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 0x371497c4077ae059a84a6c44d476ab018f6e3005003bb0dc4980f894ea2cda7d. 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/2fc07f2a-9087-4d0d-be9a-9e9bbef5398f.json and https://artists.proofprofile.net/proofs/artist/2fc07f2a-9087-4d0d-be9a-9e9bbef5398f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classical Piano Best Of: 9 Most Famous Classical & Modern Piano Masterpieces
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 0x92657dd5896d44c1a36088b2a7310771136d4b5bf8004f7c7824752b62c1c84b. 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/USMH92373594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53908dc543c9490f70dc3b0b87f887f78adc5bc31a1bd64d6b31be52f483938a. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USMH92373595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246780f230c28edcfcc16b55e15deb05a9d6b82651f4cd76e63b4570c033dd88. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZXLZ2377638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a1a84177c3f2b053d147a091dfc6a8eb90ca7e94ca2485600d6910d966d6a9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2301857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005885a7352895c3beebaaf73a70ac1de7b32bf59e2b637f558d822b3129f3ab. 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/AUGBT2301859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3349d82c077fff301caef8b0459e1b387ab492b5727f59eaf2acd3f0cf4610. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2301861.
A little pain (From "Nana" Anime) [Slowed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f254ad85a31bfa359ea1c050aed25356184524831c183ede3205eccc254662b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXBLP2401990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76b2f1866a93a1c2a6794233996ed21b9a32b3405b9cff8d78c78936e92ac7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXBLP2401559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20864d8a52a3b911b4e8d822c053b966fc78cf303588ae3feb4bbec6db0f44ac. 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/GXBLP2401590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40640a07b5de64563a780dd230096d4f3aa3c0208d8dc465d434f32dae7dd192. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZVEM1835010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf165099fcd7458d4d86679fe8e930737813c2c47663cccb1e452ef3ee9194208. 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/USX9P2470481.
Le Froid de l'Hiver : Murmures de mon cœur et ma musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375dfa7b5c4dedd43ddf35657a21e37c035d36544934ba1629ff4b247b85c748. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/GXBLP2501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93605fc51010427296c531185be5ecbf7d2d204e40f6326062ea9713dbe1ab39. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:17:57Z), 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/GXBLP2501264.