce78c0f6cbbd309870fd470653dfad5eeca525ff63354b00d91a83ac4ddac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X41558754.
Chistes Norte / Chistes Sierra / Chistes Selva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5496bd5b606371d22fb8a718265f12b0058b400071e138fb24d8a0b4ca441dee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X41558756.
La Revancha / Ni Perdón Ni Olvido / Por Dios Que No