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 0xb0917876ea61602a83fd811757cb408e82cc0ad2a2127889eee9dfde73349a78. 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/9e0c1f47-a962-4b89-8e02-2adf7ba346f1.json and https://artists.proofprofile.net/proofs/artist/9e0c1f47-a962-4b89-8e02-2adf7ba346f1.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 0x30af028d9aa635bce0b42549c8094ddcb7425f7b2df31ae8d10091eae5024ab4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPF700501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df21d19d1b5087e43d8db25bb0e4034ef7f3c1c98f86b970802d6ab2df2a2c3. 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/JPF700600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe007c2516a9cb40a17043cf7ee5bb24f73aac582effb424d7155e75ba8d247b6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:54Z), 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/JPF700600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3fe419bfc0f8ad3beaa56dc464bff9fcca02d7a29e008ffd23476ec9c6eed8. 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/JPF700700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3f0560e153579d878f0ecf3316c51e441c184df49db1e0c6e000b9dd8633e4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:34Z), 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/JPF700800603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323596b0f5a211589609bbeb8a1fe71031c04618fcdf357cfdaee23772966df7. 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/JPF700800604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3a44bd299e21010ce541e0b839e732a9563668df8be7d53446295441991a8c. 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/JPF700800607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b89d757859245c5afd71bb7857558c45266ee62a0d6e74136d2810ccde27aac. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPF700800609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd323b69b45676087b3f1f064647c6f9734b5c78bbc2a3780ac7e2798fe7fc32c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:49:55Z), 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/JPF700800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2d2352b104e8a1162e49d59f7db3950ec0b6eb0f423a593876e743ef0c875a. 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/JPF701102214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30af028d9aa635bce0b42549c8094ddcb7425f7b2df31ae8d10091eae5024ab4. 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/JPF700501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d9e49e28b0829eab3050a2a3c34abacbd5334ae3de156a2dbec3836d6d9e44. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:17Z), 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/JPF700501101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3fe419bfc0f8ad3beaa56dc464bff9fcca02d7a29e008ffd23476ec9c6eed8. 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/JPF700700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e05f07044c0ea83db4a928e87d879a3ecaf273914f4100b2125886455959f1. 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/JPF700700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069731955b5b90ede0068e2662fb75ef43e39694dd24cc4b63fbb0a890adfd5d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPF700702401.
結~ベスト&コラボレーション~/ベスト盤
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb95aacd271b1d8d9e1b9915aad60e954beedb632c4816f57bb3614088a99b43. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:11:11Z), 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/JPCR01303260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf31674987b0fa9b1e63eb52707137e0296346a4016a49cd0feba6e9a747612. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:06Z), 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/JPCR01304180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b08b4a1d6074d240d4c515a7fa12bee07d7bc9183155fc0f1223b963665671. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/JPCR01307570.
縁唄 ~フォークソングとやなわらばー~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219d068e1e61fd80ad96fc150eaccfb80822397814d4237fcf1ef06802ad7d9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:17:44Z), 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/JPF701801907.