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 0x29bdebed7c4995386f18e60f45a0aa432fcf3571d484642b2c06d8f205230fc3. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2d4a10e-06c2-4edd-94d3-cb87d7fcdcf2.json and https://artists.proofprofile.net/proofs/artist/b2d4a10e-06c2-4edd-94d3-cb87d7fcdcf2.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 0x79c8339559dea3f089f47f02743c8cc42633522c1ea6b82483808b80f85640bf. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPW561907633.
The Situation Is Fluid (feat. Romonosov?, Ginryu) - Tender Memories Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc198874e039973c3ac5e741b38f7de16f79d77c3dda094cf51e0fc9850547b28. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPW562102535.
The Situation Is Fluid (feat. Romonosov?, Ginryu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49e31b85084e6f8da15a9aa875892f67abc05de0fb9053df08c857d02f7707e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPW561802279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c05f7e79aeba3c51b9d33072dea180fac720a626f9ec8cea8811dddad26e63. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPW561802217.
Batti Koi Riddim (feat. 抹, 雨天決行, 司芭扶, Ginryu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a12a25fc097fe7819c63ecb10d7ed555b9c52c63d36b7c413bce034944dbb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPW561802362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b652b2d1e4626d60da1e4cddf6af2512bda362fb8df1f576d5e8674294ee9d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPW561906555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0fe81cebdf942693e4f94ba127a17de01d5d1b8d35b2b18d69992012215b59. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPW561906560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd9d1b5fa00f9c066e1491b5828f86b863d0a9a805b9cfac4e27ce49f750fc3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPW561802237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1ddd512fc93994c029f38d01920724e7c262fd25d77fa2e260552b76fe843d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPW561802355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4caa1787f678f079ee68b20aa0b8d92a4f4a724c5f5a3fead4993d69729eaea. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPW561802257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6366f83b32fd937f32feb9beb9935874b0bf84e5dfe93e9722c8fc4e78876a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPW561802261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ee9236b91c88dd3c0f0f93d21556c37eefd5e8298071b5d6e3c31e21ac9809. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPW562000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac1fdfe07ff26b88acac583d55c624fa11746361fdb80861b84929274c7f5da. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPW561802404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fc2300b1255ffde15c9e341cb1469281ea07b1251fbb71d26a2081d50c702d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPW561802340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb99f4eda19b57809cbe100e8ca13756885fba77baecec7df0015daadb6391f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPW562107366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4918ffc9899963d80be2a6ee31957aecd3619b61d309c492b58eaa94ba114367. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPW562107368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ba9670490f4d8678885e258e4827e5e6233c1a4ff5918e2cfbb080b779fec0. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/JPW562107374.
SAKURA Days (feat. Ginryu) - Shadow Moon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb19facd1afda48d64f986fa15219ef25607c0e893ab1d0683de50a2d4c1e803. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPW562004683.
THE SELECTED WORKS OF TAMAONSEN BEKKAN (Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef304bbde09d7399654a1297e5cfad2af8a812007321ba9fcfa608f92874385. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPW562109059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5834d7cfc6a980e52639dc20193ccf5c3727f57a47199261e128eb3a82106209. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPW562109063.