thumb|Chocolate bars in dark, white, and milk variants (top to bottom). Chocolate is a food made from roasted and ground cocoa beans that can be a liquid, solid, or paste, either by itself or to flavo
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 0xbee59d32440184ecc206fb05e4b405a007bfab5064b9778e8ada128aedd9e991. 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/25b208c5-cdb2-41db-9d74-3dbb1e9b15ea.json and https://artists.proofprofile.net/proofs/artist/25b208c5-cdb2-41db-9d74-3dbb1e9b15ea.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 0xb87d00d6c19330ee04094b83cdeb968c0d7137a950da2f78ddbb95de9512c128. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UYM120000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392d1df20face4db44e9a14e9711abb912310ddac901d3ab4581ae8ace281408. 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/UYM120000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629dcbcd28fa0acc3cdf74894fff414697c71ad18e4a3123ab1e893080786fac. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UYM120000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95186ec6cb272e444697fe25c29fa11de7b04e042b2804927b341b07c1ddfc9. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/UYM120000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48944fbb2ee5283d6b98a967e3cb0d1643c51cd873dd35d87d8d083d81e1de3f. 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/UYM120000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfa6b466f9f7e12455fd69c9cd6ad7aaf800376c28c46a2e5ef447476687b30. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/UYM120100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb6388ccf02c3694047e2b9aed62d871ef4d7cd57243af97540702ee7532e48. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/UYB141612102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f303c561029385d06bfeb2c5a1ee9d34086096d3fcdc312bce3ca3448a17bc. 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/UYB141612103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64026375a584a5fd811bcd31106d1f583c166eeb3b55174e7441af529039346. 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/UYB141612203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c3bd235f3f5be354c68c001c9262be8a7817e949059d9e111dfa9945c39ebe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:03Z), 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/UYB141612212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b85ec08f997c396e499346196b0fc418b3b4e3ba97d88b7baef7aecf74da80. 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/UYM120100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d13369b5605663f9582718bdead792fd54be1f1d1735a5967ba48d899e658. 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/UYM120001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae7c102bdd1cc36bad676973457b937fd60204b18c01832c4480ba03e7c5078. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UYM121903581.
Mayonesa Chocolate Mix Enganchados: Loreley / Arriba Malena / No Me Metas la Mula / Plena Chocolatera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2538941460b825a98cac587d673a62e846bef406c9ca68d2404d1514766ff1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/UYM122003091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12a77582f31a9d852c41cb2da4f6e6c9e938fc3c3d770888eede7fdad8f7ec3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARG991039789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1764468e4c574c34d2d9da78f7ad46e7a05c6f939b254252d7ece619d8c12a72. 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/UYM120802625.