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 0xed21cc103010a2c19d2d5940f052368c11d091f6fcdb3d3885653aa00b1db722. 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/fb7f26c6-e983-4dfc-bb5f-5fc9ae07eb7e.json and https://artists.proofprofile.net/proofs/artist/fb7f26c6-e983-4dfc-bb5f-5fc9ae07eb7e.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 0xa7cf710261845f5e86b47decd46bca5b3bfc6a0823dc82277b291b482e341f4b. 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/TCACM1636426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a5ffea47ff6a802ce3fdfabcc84d6ca6c60aa496556fc3f2e94bf2e569be1a. 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/TCACM1636431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877e08285c59f7a87e7bdc669abc4fe7b1208b922d609fb23b42205f4170748e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:40Z), 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/TCACM1636432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe191b2c87e3fd662ab4cb31373534846e492a005edd25e63bc52fda9e2eef46b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCACM1608700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19664d1db4c5ada3eedde1f3aba29a36425f51fe1e2572c5b959f9f17d59fc0e. 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/TCACM1608765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac5ca3c413445b1c6588f55e4b6f35e0f444c2292795f5c6ff6539a59e957c5. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCACM1608767.
Sonora 5 Estrellas (En Vivo) [Teatro Caupolican 360°]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e28eb735ca619a47f93c6c4bb38270756cefac0a658633acc4833762722f3. 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/TCADU1859926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077e55ebd56ab90aae05e44ea6786982e178278e9608ef6400a10fc4326e94ae. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAEK1962853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf6ba146c1dc54759391b75c49d21a4c848abcb226baa150194d7162e806ea. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAEK1962857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aed9acee3c38e9fe8d7c67a1ecae626c8de5087143062e01ec1e27fb869556. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEK1962860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe858ac5a1d7b9faf05e3fa37cf29b2f8441e3ebffdbf8dcd9ae577ab61d7777. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:48:29Z), 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/TCAEK1962882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4055a6fb0f81e7f0b8933a54833e958b1c9edea803caa8528ff6ab79960fb21. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:50:22Z), 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/TCAEK1962883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea1396f47e954974df8f91195938ae94c76f6df14fa6e6c4e54b99cd9ff7f3e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ARIXB2204424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2832bd01057fb23a789d34a3386896530ada3585afd8053a6564e7f44ca1473b. 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/ARIXB2205172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3239ef7b5d1ff34c046fbd9d0f0b77af7b108a6e3c10a9d32dcadd24ede669. 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/QZW9L2378895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd05d4ad45005f8bbac4b327c2a8aa21745bf7cc53b07e19cb14fa2d70db7853. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2430783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dff30bce255afddd9ce681b455056b3399141e1816a1c4e37a7e633093bc7cf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZW9K2423996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ff7ac268391184a188d58ac6ac6ce9b43da1cebdf10c4f4ed21476335dcf26. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZGLS2513381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa251f4eb75474b7c7517f8214004d61ebd2d320a42438180c55b41471d25f8b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4R2136566.