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 0xb6fb1686d3db9571a724e9ebd3b638d3981a708616d0ec86f29ff8d47ba08faf. 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/50c66963-fb2b-478c-bc6c-ca469532a259.json and https://artists.proofprofile.net/proofs/artist/50c66963-fb2b-478c-bc6c-ca469532a259.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 0xf373575c4181c2c9fb1ba4840d485ff3c011bf129a49e9755d44ab1af77233ce. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NL5UZ2401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a82eea8648c85190988b2988958321ab57dcd848d3bce67dec660ceb9f5ca21. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NL5UZ2402322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ba292855424a5b2122737a2ff62b0f5bf248f7aac5de948cb7ef0550299588. 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/NL5UZ2402363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534a6a146ca31777304486b27d922191d8f582dafee3abcf97a5ebb4252c10b7. 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/NL5UZ2404864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943cad3c0d44f9b51a22c0a0fbd892a0195492d1bccb3f27c197cd6cc468af6c. 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/NL5UZ2406367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b1588dc0ecd5963b74154b3e24eeffa68ad1c1890600a3111f1fc3729fb1f5. 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/NL5UZ2406368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808bf380d359db5a79e49630f49762c775a2f6b12706150d4361a0d8d6fc9c58. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/NL5UZ2406369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd03a14353c9de6ab57c58d7699c4025b77dcd203a812352c9e0e7f46d6759. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NL5UZ2406373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3bc8015d08be272c521ffd727273d1345a8ccebd4839c511238f8613b490fa. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/NL5UZ2406376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f834a85dce25520958578a44667e5d32393861cff725433158f41aa1d566d. 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/NL5UZ2504500.
Fantasy in C Minor (Violin and Piano Version)
Fantasy in C Minor - Violin and Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133bfb69e82b06b535abdf77342da7707915b423703bd1d5cc21cea7dc50b31c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL5UZ2511151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f99eee519bf02934740223c5916d9d47518c76b96891d09fa15adfc6aa4404. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NL5UZ2519879.
The Journey II - Ancient cultures and Myths
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe702fbb3253f409b3da5701c874d36d5057d9155e6ff0469200a0a935fa2cc05. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/NL5UZ2525431.