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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04746abb0148907c5d5eae4b591e6525587100b451b7e7ea39d89bd4367f7c6a. 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/f91179c6-4a61-44a9-a898-54c405ffb236.json and https://artists.proofprofile.net/proofs/artist/f91179c6-4a61-44a9-a898-54c405ffb236.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4867f540dd1c9eae054ed9b596c4c287f9fa006d9881c2ec304ceec9a540619. 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/CLUM71900711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd5b6d01b5ed0d6f4144b9373e99e0366b3e0dd381906e7410ffaa110780159. 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/CLUM71900713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e6f27d7dc94c2d34ee60d3943a811d3ba0704fb179b49a46da64d3433bdd62. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ART0G2001909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6b90a61fa7874baa4beaf9c353b3a8745180968012d8457a80df28047c37d9. 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/ART0G2001910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9afc761ab70a07c6976f0f2add0a04d63bfee41f37d7e458a130139279430. 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/ART0G2001914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b3464ef297c0a2fcd2b726098fe83ca3b4ee29a9a548bd70c913fda04cfd7b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CLBB20200280.
No Puedo Olvidar Tus Ojos - 2008 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16badb4ede2005046f6eb1267216dffc9cca03363928866785326c92b3a67c2. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CLBB20200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ba89e3e0ad8f50ce7ba8ec2fd2695bf01014bc2d4b8615c261ef96c4088c03. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/CLBB20200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccf8f88a82a69c07e95d0ff8f7d58c41be26564beed1fcf82879000dcdb9d8f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/CLBB20200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903aacae20e38b1f52bc27bd79a124b1cb3e74ce78d3dd2926f9571d3e6feed0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/CLBB20200295.
Que Nos Devuelvan La Emoción (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfde26fbcf0c684bb8a162fc01be1aaef3f94753c8c71a97590b4235a277d1ec. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ART0G2003287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc771e31538b4db63ef80504abaef3ab48c2d725e7db22699349071c099373f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ART0G2003765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc771e31538b4db63ef80504abaef3ab48c2d725e7db22699349071c099373f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ART0G2003765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f38c8e7bc7e66b8dcf561acc8e2ea76ac864e90995141247074d8f942e387b1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ART0G2003766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af1283ee4c95836e6ac07dd94e15285dc650a56ee30ed80702a5527120ad53b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ARIXB2104518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af1283ee4c95836e6ac07dd94e15285dc650a56ee30ed80702a5527120ad53b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ARIXB2104518.