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 0xb1e28808272d6b3cde1bece85e13839857f83e0df4d7fc257eea2102dfb2c06e. 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/13ae6e49-c310-4985-8721-ad54dc797a20.json and https://artists.proofprofile.net/proofs/artist/13ae6e49-c310-4985-8721-ad54dc797a20.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 0x3b9351c19bfcb363041805b33d8eb62a40f400cdb90b061596dfd7b2ec3fa473. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPA651804267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3140cf436c9ac6165828b050b5ab004ff92d55d16480be416ac3f22ce40cc241. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPA651804268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a671becd1ff7849e0845ea866120996270878719f70fc9ad83a2365249877d4. 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/JPA651804269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714e78a640fec307ebe4aa412b48a6298af610c3da9e851f40124816f31445b8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPA651804270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf120e042f36f1ef5150d8c161ab1ab003aea33e61a3fec24fa52cca18eafd769. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPA651804271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5018b0f6c2be58cc773f42293490d3ff9528b18df92b5bd5590fc8065c89d44c. 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/JPA651804272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d35812826edb569eebaa71aca40e3e5d9dd16ebe6b90d3b60b74cf6a103f437. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPA651804264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b7dda32a81beb5f0da86182e0c926d520afb7a73197581cf0ad76678bf9edf. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPPC02000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf9f0cc9f23e16dc4e19f3c976be8e28aff4d64383d1e9e54a6d56dfe74efa2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPPC02000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9430dee38424a1fc26300dbfe475a6129ec8fdd9b230e2dd1080c51e739f457. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPPC02100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12652dc9ea86882ff00275c69d0e43f29c6850107aa3b633a423ddf5d954a4e7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPPC02100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d37f0e3e64310fb8438196e6a87d2690509afb4db2242998450341b57b7da13. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPPC02100319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca0635e88f042d5dbaf39c386a5c370159180f002491feabc951019e361eec3. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/JPPC02100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd555f0534a33e2c07819064ed9e60a2d99abbcf001c4196d5d5dc6f68693af61. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPPC02100323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb6735b9f89ca1d342dcd0dfd5e33df1ba77b68f11bd51cebdc58e308cd890. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPC02100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870713ab884ecb4387b5cc54485705f284b2fbf384ca5f539418594b2e94263e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPPC02100325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02997a63670f530452f597c2afd7f08b006a12cf813a8ff133cfaa9da83db64f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPPC02100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6728eda10bd368f272552d42d69d01f5208b7f2d32e2aec73013b6ad52b485ae. 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/JPVI02202048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e352e19125c28c07eee12c18affe86516f6a602056f3232fb8da6dafac7fa81. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/JPVI02300745.
Theatrical Case (feat. Wolpis Carter & Mahiru)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f3e27aa1179eb268e0eba346a33c448c2cab385dfdbcbd1eb18dd8a34122fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCJPS2243277.
Exit Tunes Presents Vocalodelight feat. Hatsune Miku-Digital Edition-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ee268c71e90bcf277794c1001479015373ae9b54a1d213f7f01db4943415c8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPPC02111171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0edc410ff9fa0291ff26b200d5cb9f6496e6e9dceb7134d3dc1f05005adcf5b. 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/JPC232300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7220e576b7e3f4d0b59e3a9714c3b29574027ebd3827f6abe471507bd73f1067. 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/JPC232300024.