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 0xa14b3aebd0cb9c12b7c66daa84384c1edfe2d251826ac491db916523227f6390. 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/849102a2-1e5b-4c0d-8d8c-18db16f1bf69.json and https://artists.proofprofile.net/proofs/artist/849102a2-1e5b-4c0d-8d8c-18db16f1bf69.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 0x2b6518cf8cea3e17c32d12de171231e042211c42fa75a309c5ae815063353839. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:07Z), 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/ES5951103761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bdc9caef65ad71bd5deed7d669ce48720dcf2e12c2a35fbaa6bdd8839dc533. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:30Z), 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/ES5951103765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bbfa31677cd76829fd741d3b1c416a26dbdc3251fdb4d8a7eea79c0d6e2375. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES5951103767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b8bb2990014bf513b4c485a6448ecf01ca1e444b2ec9cc0bbc639b3bb9ea01. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:57:29Z), 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/ES5951103874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f7c3487184925886cd02abea77142cfddb26f2438fdca579690daed34d7664. 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/ES5951404629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041ecf2d3cee67063187bb07b36f218db5b9eae9e250a161571dad3e09e81925. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:48Z), 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/ES5951404632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0314dec5113f7174a11151c95efddbbba4a6df52b3e38ec0302f375a41d5dc. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ES5951404636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba9cae4f3b5c920edaf97f488ab9dc37c519ab8efc1e53337367f0d6519a8cc. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ES52G1700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46c1ffbd36ef86659a3b3298c09c7dfcd75d5b9cee0f7edef8b8823e4cb958. 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/ES52G1700416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e67762139a903b73a04455deede9f43c10e154f994d7d3149b434e3fcaa297. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:02Z), 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/ES52G1700420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5c96349f1b04b08a1039b09490c464a43b2887c7f6dfc9c1a2fd6abe8b1f8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES52G1700422.
El Pop D'Antònia Font : Versions Halògenes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74aae588d2a5be3c8e3c09e8f6757cfcfa7e4312967d6170b2f83735560292f5. 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/ES5301150808.