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 0xead6c0b55e0d2da117991febee5f26589d9d3d96a26f93b54b1af4f60c3d2059. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bd1a778-c929-49b3-8515-5173e9c76ead.json and https://artists.proofprofile.net/proofs/artist/1bd1a778-c929-49b3-8515-5173e9c76ead.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 0x73549c535f8a53e8f3a2261b92d4cc27ea51971e924920bf598a0b4aff99f02a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USR010616617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039a6e07a046997137133448dff6f5dcf22a55744d7451a6bbfe91ff67d092bc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USR010616619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a07c11459634c959b433d5d3cca6f0dd5b48f05c3900b3ebeb297d5634a127. 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/USR010616626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e1e7e5492d7c5be14d6c6ad35aeeefffe52ce1d71c093b788a6462b7b3ff49. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/USR010616630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cdf2bfb68cbafdd2202db3dc7fb9e85be2cc54118300c4567c81284007096f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USR010616631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4399e49ba5f43efc8d3c52815280334efc3c7d30f6efd3a1db888e38ab4b8b2a. 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/USR010616635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a20da826ec1fa35cc53e120654c63ad2a1c6e6cbc5df99561e6d9bda8959d58. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USR010616640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da69b288d43a53962ae4b390b06dec991ce9ee61778765b3ed170551b0056b5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:23:05Z), 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/USR010616643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c1839cd18a0d5767b930e154c8f8bda4336a92d0c234043ddf1ed1f9207db. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:10Z), 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/USR010616645.
DUETO NOCTURNAL GRAN PREMIO MONO NUÑEZ 2014