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 0x23b7d7a1e81aab43c74689753746372882a80b536bba6c854d358d9d038b4d74. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee2880f1-662f-4955-91f3-ff9ffe32095f.json and https://artists.proofprofile.net/proofs/artist/ee2880f1-662f-4955-91f3-ff9ffe32095f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nuevos Medios 30 Aniversario (1982-2012)
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 0x4765947a819cf85779232a3a6b08fed4265940b91611167e494c61522864ef5d. 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/ES5120000379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97c5737ecce88e21a77bdea2b111fbd12932c0982eae1d11c4ff45778186310. 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/ES5129900323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47797d13934612c5492ac53da8cf52afbe3bd5ef71dd54cf91b652df8b00c7dc. 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/ES5120200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de7efcc495b449bb2bcc44ae4ae66457029e7cd3085c307ca4aa8759b843cdb. 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/ES5120100440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2f588fbdddaf0082212be9fb3cc29ac5070d18f3bba6ca58ae837d20d04bff. 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/ES5129800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe008d7547acc6a5836fa6c58ea657760aa07befff626662823d37a7d8d4bfe30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5120100519.
Cuando la Humedad del Tajo Nos Condiciona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b99c09a571ccf5d53ac6f37812cd17e00c31cf9e082de541ecb41f054d28d6. 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/ES44A9510106.
FESTIVAL EL ÚLTIMO BUS - 10 AÑOS DE VIAJE