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 0x69a9d2462324bd9ad374fb11c59c192cebae90ac4c4347b237bf0653095acf35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba6445d2-7927-4a9f-ad19-bbeed3ad047b.json and https://artists.proofprofile.net/proofs/artist/ba6445d2-7927-4a9f-ad19-bbeed3ad047b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Perdoname & No Te Quiero Amar - Versión Acústica
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 0x8209a4c7223677ff6d3406390f338ea7091c9a319426b6a476c12508732169bb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:27:32Z), 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/USCGH2123438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89c9e6553103a2693ab28082688528d1cfae95d1e4628cb1eba74140be844ec. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USDY42159023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dafff2bce80ac57508542f1269c73d1ef13f1688ae66b5832ad27a218d864d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZJG51720107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9bb69daaaa26a8ce671372f1fe72eb62bfebb88cd201d48655e567a971211b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:55Z), 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/QZNWW2158113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a727005904e22227347f8f98462d385234e2e3e07e7c029b6ba465f4b37c5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN42225198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7710afea9a1e30ccf585dd65bf829e5df2519ce12f9288f8c8d337f6419873ea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM92209253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb841f4780ff2a52bd84bb8171be6380b63074edb06c80ae8f18584a16e82c8c3. 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/USL4R2215359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa06edd1cc1502040a7e89fbecb182607b542e31453d0230eeeecd032081712. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTAW2313862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c454768b1e4c58f6f30a928c0bdb7b7b3530bf3d626cba0eb2a9902fb344a9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZEB2398098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693513f2b412cfe612c1a3f97b19f7b5a936903cf181495b6bbb47f692b797a9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFYZ2406852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411958bbd34a8fbc8266bc86a73e2964a5420951fbe53be96c8e498beebab35d. 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/QZTRX2444440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43929ddba37622dfae96d08460e9017e307fa2f4faf2ff4172e20683df684c7. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:19:49Z), 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/QZWDD2418334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a77799b9d4749687b8719672fc8d85d1fe4306662f4f90d8584afa0bea2b73. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:50:35Z), 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/QZWDD2418352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef591e4f181c23f21aed16cd37e96a5910975b28640e8354a770f182813773a7. 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/QZZ8A2412355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea0d2464e5a59bddfbd6220061458084e88e32082af2a464de69fb0219a5e26. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZZ8A2465600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9604bcb82f663ded6e36dc9cbaa93af5d0078bee73d4a493d95d5dd615fc9667. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USLZJ2599565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f7c26584eabffa1a4803995dc3d0102be0e13abcc8305a501d0e81b934f416. 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/GBWUL2597464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5b552f41a342d1ca2ca08118a6fc43a2dd23bc227daf2dc3262f1981de6ba0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZN882158238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a951086d59944d8ed7a16b19613c6d0537c9b544f8c640828bc180a9e04c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA82233276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560e31363dd520ca03d412809b93019d8ea0f0b5fc4da7e11a53f90997b78d2f. 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/QZES92485529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643af70bd9fc6ab4e4f8105554a5058cf05b6bc3a1b2640305ca5bd3ee38bae3. 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/AUMEV2463582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeff7701eaca02ae9aeaae9d223e4f8e9255218c175e26818694998474fcd96. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:41Z), 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/QZHN92171973.
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 0x948d9a6e5b2361ed9f181c07176a3015639e2311826a24a09f70eb72869670ac. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZVPL2403364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dedf0e39460cefab1114cde7a898f46af306729008bc2c970cd37fba828c637. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES62319878.