Sir Andrew Stephen (20 May 1906 – 25 February 1980) was a Scottish physician who was chairman of Sheffield Wednesday F.C. and the Football Association. He was born to a family of tenant farmers near A
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 0xa83e146c9a3aa7accc2d0602e374cdfc146368f62059606f7e692ad20de2de65. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49ba808b-2c7b-4b60-ae31-3f8f4803d80c.json and https://artists.proofprofile.net/proofs/artist/49ba808b-2c7b-4b60-ae31-3f8f4803d80c.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 0x913ab8e01ca4b669c101db46beca73df4441b7bffd50ef0c14168f1427dad3e9. 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/QM24S2004675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dd75790b19f48e2ad546fd99ea7986983b910bfcf39e6b77bd96399a997364. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QM24S2004705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253cfa6d13c946a60c6fb68110ab5586a6dfcf6e4b92b8cb584f3e36c3460641. 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/QM24S2004706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff3d58d52101c7f4b113975a65d18d10f84e55a1e2a4c9c96220b4b1ff589bc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKZGC2507655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0ce661ce2881891ea535370cdd78f5999adf7567ff793a79180df937e93527. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:32Z), 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/UKZGC2507656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5267a7ac6f690b24f9fe0b66ce30d4fb207f00a29527e65c596c165041b328. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKZGC2507657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f42c8bfeac41bff03c3b29665554b953481f13a7b16e027c5c24d0cc2c9a8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/UKZGC2507658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010250b41e7b3e20fb29363540530e54d7b6b532db9d0ec23f86ef74b098798e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKZGC2507659.