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 0x1d0c75c187fbad6f5bf7c85b8203ac9bb3fa9648b87a86058b8ae622771b7530. 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/9d820ff8-57cc-4a76-95cb-e796489c1509.json and https://artists.proofprofile.net/proofs/artist/9d820ff8-57cc-4a76-95cb-e796489c1509.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 0xe6fc56951d5c0cad1d0a864b07caef2c1ccbaeeca2a361f9bc7a310627a5f412. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPPC00701486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f54311ca6f62449ecf6f725c0fc297e942de2860b2cb4b69d12d00fb04bf78. 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/JPPC00701485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f54311ca6f62449ecf6f725c0fc297e942de2860b2cb4b69d12d00fb04bf78. 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/JPPC00701485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65e7e16833302e01d3ef321868c3eaf6db1aa22d0f9887ff4432798175e6f2. 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/JPPC00903267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4633b0ce8f30f56e8b910b8118a9b050dbf2d4375f0f3b69b9ef4b86b235933. 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/JPPC00900918.
Nurarihyon no Mago - Sennen Makyo - Opening CD
ぬらりひょんの孫～千年魔京～オープニング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9903c81f7d21704cf427ecbd5a5a62cbbba9bba5592a96d0e1acbe0447a525. 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/JPPC01203786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9903c81f7d21704cf427ecbd5a5a62cbbba9bba5592a96d0e1acbe0447a525. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPPC01203786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a870267c9d52d68be096447905157ce23c8afb55c4644cbfca0fde9c531a0c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPPC01203787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3008f0b1dbe0625624c9632748e8a249ff70b28798853a70e427632e5411893. 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/JPVI01431430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf682f0aef14ca018e49c63d030fc2150ecc565aab5544960b279879113639eb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/JPVI01431440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831a0b9880876db21e41f6d6fd722936a1078b806fb0d6802acbbae5c30b3a8a. 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/JPVI01431480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b258cbf4856fcb9fccf472f4346c879151ab1d23daeb0ba5a602384562e365d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/JPVI01431490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826cadab4ccb0b60190bccd447cf19e34e64362b04962a6e02fdc6aeba5e8f69. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPVI01632900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5422f11aa7d63754e0abe8621927ac4f426cfa09ef803a57f79e8ce89f7670e4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPVI01632910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c4bf80c4b97b0e8ac811a425e3f3083fcaebfbd5629aa1c5b2f2eed1e123d0. 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/JPVI01632940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f54311ca6f62449ecf6f725c0fc297e942de2860b2cb4b69d12d00fb04bf78. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPC00701485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fc56951d5c0cad1d0a864b07caef2c1ccbaeeca2a361f9bc7a310627a5f412. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/JPPC00701486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65e7e16833302e01d3ef321868c3eaf6db1aa22d0f9887ff4432798175e6f2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPPC00903267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4799fbd6aa5beff8991d666f2c84c8d71920de31cd96d2f9a7edffa3dacd3622. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPVI01613850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54564e57421ceb701c68b813d5899fae264ba2f02366670127b249d1b047b7d5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPVI01613860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3edd041536c3d965c2aa0a7610e340c84a38143cfbb8e9bd5a0ec2d542fddd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPPC01003251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4633b0ce8f30f56e8b910b8118a9b050dbf2d4375f0f3b69b9ef4b86b235933. 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/JPPC00900918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab8260fbf4d0bbf64a1d86f980300f496601d594c9ca678e65e1ea819a76f03. 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/JPVI01871950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134fd8270f896b3ebcf571fb86da3ca3f55f76b83cfa6299064f793480bcabba. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPVI01872030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1b8ce2aadf1df4e1031735b18d0ab9014c8cfdcd0a54a35f1ff1da637a2f4b. 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/JPZ922308738.