Sophon may refer to: Sophon (name), people with the name Sophon Sophon (restaurant), Cambodian restaurant in Seattle Sophon, a fictional elementary particle in the novel The Three-Body Problem Sophon
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 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 0x2589f31feea010904f0bbe090f8dbc2ea79ca7b1aa6f617c6f029e50d6faa517. 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/70a61319-0c7c-4483-920e-bf4e388fecc9.json and https://artists.proofprofile.net/proofs/artist/70a61319-0c7c-4483-920e-bf4e388fecc9.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 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 0x10d9d07921e2e4763e6b2ccc4c4d9d0b8bb207b604c3d847644d331c5cb19103. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZS662292114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf3ebdfa6af504e63b558623e9897232a825e551421fcafde3978056247b577. 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/QZMHN2250512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeb9b71c7942df6a0646e63abc923f6eac3caba81878e9b4f5548d41a8f8def. 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/QZMHP2330813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb17b819e738e1ae92eedf904df4ecfe72a96f57bee66edff1382daaf2d03414. 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/QZS632231722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205c331aefca8f5b7e9d79d74c7848be45461c0df3a394cab540f79e35b86fe. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZS662249521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4a95db734927ee66261717c55205412927d6f54f31223b180561a4b8c3056. 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/QZHNA2265993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40caded010a3efcf4d0132f3f893f0c060bbfeed345d28f3662e0124c283d87f. 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/QZMHL2282446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769b85c01bc0cd80eb5ec0eba67a12e0e77ac223384409d57507d0c544848d7f. 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/QZMHM2304635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f7a5c4bc02fdd9c74fb3c87e8d96a445123291d709572d9edb6ed41f8fa7f4. 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/QZS642374611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa412ea2c6d51758740e4fc73173e2bc63cf07d6f7406972958f95dc579b4e85c. 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/QZS652249004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2090dd891998751329d431ef7c620632ad9f1e12a3682945f5d3739da87baa9f. 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/QZDA42249789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ea343eaa2cddf0d15da52e316513f5338e708b26967f27410efdbd23c34b59. 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/CA6D22100865.