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 0x4b45055c66739225bac5a2c4a2e86a18d6cfc2b1e1bbb9d1765bab63be1806b4. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efe72f67-0d19-4cb1-acae-11bb6cd49cee.json and https://artists.proofprofile.net/proofs/artist/efe72f67-0d19-4cb1-acae-11bb6cd49cee.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 0x8e02aa4cba9395c41ce8430d9a7d34733aaaf74b8f354bc7640805a2948c37d4. 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/JPVI08003380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15c74746dfd693df3f46b03f02fe6444fa1159f8b0ebcb070a71ecba69b9eda. 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/JPVI08003400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567534ca3ad140d20f565621f1fe595e910ef79e2db626b89f020a6fce965b57. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI08007900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e99857e50349ae258a0b44cc3ae15547c97bbdc8154359a32e32db11362f23a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI08007920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb3136fd9f309a08e48a2925696003e5b41d219d84b068bca9ecf8f20fd45d7. 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/JPVI01021720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c305419fee3afce3924b0d9afd163e699d89e6b07464e6f4dfb8d7f59b096d7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI01025650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4606c19b92c81284df9707924bb6fba800b3ef02b0d1353cab048a4aaec4b9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:30Z), 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/JPVI08003360.
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 0x15d65bebdd1409eec0e098548f2816fbf51c2a293974ed37354c99d1d12eb21e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:09Z), 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/JPVI08007930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60267eae6fed05bd4ab47434671707fa6715c32948342de73074d46cc5d37c41. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPVI08003390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175ced4fefe1dce7b5725c3b3a5338574f45a4498cb801fc7834c9ad6ff159f8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPVI08007880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c9359dd6446886b7e623af7ff0cf6bdaf5091ade14ae042ca0ab971af85bde. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPVI08007890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c1b327df568ff45dc15832bfef3cd98839d0d230cc4693a5dd5e1b70b0e839. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/JPVI08007910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4ff245dc378f4ec70f6c98bbec74eb729031564a654fbe238c40453e385de. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPVI08007940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2177b0708706a80b505e3ca31eedc2317d4ee8c16f94b34cee7f2619075730. 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/JPVI08007950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c497ec354945d24ea8b8fd5825882b8f434897118408354b5edbbcac74178ed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPVI01021700.
アンドロイドな女（1st多重DEMO、リズムボックス）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7f8e29d8926136dd20216bf62c590f86e484bb673e65efa677a23ec0b640ed. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPVI01021710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4736ecdd0c07bacc192464176cdada21a9ec663c22775629381dbb62d9792e. 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/JPVI08112150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5694a765bc76c08402d35a5ee28a1f44e4b216eeb6b6356b5db0f070111e0975. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI08114210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e5aefc4ceb2d51213a2ac8f06b515c305f095181fbf8d775be64c02c410b77. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI08112190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f443e4e0c02161229ef7bd8db87eeac8c26f85251ae75529b57c775860d21c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPVI08112200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb294731ac406390f62ffa5408bea66d1d44c94bd730c29d7fe73ee36bcc6599. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI08112140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7672808656f9ba7084e08f0432d2493b8f0e1f7c900bd9456c49c3caf2e805. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/JPVI08112170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680466f7e222138b58e85052711611d0a4a414689f2d063aa5ade70a909fe58c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPVI08114200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede4812fbffdae6e38712d32bd1db604183558fba8ad37e18003e2bcaf24cc96. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPVI08114230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6df9ac53a5865beadaad41f3e5deb0a1b93f6591b315148612b2b88fff63d9e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPVI08114240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75449b8c0b00d1a7da835930b55fb044062de026cff19aa7419ebc46d9d9063e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPVI08114250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4957c02a304134dbb62bcc10ce4bdcc8e8d2d0179791e1040f84d319488e5e1. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/JPVI08112180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940571afbfd31a1bba4544a9b91aa582ddfaf597a11ec80a71ff89c1a40fade. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPVI08114270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b578b9c647a9f01d1907a239a03189b1a52c4db92124e55b47fbdbad04b8bcb. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPVI08114290.