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 0xe72db2a0cf663f18d499ff25de50bdcf6db8aba2455d3931f70b7c56afc90da2. 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/b18b8d8a-a107-4761-958c-4392f5be9011.json and https://artists.proofprofile.net/proofs/artist/b18b8d8a-a107-4761-958c-4392f5be9011.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 0x2fd94c5f60a85cbfa2967358acecba5f058e1bd94d0fd7db525b5546a6757f4f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPVI00410710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4456c1c9a21bc76dcba9669814f80c0540ce8a28fb42204b10a5647e1fb07d9a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI00410730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef8f6a807f1ab3f465f9d87d8515de4cec7f0c0ed4733765a6eb11d5fa11c39. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPVI00419910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f2ee958aa23a9956b1851a0b051c13af2b963f618a6f98e28fd58d3aa6b511. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:15Z), 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/JPVI00419900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0807c957e1c07e884aba176c94c0cb6f53f1f3317c22a62a657d5320d9e9a177. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI00419920.
WONDERFUL WORLD (Injection to UK mix) (2023 Remastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17390a9e7dd4ac1ca9da7658a5b87d98c2cc4232b1ac94fe6c02e5e43143209. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPVI00419930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fc3b12c8d39e82f23f09fd601ed2a240fb418fcf17c86da8e6033d1574bfe0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPVI00419890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebc928defb00f0fa840da829023fc76a4ab24fa241b151dc3f0d8788e859b42. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:00Z), 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/JPVI00419970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6db2a8ab47b6fd0ec7b3ea8e8304401c2a468ce0cb0c9e0fc66e0a5335f19. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00419980.
Yokan (2004 re-construct) (2023 Remastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8d3fb518b23502ab5027ce9e89adb068c63f7432d17148079217ce211ccded. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPVI00419990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41190d7921d83443852abc00b60b491325d7192b450e8d0ec2e60edc82444608. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:10:11Z), 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/JPVI00420010.
SACRIFICE (Last Confused Mix) (2023 Remastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d9d132a5bd2c5d262913a3614111205fd144fa3f76780330f19444d54e1ada. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPVI00419880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3586e6df960760029ab084b3955bb6def60110eddaf7db9d8b62010e63b0f3d6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPVI00419940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10b18d588aa3f7831ed9a9d098341b2a342b8a47945c9d185d39113f690c2a9. 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/JPVI00419960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fc3b12c8d39e82f23f09fd601ed2a240fb418fcf17c86da8e6033d1574bfe0. 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/JPVI00419890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8710e0ff33e44ffbfc73effc768ac7da68e3675cd47bd1a53c9473333a6c09d2. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/JPVI00419950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6db2a8ab47b6fd0ec7b3ea8e8304401c2a468ce0cb0c9e0fc66e0a5335f19. 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/JPVI00419980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0030c7d2fc15b90a6f1e90ce3cc7836cd64e4bee754875620b042387500463ec. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:30:06Z), 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/JPVI00420000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41190d7921d83443852abc00b60b491325d7192b450e8d0ec2e60edc82444608. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/JPVI00420010.
胎児（embryo's theatre version） (2023 Remastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c510e91a31cafe2bd2655f7ee49ef8c4ad813b0b8e91d0e7180c24a00755a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:43Z), 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/JPVI00425000.
雨音はショパンの調べ -I LIKE CHOPIN- (2023 Remastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6f6d2fb78accbabc962f0becd07b9885df44d2b6c749631aaac711f37f6f57. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI00425020.
Taiji (embryo's theatre version) (2023 Remastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c510e91a31cafe2bd2655f7ee49ef8c4ad813b0b8e91d0e7180c24a00755a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:20:42Z), 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/JPVI00425000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988c06b1800336f76b6c87275582dc9d59961a1fbcc0b37bf8a6adc722c97bcd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPVI00443590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee10e1c9a01d29dcd3fe4f32d706d0c3d98733a2d536475188c1c08a92f31a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPPO01900895.