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 0xedcdd5ccaac9fa2a55b889978dd20d0f807a8af8de93c960626043f2d553831e. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bca2203-e1d4-4f33-a1b2-31c0ae81e084.json and https://artists.proofprofile.net/proofs/artist/9bca2203-e1d4-4f33-a1b2-31c0ae81e084.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 0xf3a11d499acdee5de77f7f0f6e9c9c47ac56b1f34d880cf20a40ee642ae61153. 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/JPE561401343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7787c250e3b72dd905ea8b1b56fb17b0fae1cd46fc695a4c6161752d95948ae4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPE561804106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c078d43c885ca48711085d819070753b13bb5807f6b2cf38f147ca366b574a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPE561804111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bfa8b7bcfe7b51eeba4080336e9f7458d85f569bf9e8f243310914116a2efc. 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/JPE561804116.
ミライプリズム(かめりあ's "Refraction of the story" Remix) feat.megupod(GUMI) & HATSUNE MIKU
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb3ee7a80652d395e8dc9993c82fdfa5e76ba36ed772b47bec752d05fdb58b3. 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/JPE561804118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1942210de7d4e54476c61bb18d1dd3defc9b7f3a0eac98b70cd928765633d7e. 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/JPW561804249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7ceaa6f6f21930b5b4d2682af7429f648948d18caec49aca8d804506b81fc5. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/JPW561804408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94814313379cf2c35c5c02c8fdb6832c4c38679ed3841479e0849cda34194f9. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/TCJPS2243694.
Ateinrelation CHUNITHM Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86da71ad25d83328669bb510dae59c9d9dc0f481b1ccb3916e74880038451bd8. 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/JPX301607910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd89405bad63ed1d605c1f3997a64437f499ead45277425d148d39255a3bbfef. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPW561804446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5aec58927a9a023d29e04f388246f3d6ebb28ce1f0b190c395ad10b6413e3. 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/JPW561804283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb66e790124d9d7a358c69772d54c56f64b14d5bf9945f3687075bfd09b5a1b0. 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/JPW561804284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8bf2a562e13d8621064bfb0ff2d6d17302a77ef8d4775291c5c66d7eb1ba6a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPW561804414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b7757a308e7599730ee3c729a05a138f57e8322573fddecf2b72a2551013ec. 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/TCJPX2314154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c46ce6061c39e23a3c3a362e52cc2cc47e990d72b54e470c2d3750e21e49c6. 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/JPW561804268.