Villem is an Estonian masculine given name. It is a cognate of the English language William and the German Wilhelm and may refer to: Villem Gross (1922–2001), Estonian writer and journalist Villem G
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 0xfb022b933917333a995a9ab345b3125667541785b16574568222876f35d388d6. 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/0fa60f66-a95a-4d02-94e2-4549002dbccc.json and https://artists.proofprofile.net/proofs/artist/0fa60f66-a95a-4d02-94e2-4549002dbccc.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 0xd977f59f8b21d10fca56c2bcf58a33c396f2a2b69060a20602142326d2cb8b96. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLCK42211003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9007f17cb53762168b318220c1552b2a66e3443936dd26cb43a2f437be2218. 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/NLCK42211004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379ca5382deed136e3f91158fd165c749e969918bd47f5336d446c071b91af22. 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/NLCK42211005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd776b0c891202593189058b4f30d820ab199823c93165f12f828564413d4a760. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLCK42340543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f88855e61b5bea7ec90bbfc81e033fb9ca2eb9f30174e1cf77508ccb73acdb4. 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/UKPMY1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a4bf72b272f82de46b6db59ee8a41c919d89c37ff759c7e7fc133993322455. 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/UKPMY1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aff420aa20b95148a98718ddb99e932fe8a53ad2b787c3bfcfee784e6fc792. 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/UKPMY1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd776b0c891202593189058b4f30d820ab199823c93165f12f828564413d4a760. 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/NLCK42340543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e173454aedb5bc08ce1e3be31628cb4463b1cc542cd2b4d6a802d4e5cf76bd7. 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/GBRF52200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a566dffa9650b0aa6770d7155806cb724d1a632530d5e4a5662c50bd59130d7. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLCK42212120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d234ff5edd5c8876adb617ca378bf3387986dd8b0a67c92c78ce5482eb8caa. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBBHF1310303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4515e1aedadfb9720487d4fc513a81208c5b6f9884954897e785919a00fb6dec. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBCJY2000375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a434746e780d97ac7e981991cab6603f20a11461f589475dea2109da3e7b9. 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/GBCJY2100311.
Are We There Yet? (The Med School Scans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862cd89e73eb51ab4caccc7a84ee50205189342004f5b4aa6cc672d08328b6d5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBCJY1600158.