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 0x1e7a1b2490aeefa30175b500dfaeccf83046bb9dba3533ffcfd8389d1e117f61. 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/f4f5b14a-eecd-4769-835c-15e5f582c244.json and https://artists.proofprofile.net/proofs/artist/f4f5b14a-eecd-4769-835c-15e5f582c244.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 0xc7d8781fd173d4c1d1967768e5b5c95c16fc3f2471077059a966c56466b9e91c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES8020600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233829e9052f428b0f262a24779199cb1b26d8f90879db979b7109f6a0cc0dfe. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:11Z), 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/ES8020600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150dab7a12024a9ca20449fbe23f850a3056f3fe034f28fb1de694a9ee8f4b07. 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/ES8020600003.
No Et Rendeixis / No Te Rindas / Ez Etsi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd16e08d5c4d8afa5edb48f100dbcea0a93dc5cc3940e68b3a116fa71aa4690. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES8020700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b26863622485709650f4e6e4873994033e19006f69fcf0c4b35103485e5c7. 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/ES8020700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b0596a0f3f3f7d4128fec761a1d29abaa9b6f3b4f6655f25b3991be3996d9. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ES8021000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c74a81a1861627828b58c0902d4db8ab248846965696e6957dc1995980264ca. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES8021000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f286025948178b256a5d6fd07cf05ff6faa710dc45569a227390a29b714904. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES8021000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238537bf422e89b5d32f7155f5e1d6abeba6bb37a5ed59362f2682a271fc704. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES8021000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c38e4cadd94da24883b08bcfba7d0851c9f3a658110da57dccc0d0e8330986. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:36Z), 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/ES8021000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4622a560b97cdbd0cf4be0c1976f7b2468f35a3b05b05977bfebf151b186961c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:23Z), 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/ES8021600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f5ae0c187da09de3d5e60f444a5a7c295c6d78a33095a584fca6d74ab9313c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:34Z), 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/ES8021600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea073a30bec67680047c1649e54db98c56e3ba0337f50fc0c2f4814c9eaf6580. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES8021600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f93af89044a34e444d1b142bb4794862bf8addcd1626b7d4132e41eefed5868. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:41:59Z), 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/ES7311800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd005206c5fa84b313dc33d0c80cbbe2913ee824d505aa7da9227fa504ffd37ef. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:28:23Z), 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/ES7311800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb631d01db93d30aefc7cfa8a35b3ecee75b2f5e0443cad7522ed3b2833bc1527. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES7311800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f93a9c0de4e3445f9bb0077d96f9245343f2e04dca66e1d1c30643740f9b71. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:42Z), 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/ES7312000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18afece6511919c6b00858697033a9094ce19b542668fb69b720500cd9c3da0f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES8021800042.
El Cel Dels Herois (feat. Ebri Knight & Kop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57112022ac95f2d14fa797d5d1bc1d8cdf1addbdf39638b22d91cb4b24e754d6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDY41653587.