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 0x5b3d0cb31ffecff1a7ef32febe69576a16b7c84c6be929501f40d9a039f78957. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f36ebfa-3355-4b9f-b328-1c33679f6b02.json and https://artists.proofprofile.net/proofs/artist/4f36ebfa-3355-4b9f-b328-1c33679f6b02.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 0x41c512bcd8b25740c77d264ac3de962e0f3b3d8c890d545369b56f84c7f53926. 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/UKZGC2406440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072602d791accfc606f99b31ba7f8d0e11938fb756f01da89943315c0f257f82. 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/UKZGC2406441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1562d4cddd8797a037a64a75166db604d96e98ee93e764d845dc155a20fca26. 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/UKZGC2406444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e968f3abe7a85bd6710bc12d0b4f06a26ae60d6ea3e4b1908752329a5fb252. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKZGC2406445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8807293b98861bb8720a1c3f0c5792b9f3341d87fa411a604132fbc04b76787. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKZGC2406446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d99e922af6d6bb2cba5952caa8728dd52087a67a1817da8be6b5d65e883ffa. 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/UKZGC2406447.
Reason of Quitting (I'm Quitting Heroing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db313272b520602d807fc3ec4b48ee2ef767fb04329d5b33a50dfe834fa2579. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKZGC2406449.
Komi Wants to Help (Komi Can't Communicate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4539fe962c992a4fb748309e1aff5121397adcd4c15817a13f5a83842618f818. 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/UKZGC2406450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b2b6d1dbc312bb0ab5a59364f3a89971ad00700898815606dde6420b53629c. 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/UKZGC2406453.
Dazing on the Sand (Shiroi Suna no Aquatope)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dba8d03c9f1ecca32c8fe16a5c55eb6343a3727dbc9801081870b2d398b5d71. 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/UKZGC2406454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af6a336b15735e9a91d5eda0eee88a3b4c2de2b8bd01c5b05cf32a6c669646. 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/UKZGC2406455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2633717088d32f8fe4569bd9e6250c167d697cda0726d2e5c4bc1485cceeb0ae. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:27Z), 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/UKZGC2406443.
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 0xe48d0396778b439e2faf6224ca7ad98e43ed3027ed114d593e44bff80f38dfc5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:07Z), 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/UKZGC2406451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b02443666e860ad246ef4fb3fb8b48d46551e5dfb3d6c2b934f1fd2f703ff. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/UKZGC2406452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa2ee575f44f85e9cd11be7491888e295023312da43ada5289dbeed6125a3f9. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/UKZGC2406442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cca0f40f17798f3a68280d27a8d12ecb14edb4c959e5041b99535f43c756a9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKZGC2406448.