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 0xd8f61cb0260de95244d712b611e97930bcf4473734292363f91d8039c90cece6. 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/a27d2bc8-943d-45d1-aa2c-b50880d7fb27.json and https://artists.proofprofile.net/proofs/artist/a27d2bc8-943d-45d1-aa2c-b50880d7fb27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Junior en Vivo Septiembre 2006 (En Vivo)
Bonita / Que Locura Fue Enamorarme de Ti / Basta de Sufrir
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 0x999fd26e62781d26366736fe135eaab4c9be409e2d479dc953c6e3a3c7a4de8e. 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/ARG991019517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294d2c6b348788f924ee3292ba9f75d052649375dd41b9f9331e8eb4639c910a. 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/ARG991019518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edbd4703844abdf294a1b3e3a3655d0d9405926d062b8949462fe09b6085ef0. 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/ARG991019519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb286d3d6f565018fafab9d9b89216a5b766719110db05cba7fd0880c8ae0be. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ARG991019521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9db34e759abf383731d2d6aff38303586e21c89df955039b3acc64e33f3c8f. 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/ARG991019523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a583030eb897249c9e29b0538652440cd914fc2b2a8e727c7a92a24f0d0b7b. 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/ARG991019524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885182b151ad4f03c498c9069a9703987faae8533e43dcf51956325767041adc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARG991046231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14d7148c5777e96ffa457e5d37634d2ee16fee393086d4500e7efed9ef8aff0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ARG991046232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d469cff6f2dd5d615d5cd5514945b7bba2ca96e7a44150076e9d126be8c6f12. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ARG991046233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa43c185fe02a46a16db52ff6d08281a952241b2c35808eee63d357aa69490b3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARG991046234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93543cf2196febe71d980d18e210fd68b25d6a87211f773367dae17c75d3ff3. 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/ARG991046235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac245fdf79d4c3680f31122840657697044e325d70717203abe12d0a58efe8c. 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/ARG991046236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14287d029dd569839dda9a50570379e79089a3111bb6d582d3a6876d7cc2103a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARG991046237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad4ba8351ed047a20e499adcfaae943d331ad681b2b683f20d4731045831a33. 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/ARG991046238.