Oliver Tobias Freitag (born 6 August 1947), known professionally as Oliver Tobias, is a Swiss-born, UK-based film, stage and television actor and director. Biography Born in Zürich, Switzerland, he
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 0x11ea3b640fd51992489a2ebef4c43c2e8b8939f055a6b1e5710cf031cd9637cb. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80d7b1fe-841d-4bf2-b485-f6768dc06938.json and https://artists.proofprofile.net/proofs/artist/80d7b1fe-841d-4bf2-b485-f6768dc06938.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Die Entführung aus dem Serail, K. 384
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 0xeb6de11172d9dae2180921ab1c50fd09eea85e9b874c479837391cede5307e1e. 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/GBAKW6800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b0190d4ecab026370ada3af7d3d4c1d0078cb71fff9001935594236f82b021. 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/GBAKW6800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7431577573ed6508dfc9f4396854816a84eba563a123fdd5a2e19fbd8cab4. 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/GBAKW7000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb731163b2dcded7a48a142f26a29f963f789f2ba6fa70b9dc14029232312196. 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/GBAKW7000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48432f3e688e70a01a1e8b5cd14a84c81d7bf95a152506fd3a80617c24009af. 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/GBAKW6800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8165c04ffad4131787306919dcfdf8e2f9b82fee3063eba86e08754e68bdd1. 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/GBAKW6800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208045a0da617762def8d79f366de3771703adfa46563057baf4a69d0f2502f. 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/GBAKW8800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a9db2878c2b3741b36ce5d77d5e58cd3c10a46622fc2603bf2df4e864c4219. 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/GBAKW6800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370c159f68ad997fea0760b7a2ac1363778616406c84d4f4e4cbfbce65424c0. 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/GBAKW6800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407fa54bbab829c1007cf9956f9399d0a7a393e5e7ec184d202c81ad8784acc. 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/GBAKW6800128.
What A Piece Of Work Is Man / Walking In Space (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfab43da99757dfa6838c3f27d633d69fd68447f3300c6f2418c464c4e41f05. 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/GBAKW6800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf9b47746221dd5d4eeb1bff7f6b51e4961a624b1a81a5bdf37e27b91428aee. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBAKW8800100.
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