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 0x5c44a5d7f6d5341cd82d96a33880207cc9110f2ff799f386dee804b2a9527332. 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/a25ff5cf-ee45-4828-8b44-272f74be6be5.json and https://artists.proofprofile.net/proofs/artist/a25ff5cf-ee45-4828-8b44-272f74be6be5.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 0xc8df21928d3ac83e85b57b83db2a2a7fb5adf4344458ae7d9ab92e6ce17550ba. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZDQH2253169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb466aca938166bfa6fcab85f9866172092b4ece848593c681add1cf5e0dc83ef. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/QZDQH2262420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda4089283d6b2ba25c9daa7105a0f78868751cdc67687023e50c4f5c238bd43. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDQH2262428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a0540d81ab79e7458366826beab44e3d755bee3853c16cd1ff3dd9f9df40a5. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:46Z), 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/QZDQH2358646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815b869888f55f1b9be5b70a2ce1f126f00e324c0e5fd7258bc7947b449ed14f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDQH2358647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a07e3e9c15fa5782f76e5a2790481a21516a57bc61e9171a774c07c32de6e1. 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/QZDQH2358657.
En Vivo Desde "El Parque de Mascareñas" CD 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1546522570a72d1dfc5a8699f6171f86f029101fcf3235b8e923d96b6b299302. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:40Z), 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/QZDQH2373538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebaed6753a2e2beaa16220788a189ced4d367482981866db5b33bfcdf10856. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDQH2373541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc253e357e1d38ca7c5212fcb8b6b956a637f1de68facd07a4520bbb9a68ea78. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDQH2373542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e22996d783bb2d09b3667da4b46cafb235de8c7e4971f7b3d821e06ba4a249. 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/QZDQH2420881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdea22f024e4a7e6298a5e7a8eede243a10e59852c94c7df164d1c9a1b952686. 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/QZDQH2420891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cb382cc7eb7b108786740f91fcda7813b83a9477339b5fc82ca4d4dae749bc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDQH2431580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf9f7cd314d40335834a95ccb6ab30e63f9de24f8ce6388e31eb08346ea484. 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/QZZ7T2404954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33c6ea361783fe97b2eb544b2b259c5bde870ce02ffbb471d6a83482d0d1e00. 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/QZDQH2500961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7148a3c36f7b21a5b728b038d3ee9829479e46b5b3860602ef322e18ae954f73. 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/QZDQH2501820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2878954fff49d7efc24869f64f6c7c4a8a065f19c305a77260c518bd31692edf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDQH2504672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32bd2417ca1afa0bf21c8a3bb21622878aff972464a6003c36cac933f7515ef. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ARC572502972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ddfca994e49905208b322d323ce44f4c4feedb5d62e6e28e36e0d338e6a835. 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/ARC572502951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808ea61fee45bd9563ec5f387d8cdd766e94b07ed90653da3c26400c2c33e89f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ARC572503174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88669c7fda466c071e252f31aff3f7bdd1a3e6f92ac2ae98727758960c5ca167. 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/ARC572503762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f7c9a67c623c67648f0738c2363c9c4bb302b53e0fb11ec31f47aa4ac9a88f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT3F32595749.