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 0xbe65605e60420cf3eb0e54c3d4a157e1736e83f5e20a87a3e0241a0b81b5e447. 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/4ec80278-ba73-4ed7-bdaa-2a12f446eb42.json and https://artists.proofprofile.net/proofs/artist/4ec80278-ba73-4ed7-bdaa-2a12f446eb42.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 0x0fb9d0a3484846d9605b52801782e3093512910536a9814f2099092392efad41. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5701801124.
Tú Y Yo Volvemos Al Amor (Operación Triunfo 2018)
Tú Y Yo Volvemos Al Amor - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a51c57f6178d2c7ee3becfcdebc8827cbbb5246525ea1c2462cb93e91e7ec. 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/ES5701801159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674658d1f2666296a56abc6af5784bdb49ca8b4de97b98ebf0cb43767321d604. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES5701801221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4093770fa16157e3938a21533d27f3b8efbe06ea09545e03fab5f3173e19524. 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/ES31E2414159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb781aa1e774f7a62a1f4aa27d5e4a19e08f4031fa332e6abe06074526d17093a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5701800963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf3cda6eb6746b08ee3ec382bca294ea6ec627e0f3b397937480f69d64cade. 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/ES5701801139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb781aa1e774f7a62a1f4aa27d5e4a19e08f4031fa332e6abe06074526d17093a. 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/ES5701800963.
Operación Triunfo 2018 (Lo Mejor / 2ª Parte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674658d1f2666296a56abc6af5784bdb49ca8b4de97b98ebf0cb43767321d604. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5701801221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb9d0a3484846d9605b52801782e3093512910536a9814f2099092392efad41. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ES5701801124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a51c57f6178d2c7ee3becfcdebc8827cbbb5246525ea1c2462cb93e91e7ec. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ES5701801159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd52fedb5db137d1615d8deaea79123018297b541207d23c58fcbbbaed791d. 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/ES5701801009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf3cda6eb6746b08ee3ec382bca294ea6ec627e0f3b397937480f69d64cade. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5701801139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5acb072425e65e2ffa1b3e095d00930b8451d8bfc9bf9b5203a524e4d734c82. 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/ES5701801096.
OT Gala Eurovisión RTVE (Operación Triunfo 2018 / Eurovision Song Contest / Tel Aviv 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3354fe99a6c57260885c56499667bcb22eb90f980f76384f100f15bb933af4c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5701900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674658d1f2666296a56abc6af5784bdb49ca8b4de97b98ebf0cb43767321d604. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ES5701801221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd52fedb5db137d1615d8deaea79123018297b541207d23c58fcbbbaed791d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5701801009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a51c57f6178d2c7ee3becfcdebc8827cbbb5246525ea1c2462cb93e91e7ec. 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/ES5701801159.