thumb|Brotherus in 2023 Johannes Brotherus (born 25 October 1997 in Helsinki) is a Finnish actor and musician. As an actor, he is best known for starring in the 2013 Pirjo Honkasalo film Concrete Nigh
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 0x79822ec9adc37399f68c2d3f2b03183b23772b8a111ba7a8e267c1001c19d3d0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df13ba36-0dc8-4bfd-8c12-1314e8500f59.json and https://artists.proofprofile.net/proofs/artist/df13ba36-0dc8-4bfd-8c12-1314e8500f59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vapaus on suuri vankila (Vain elämää kausi 16)
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 0x3d26a9dffb0fefdcce091c295e24f8532c832c5e40544bef7e87ed3ffc3aea71. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIUM72500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb090074f8c748dcef637e53dc585b25bd9a36d35c80dac3f788cc8017f2e5a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIUM72500232.
Vapaus on suuri vankila - Vain elämää kausi 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed63ec06f01df723dc29dbd62bb5461fca6ec115b88faea5eff91e4ed8748624. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FIUM72500248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cdb9edc2de935ad7c61991e9261f105cd6b6cb6890531f8dafbf85dfedff26. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FIUM72500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36646a60fa840b81254987c6e8dab286d57cb3e34ec83d1f98663034cc73c0de. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIUM72500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c7be4dbda31d2e3bfe963bc9de4a1fb848497cb5498576f692fc32f42a0aa4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FIUM72500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8370add64eaf8b31ee1d14ffdb9799aa8cb387be1474378e91c869fa1d7090e4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FIUM72500296.