Juho Verneri Pohjola (born 23 December 1977 in Helsinki, Finland) is a Finnish jazz trumpeter and composer.Kuka kukin on – Who’s Who in Finland 2007, p. 775. Helsinki 2006. Biography The son of b
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 0xd07a76ed43f6d46368357cdc8515b12418a560ca678448668bec5cc97ac3f58b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c90897fc-978a-4225-bc5d-b99e5d8eb772.json and https://artists.proofprofile.net/proofs/artist/c90897fc-978a-4225-bc5d-b99e5d8eb772.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 0x1a8b55302bd098310eb0d64927ba5836806fe625b7268a7477a1108e9951a2b5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBVEV2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb841fff316b0557e8b71b47cb55d6884c6f01c30268d5abe339c341ccb35b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBVEV2300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c5fe2e7c7c9e11aeb9ae864f08f70388f5acef80a94178dd004ed4853f79e2. 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/FIWJZ2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9dbdf68f221e33ff6989de348cdc2eee3ae420416cde82549fe69658fcd776. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEA891600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3bfbbda7e530de2e0662d0b56d2ea0cb033c16dea69e2b813427392a53b00a. 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/DEA891600331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260da0c3b801e0c5c644e2bb4c27abea71b13a4bbcfd196485050e6088cb34ec. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEA891600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf83053f96279b3b4e7ed7a80c0461b8d0b53204f5235d1915634a7d9f78cdbe. 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/DEA891600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c835e3e6ed39667a9cadf481cc5ea7da7ee892f96a177350f4d80885c6523. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:51:25Z), 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/DEA891600335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0de4c5a72a5cac2c8ea634b8cefbff31aacb45c71682e7413540622cbed97. 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/DEA891600336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d6efc594959cbe226eb92770255939c439526ddc7b09064ecaaa66bed7a314. 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/DEA891600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43969457010e4b68fdcc7755d0638a7c5a54398636eb1209d461ef2879515e86. 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/DEA891600339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7c85a9fd009443e3d9d757d69adf00337d76e3ad613db091989043d43f8675. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FIBAR2400645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d1eba87e2233f84f59132e76abf223221773ab3dd36532d485c35ed0ffb98. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEA891600334.
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 0x05317a05a70a9e215542d5cd75c8e0b2c0f9bdf69687d406fd53c65844484544. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA891600338.