thumb|The largest ski jump is Matti Nykänen Hill (previously called Laajavuori Ski Jump Hill). Matti Ensio Nykänen (; 17 July 1963 – 4 February 2019) was a Finnish ski jumper who competed from 1981 to
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 0xd8be7be2c1818b711ac96ec08971f03f2326485beb344a86c97807f5a460a7c0. 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/f1385b5e-6c1a-4e02-9cb6-5468abcec366.json and https://artists.proofprofile.net/proofs/artist/f1385b5e-6c1a-4e02-9cb6-5468abcec366.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 0x7c438729852fa7b0f4ffe39e0fa2cf27c39cc7944fe145d90c0707c3acf9d6a1. 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/FIARA0600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa789df02fc21af419c0f77dbd217b18826f5d59ee0cbebeb999f2a94b2f722. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FIARA0600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d53b35167cb9cb6215153944b25f4f43e046bba920e85c54dc1c1ac32bef4b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FIARA0600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc187174126aca54febefc8c7a2a13a1e317219f50929c7bddf8a7df03b0421f0. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FIARA0600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4a558262ec21f8bea680d5f0d72e05037b6149ad429a0507b8870459e264f6. 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/FIARA0600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082f98e9070439aebde5faacf37f1609cb85c8a1e8a16db8459188d405e5d640. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FIARA0600033.
Tuusula mielessäin (feat. Teflon Brothers) [Vivus Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de0fdf938d74637bb151961bec7250e073e9846077fbe687aa306553988287. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIBAR1800306.