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 0x985d7c02cd84250a8502b62ab438bea577bfe7d94e281dae78a3ddb6d83e155a. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d09011fd-4063-4e1b-aef0-a7fb78df1536.json and https://artists.proofprofile.net/proofs/artist/d09011fd-4063-4e1b-aef0-a7fb78df1536.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ミッドナイト・シーサイド・テンダーレイン
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 0x798b9e6dc4f5500cd04e7d1658e152e561d08c561f62641b765a32db12bfa6fb. 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/JPE871903805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8862ffa8ab10c194237cf0638872e20f879ab214a927dc1226b9bc1869bebb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPE871903800.
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 0xbed845fb56f015f7cb25d32a125ef9367783ca0fce80f65a1578686104966993. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPE871903801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209c749c3837747e3072457685d17375ee3d3de966806e2c25f1af35a40f2f60. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPE871903799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04e757ba1eb151dacd1f0a76c6ce8524f30c8780ddf0dd7a8ff0ba73e3f3705. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPE871903807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6563e311999ce471aa1a87bc0c53b45437aef9c1235078a066856e8733b893. 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/JPS801958368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b449b8b342ab0b7914e607e00109a492bcc02178de58a8e265c48ae723cb4a7. 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/JPS801958371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4c8be133d2256535a8b922d347a4b138f6e8047110bd3f3d6422894a32e99f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:00:40Z), 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/JPS801958374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55489f2d29299042fa9ca3372f59ac55e2ccc101e42afd9af1a2d3fc5ac17919. 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/JPS801958375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2a86dbab47bec367c428fce1bdf62d6ae009864699626ddace5849ce6eb19c. 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/JPS801958377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2c90b94c6c92bd41fb37c025794e3d1958e1563c832ec00db44e094547c39e. 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/JPS801958378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6a8981196d8fa77c25d1aa0be7dc4672e75e78634fea8fd862511ed0d6a8e9. 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/JPS801958379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b43d8fc7a2fe4c6a20e7d4edae6fc01c19cb9c70af4ce0d7a42d05e477db144. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPS801958380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9788ea31deedc5ce4d2e4695b4bd399052e64a45fe0eb9d1e4c6d099a5bd341a. 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/JPS801958381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a7d11edba6df9fb10bd85ebc4815c5b497f7576f3cdc5bdbe1890fed8fbd8a. 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/JPS801958382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c6a97a9eb1ff00da0cefe0645d2a51cfda58b5fcc08fc6c4325e869d4c0d86. 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/JPS801958383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a8b14f90baad28bba173b2309daad4c42f62dfe2e777cbdded52d2c18ae234. 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/JPS801958384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb64eda293f3bafcc73a98226aadcf55e81f1d44e17364887d336dd6c05a9b1d. 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/JPS801958390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7e64138e6743cf95e0595e932a1fb248f98db813b90ab11e250c92de88f07b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPS801958367.