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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 0xa87d07d7a120cfae9f80a9bb2e2ed2adf007e5db660d0aa232030c0ddfa84000. 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/c6536798-74c5-4962-8d6a-4e8757377632.json and https://artists.proofprofile.net/proofs/artist/c6536798-74c5-4962-8d6a-4e8757377632.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 0x5aa48f6a777d1a2fe2573ca562d68669f5d38800e7bd348e87bd0149d777475a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:01Z), 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/CNE041600496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9459d4d60090b3c30971e81c90e9fc93961c3387bb3bdcdf20672c66be27c77. 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/CNE041600498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c30bc3e8d34f4603d137e0a155c01b4d52ada1a9040b6ef4dc7fea8f94f3168. 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/CNZ631800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc6b862836a8d6e3a839e74fda2e48d6b822d9698e067491ebe766f3cfa2c9f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:38Z), 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/CNZ631800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c15ba6ea20bb2799bbfb52f3c81e3523f5addcc54c5faeff522e8de272575a. 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/CNZ631800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441a4fb14a83a69acb7ef2bf4fd79de78a4481d31f589f887f5db6cf42a55799. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/CNZ631800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae4a41cdf099d1a1a9b46c1b7e96702d9781cdeed1d4e498f4d1b6dd5c944b2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201994975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44a01725073926f6590118d4da5bf749445339474f483e93486a5955d4bc189. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRX201994978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983c179271ccd293056d6c7650ac91d6f58509754eb9cda5c192cd91ed49cd87. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX201994981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275fff0f50550945a421b6399fed02b9e50141ab78a0869ad651578e214783e. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FRX282004534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d14f913d73403dab212fd2a403e675d2ad6662814ba3aeca0dbaa00cfe0bab9. 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/FRX282258893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fd8581fd5e097a9a47b9449e4a3880db24f0a70b7246fb47ff8f6ca060333a. 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/FRX282258894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc503ec5fb9f9c849f519cfbcdc65ea82dee1b395dfb161dc6ad7a32052f06b68. 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/FRX282258895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f6d54234143f24e00bf7d16177f60529fa6d9e777f7e29693600e8a23c88df. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX282258896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd285641c1e9a8bb71f2c7345fbb0cc4dd39ec4fb230875d3a2df965da7d5a1d4. 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/FRX282258897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5bd8e398d9b7eced8c16603e6799d83d090b70979d89191a02b8b277042406. 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/FRX282258903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13da408a276e23ee75ee78ac226a126ae47f1ead910526f25acc6eb3494ebf36. 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/FRX282258892.
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 0x156561a7c7ed694514969e36c58dc4c5a4791bb0380f2a19ca87a7ce3ec772dd. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/FRX282258898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281b6cf1c7447f016fdcc7cb58825d010f40cc4ae0cf678410202c5aacef5196. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX282258900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68b9a82b42bf03546db98fe82cafbadc7bd5c1a108dbcb83c7e4ff87f6abaac. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FRX282258901.
城市裡宣告夜晚的不是日落而是路燈
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a08063d3ce1e91c4c5c396fba3d9c08fdfd74cd40d3445ebae7780282b9e0. 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/FRX282258902.