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 0xdb5059b7a9adba4c005b5aa2c6f5260382b3c6661dc113ec3eb22df75852f05e. 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/f045f224-6667-42dd-8f42-d2bf42972eea.json and https://artists.proofprofile.net/proofs/artist/f045f224-6667-42dd-8f42-d2bf42972eea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ricardo Suntaxi y la Rumba Tres Con Sabor Andino
Rumba Tres Con Ricardo Suntaxi, Sabor Andino Vol. 2
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 0x65789ad6c1da7c558d26bf6f5f5d30bbb5fb95b4b5bf3f416805f3800ea58d26. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTLA2211703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188d4c2453880bb2f36a2ec5d61da388aa697a066edc1165e3c690b1c4e67d09. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NL8RL2461055.
Vuelve Ricardo Suntaxi y su Rumba Tres Vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe946458e4bd1782d854bb1ccd518c45e727506f3b5829e9549c92fca2b7a4b8d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTLA2278815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb710944c7696a5b17d342cb4fd226ceeeeec14503c3c96d22cb65731a06bf478. 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/QZN882244554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb194b81381fc189d795fd77aebd827bb667eaa5990a892ae55c3c92e2e11b65a. 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/US6R21357680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1131563e167240dd7b7e4fc9e0d2200453ab14c9b4d3f512f9bc3b7766cafcaa. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/US6R21357692.
Ricardo Suntaxi y Su Rumba Tres Vol. 17 El Reencuentro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf52919e8595ac056f52e95c89a35dfbcee2a9035c4c3738ec3bd94d407c2ba. 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/QZTLA2244826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebeef8de80e1387a32cfbcf6a8c8d383fda4b6b84fb277467a77ccfed3e2e82. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:48Z), 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/ESA011525049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1045db41f416f457619d845ce81272098766616eea73992e33a4ab2f8f2cc78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ESA011525041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc446567b35ce6d1403fb901f17ec106b8fded35033ccfcf02ba75886501d2c2. 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/ESA011525047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfe1e79a641192da48460b013498b6c1de82a8e414a09f3bffe53f7e99644ad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAES2004119.
El Pionero de la Música Chicha!, Vol. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd04775382959b138608322b2366ca90147b13c0be46f6816cda90de0efc08e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ESA011525039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1160c626c23138683dd5ca2f0a436fe3bb3a4a4bb6f76dc17f37e7e9f7e36844. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTL92153489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b81595a9367ecae0eeb96b8da4bc06a9c9129de44b8697a339da02671eb3ca. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZTLA2247591.