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 0x19f38a338a1f9adcc4e1d484db5ab11c2e3ea71d137c2a583399030bfd913142. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/927f625e-9d63-4193-9893-b89ea70c4094.json and https://artists.proofprofile.net/proofs/artist/927f625e-9d63-4193-9893-b89ea70c4094.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Planetes Original Motion Picture Soundtrack 1
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 0x4af3d31540507423be20609b92bad3e1ebe49373f20e4af0c3bf7565d4486efb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI00330660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99287e4f7e80f9826ba3204846cd2eede837d8f94c6bfed4942e5a0b25b135e7. 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/JPVI00334380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f577258ce587ea51b1fa68738adb49cb6452c62b47e65df64c0912d7d71389d. 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/JPVI00334410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3819a338c8b59f3af4dac8b0fe65ce9e839ad8662285a972255dd5abdd8df89. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPVI00334420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc6260a2434cd5de1d049a5c114f9da15ac7e5745036a0dd97939c09807131c. 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/JPVI00334460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a55e686c587f9e4c4322a89ed5b1185095871814fc03f969ed559917bad17f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPVI00334440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28332ea92917b3d4b9109cc144a0803e717750f907880e5ea7f1c19c36c11b1. 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/JPVI00334480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e40847e77311db43f960e2548e864af35bfac135dd7495715f357d230bc9884. 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/JPVI00334490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725fc370da82c2742cbe7af75b93cc151e522d5e8d22d9fc5c1ff0ffbb2ec0df. 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/JPVI00334510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54e34752f6340c542d44155634038a3c923abc736148768109287c4e0fa13d. 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/JPVI00334520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f9857ffa646457a2226f2637b2b93433581476cddee82e26e5f43288b082c0. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPVI00334370.
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 0x1e3fdc0c32461b0a8c60f3ac745ae7093639060835bb00c874136bdc36a6b287. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPVI00334390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7b0016ee4090593358217f2f50c13fe158f02e546fca999c83905c8e4bef6e. 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/JPVI00334400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa232d408b879f725c64f20ddd450cd6e29abf71d8d345416c2f85d807a49f6bd. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPVI00334430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011b5465cb9d3e29070f50f3227bfaa623a3c39f75e10d1eb29a0da224f9029c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/JPVI00334450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b1d2c69ac57e3c664e305a169150dcd4558b3f3836203c557dcee31bbe3a96. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPVI00334470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5445d1846c968676111ac16e0cf45cdf2b3be098c3a34f3d7f5460f0e9e12a3c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPVI00334500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64f408491fa2163878e56ba43d31d6dae634a85427c5462bd188d976423efbf. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPVI00334530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda416add4e62882f81cf906cb352cb26472ddaf307c1e4dba2b981541020d275. 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/JPVI00334540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecd00facf2f1fd981c4223a2cee41839641c2701b729afdaca293c30785f8dc. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPVI00334550.