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 0x3638f4e8eb27a7c02f21da08a479cc04210273191775cf01cd02e52495cbf62b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b0d7f0e-e622-4ae6-87c8-68fa98125b5a.json and https://artists.proofprofile.net/proofs/artist/5b0d7f0e-e622-4ae6-87c8-68fa98125b5a.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 0x0d3f7e6dfc73587b8017e1c6333eec7c7cbf12fa1627f4cb36ff5f621a37e19e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:34:53Z), 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/ES8000323401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8e514e7f5f34d20dcbbaa471946b69d12b7eee8e7cf36bcd8cc15ecd97ab5c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:46:04Z), 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/ES8000323409.
2x1: Diario de un Alma Rota / Estoy Que Muerdo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef44f213cb0a945bb4a4c664498001f8badadbcc985a20b72b7efde45d01fb. 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/ES8000630601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5e86e31570860cd45948d829593841b85e9d9b7c26b61fba73845e70069097. 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/ES8000630606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb519e8ea7fb608dbf8a3df1765a7db368632941556c1dbb70c26c103da5e1c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USDY41771480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c763fac97b47a773445fb45836f68d2390c8921e23a9fede0d0df7eb6f2ce29. 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/USDY41771482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad649c815b2fe984ca7746847bfeae23bcf04744e29b243f57945646e0b5dd. 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/ES5151300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c89cb7a78aac84cf1a8969cbf4016adfac01c9ea24a031a20a5268343b08286. 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/ES5151300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dfa3072d2e32ba64628fc2b12516438459517f298826eb6ce53416d530a808. 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/ES5151300357.
Quince Duchas de Agua Helada (En Directo en la Sala Caracol)
Cuanta Gotera - En Directo en la Sala Caracol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7481b89fbee3041711749f574b3000e977d080f5f1ccc50907244434a842045e. 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/ES5151500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0900e2e207da1ccd77c106bc05d4266f9996ea44b6b3b8fc568fa3d68f2dce. 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/ES31E2402432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ef74a15af16561781abfba53de80269510fcd9913f79781d44a312615e7127. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ES8242448901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce1a295aa623c03ad33b64d212c6c6c9444c72583fc4044d7d2a15047f0d64d. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:53:46Z), 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/ES8242441201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524bd6544fdd04004b0dd19278fd22051bd22e9026f21d77091135780883fcd. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ES8242543302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00054064cd03884317ec35a1a5d96dc9bbdca744ef5a513c672ca2c918926ce. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES8242543314.
Dueña de mis resacas - Directo en la Caracol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3826fc03d907da5b27a26c0a8b726e99fa0bff429ad6eb2d81188925d8519350. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ES8242543319.