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 0x39a03f00cbbd9b7d4229117a46debbd18011a514c959484ac689bf7343c1897c. 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/50838025-b739-4558-8e89-a1a12449c6c9.json and https://artists.proofprofile.net/proofs/artist/50838025-b739-4558-8e89-a1a12449c6c9.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 0x1e08fdbf360c54f1a055d5633b18bbe7d6ea34c1096a97c3424e91215304f13e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPBV00200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8e84475f54075611c84aa0a91592dd7f33a1c91560ce7b26f98baf799bfb9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPBV00200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6dfd2efb3c92b448f1b54fc06d583f3e757264d7ecb212c2bb02df7e065326. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPBV00200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0521dee39cc3d93e673b6fd5d6133869477917c42fe80cfb6e5345aa7d8410. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPBV00200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e0c23532bf770b1d944357a7617f0d6ce7ba880d102dcd3f97388a564ef265. 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/JPBV00200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc09c937114cba758039155352ec89e7c89d17893fd7dc213b2e1c8e7236082d. 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/JPBV00300145.
Beautiful Thing 〜Original Version〜 - Original Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee1ebdcaf0e649ade0f2ef2718b930b2b4bb7e746234a9900b72b37f6acb708. 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/JPBV00200467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22419ead76bd5d7e06c5837bcf11518c325f628b073c941cca494cb966ef29a. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/JPBV00400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453309481d159af8f08779476da6d0c9e5fdcc6090d906f97388131874c5bcee. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JPBV00500455.
やわらかな夜 〜WALTZ FOR &'S REMIX〜 - WALTZ FOR &'S REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127125b14c948697ab8f973197603430ce862c0e4bc768b13c38a8ead4aea6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPA630200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc18d9517d477758cc865cd8ced2f497a517c8a34ab90e929eccdf669304e3f6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPBV00700785.
10th Anniversary Best Album SUN & MOON （Another Edition）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9565c41fefe2509b8a85ec6652f4f442837067320aa82576a9c2154d2a28c3b. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPBV00700448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bf01241a507c2a0149d05d6ed113667a7dd80a8c25201b8db06fa67420913b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPBV00820061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9abdbd7f24bfd96b535cc3be59c5db1c9d06bf38a94ddb0c7ae5f261c8eabd. 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/JPBV00200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d331f5226ef8c9f356bf47a79e9e9f4c87e58ec1cf4ad30c88b4743c3a0abd. 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/JPBV00820062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d51bd38bb22da10f3afde8bc08b97b490239d439ad25cb42efb91f8279c0a3. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/JPBV00800666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d9ca7998dce6b81b2ce5cfb340e5e5d6c6ea478a216e1e2c643138e253d6a. 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/JPBV00920040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4809d6fb7fbd9b77880b58a46348acec9473c0f86e975443c412d060be102b7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPKI01315349.
orange pekoe with the Big Band Party Night!!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11837aedb0814acca1d3f5ae887995df88c4d234a30223dd5c0a0ac54c74659. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPKI01418024.
メリークリスマス、ハッピークリスマス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9080d310f8065636cecb14b0ee24e69040a3ac730f2b377989528f82acafb03b. 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/JPU902403988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f55f54998b12ca1bf7b0e6dfeb0da358bf9891ecb8f2e9a6ff47106fb633b77. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPI2574427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c34dcb0060b4a548b1eb246453f3dc4c7799d14a46d0c0596096f5948c6a45d. 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/JPB621800056.