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 0xbefe877eb9a3f7911faf8aae9acfc2338f5831600d2b26287c27997edaf7e5ad. 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/1ef56e1e-4d27-4780-9bdb-336e6a7d6909.json and https://artists.proofprofile.net/proofs/artist/1ef56e1e-4d27-4780-9bdb-336e6a7d6909.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc886e4a58873b26fd9c1f2673be2385e469d784117797a056d60aa6ea003de64. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SE6I32113840.
Chirigota 'Salón de belleza El Tijerita' (En Vivo)
Chirigota 'Los Joaquín Pamplina, cantautor de la Plaza Mina' (Live)
Voy a ponerme este pañuelo - Pasodoble - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df60e646c7bb121d46c2da0bd499d75bb92a18aba554747ff584261ab52739d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6I32272883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b0e3b07ccb50bb48a95aedaa4d24896409f61ba7d82e00aa6211a2236bcf01. 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/SE6QE2197032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400fb4aa690f961ca8ac8f2394f1bf4fc008f1a349e34381b58b1f18818755fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE6QE2197033.
Chirigota 'Los Geogie Dann de Santa María del Mar' (Live)
Chirigota 'Los Indiana Jones de los Callejones'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1fd4dd67bfd2f528e2d421ec558c31235f02fe7d9ea85b0e240ed220ff74e0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6I32279838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2fed76574c6c65ec73981b530817a54451fadadf22df0833a93e3d82c03c90. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6HN2137630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc80e2c1b44ca72d8bf237929dedd126edcaedd6583174c636e761ad682e531d. 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/SE6HN2137634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda002adca7dcb90a2115baf2a2d71e659954a205c2f86f35a7a037a91d653ea. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6HN2137638.
Papá que se marcha el verano (Pasodoble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b17c7fc2d0a2e65f306092b31c7de64cab1039ab5db4aba8b76ab5a2943bd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:39Z), 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/SE6HN2119353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4d6f47141310755207681a518415edbd9c98c44df7394b3d828600812d5535. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6HN2119354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662dac4177e8266a144a3dc66fb54bd1f9ef0001885249b4536ceec8b3a3a578. 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/SE6HN2140921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d126d86cb092d5239a1673f1cbdc776caa957f9211f80d9aba76a07713c3eb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6XW2273200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de26879a158548d7a9cc72f2ecca1a6ec0db0ae687cecc516a6e912b604d649. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6XW2273201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66de75430df1812249db2445ade35a6df779ee078c0e3116cec709ded4ef583d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:30Z), 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/SE6XW2273204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9ac1f3b4b59cd07af1b3d276c65af4c76fb77c2a1da8800081d4b38b591195. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6XW2273208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cd2ea5b3376b67eabfc699fe41577fc600474852d6c8d99c25735b44c8cc23. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SE6XW2273209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f266aebca599d8d78cea408f3f6f152725473e175549bf27edbf9e4f9e13f3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XW2273215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90febf5b2b55589d3910d04968866a273138ca2d9cf009d5b1466d2a832f70d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6XW2273216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc4dfdc074f8bc08ef5a54339cf4ba134f89da2b6ab4a6b9ec527be1cd4875b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/SE6QE2314682.