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 0x0465fc3cb6be3f51bdf40a3eb360e98bbfddc0d2e25c8412508e519f7e9582e4. 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/a76d8727-d887-4411-a66e-c0f958a22622.json and https://artists.proofprofile.net/proofs/artist/a76d8727-d887-4411-a66e-c0f958a22622.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 0x6d2643e37789b20a16ca338aefed5dde5e4819547ae434ef4d1a47ee26b7f32a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBAHT1324323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa835ae41dbbe24dca48fae5812c83fbd15b50df2f4ef48704062fc9e61913c31. 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/GBAHT1324324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a85651f9103f5a46601914f20dee78a8cfc7d9c449492033a10eeb5164c6d0. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GBAHT1324476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fd985cd4a9d3c798527da33a20b45aacece98c9404bf9f24018dad5c02a242. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBAHT1324478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa555b1d6bc6c88a7062bb0397bb8a9bbb8ca6816b3e5bde51600d0f28ac84b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBAHT1308101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf022f6fc9a339cf62595c1b5c3dbe6ecced26b3fb141a87b4481cad8eccc44b4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBAHT1308105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe739e96dd9049e53dacf7eac7bf474a93d4dc0a63e742af973adf94ff81bc055. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/GBAHT1308107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70028f7afb35c8f7e109f3fce51511d45e957d0aaab35c0ac7d8efa3ed74c258. 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/GBAHT1308110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730325aa390f20bb3f528323fb244726a1a4e210a8d791dff4d8a5239672411. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/ES5950401451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb34329b2621b7acf0bab9ab478645dc13de6facd27cef9a1b116899113a9c95. 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/ES5950702199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad801dfd1cd185f825e85256f45b1d1c2b428036c3bc7d4fa42d16f0f38797b1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ES5950903190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469a83da271bf319f03f3d3664ea4a1ee1d56febac91c10eba0065b40460e6d. 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/ES5950903194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0129b52531e8bb958c75d4ce15c3fee347a43e175e75c58b03930adc9faa3bc5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES5951203897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d969bc56fe610f0c31fb9b7a58e16a86f0bdec1263c7ca0b989bfd5ec63599. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ES5951203898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c3559f11eaf4594fb6cc829e6e34b57e7535f7ea62bee38e20d46ee02d67a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ES5951203899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a977577a950be3024708582b7cd938e1b841c606964380db673a57264784fb. 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/ES5951203903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8a7d5e9820cc6d621f896a7e453f61cca9f650e88f3600cb32b500705b66b8. 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/ES5951605263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195911f2d43c2ec43df3465d494446470536b8d289ae89587cdb38a6c947099e. 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/ES5951605267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33944c03a5520b1d03b93ab98b6ded5cc6ffae272b384f66f5ec4f9a6d22190f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/ES5951605274.
Si plou, ho farem al Pavelló (Live In Cincinnati)
Homes i dones del cap dret - Live In Cincinnati
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9acdef244823e0c24dce2f46a845f8ca8fce056bc9031ecf9dd203470cda5cc. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/ES55G2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac046dc234186262341b1efc0ec1ef3acc5c8b90215be11237e12767828e4b8. 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/ES55G2000016.
Tinc una bèstia a dintre meu - Live In Cincinnati
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2137aa4d3dbadf3a64bb33526e42c02f76d7b178caa1b3d08ddbacf7c54ebe5e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ES55G2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd952bc7417c98c590b7f1727c5ba17a2f7a441cacd6746151ff577944b038cf. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/ES55G2000021.
Ara que Estic Mort - Turisme Per la Memòria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e3e550dacb15f4977eeee568834df330bec82d3843affaa66923295d351f53. 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/ES17D2302179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4332265b338165d6684fae6e0e5697625bb2da1a86242f3df8d19a79c10e2652. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES6100220218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de37774a2fa8aaa6e7361a607adfacc74d4e41e1da21bf987ec1f6e23fd6b74. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ES5951605463.