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 0x4ed2564af6415ce1c9c613e87ea7fdd9d5d4387d549afc9b83084b695d84af6e. 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/c32e9c0e-d0d0-4e5a-8fad-5b7e797acba1.json and https://artists.proofprofile.net/proofs/artist/c32e9c0e-d0d0-4e5a-8fad-5b7e797acba1.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 0x742f97fa6007109fd207763ebfeed1f5826a03dbff244f381f69469856e57cb8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:08:27Z), 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/QM4TW2171711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e39b9b11a4b106422012cc9f9f163af8533ac264eb00fc633f5d00669881f0. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QM6N22170196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f92708a822c5bf946c2e034c2e2354c9f1b0417c455435f80abb8d194c6c7b. 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/ESA011878046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ed62cc798de017a411eea936f4cb193815b518f9bb032685ef8a2f867dfd05. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMFMF2006459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e39b9b11a4b106422012cc9f9f163af8533ac264eb00fc633f5d00669881f0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:36Z), 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/QM6N22170196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cba895dba9e1c20a03b6075c0a5962b2cc0aa46fd23b5828fa176f29516315. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM6P42189989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18faa578bcf6496fb300559d33f8a5d47cc6c5cc747f8d6086feddac366497d7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QM4TX2290738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d2fcbf4f3a3c4cf5ccdd5b9e121a7628916a878ed78a10532677d38879374. 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/QMBZ92342924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446f430a53e43923f3ffe37d31bb1ab4b313be2022e3c9f28ad41ff204efe4b8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:19:35Z), 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/QMFMF2385174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd047164c2c4129bac6362db0fce4a3ac6013a4036bc92e4820fec6ec77e01. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:44Z), 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/QM4TW2480686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1187cbdebcb8ee6ba1882813a57544cc94595498f7e464dcc71ceb98bcfc733b. 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/QM4TX2499887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d840f894ff6408efefce63530228359b0c3131e1168ccb744af44405c9160. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QM6P42449328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8baa26c3f653988a85eb28a7c3cc2169ee63228d1dc02bc4f09624560c04dc. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:54:05Z), 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/QMBZ92496567.
SOY BOMB (de la película "Fin de fiesta")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e584756470885c066bce980264fac90ff053ad75c8e035627cb2b65b7c487d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM4TW2565168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fefcf51362ca93a18722038587b11673ea5df4e0cd077e8527f176d3b39eb1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:49Z), 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/QM4TX2512585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966a1f9b7240ae519926bed414754fad21daeaae0fcc4878adf07bc563b31614. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:55Z), 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/QMFME2500525.
Super H (Homenaje al Super 8 de Los Planetas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99985dd89576c6d3ecb80e3adab6e97ed448b69aa5fbb85ed3464df050a6b1ce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ2523087.