Per Asplin (10 August 1928 – 9 October 1996) was a Norwegian-Danish pianist, singer, composer and actor, born in Tønsberg. He co-starred in a handful of films as well as participating in Melodi Grand
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 0x267c49ce4e49b4af0a3cf05d229a1f71bd12497db1d0736cf82eb2d45270de84. 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/5080bb21-caf7-4617-aa5f-733481ab5d8f.json and https://artists.proofprofile.net/proofs/artist/5080bb21-caf7-4617-aa5f-733481ab5d8f.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 0xda13c753be36abd24071d4d3e9deb129de6994e5afcf3aba48376a7bc09aff8f. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/NOAMM0500427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb227ba663616190b75a73f103f0c0a790e2d88898d596e5571bac66fe3b3b1b9. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/NOAMM0500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45788befac22c1986e068a9ebaf93ab097b665a3e75c05e5d9dfff2b819af226. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOAMM0500437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ee78a403c47424b066b404cf5ea1dbb2a03f33369ad1b714e15df39e1816f1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NOAMM0500438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bec697dfa1c8912e645940ce04664ad3c61a8e013aedb23f257e558e47dd0d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NOAMM0500439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2830ca50b0c1db13a60c633d3caff0edd06f20c919d6842493e5a9d7aed7d384. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/NOAMM0500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a888ed8e5ac4477f4ecbf33bf6b1bd71ee78244de491fb0e9ee0f742c23e5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NOFBT9303010.
Putti Plutti Pott - låtene fra julemusikalen
Lime Tree Islet - New Music for Flexible Instrumentation - Demo Tracks 2017-2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa312f8dc3ea6864de750534ef4c37c638fe68c9a5b036f3381dbc7def235d8a7. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NODGN1705050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f726e069556797466301f075d2b290b677a6db4e765b898cdd7662e8bae6f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NOUM71102148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1e331f6aef9768b49068204249a3efd530be6c0afb65aa448ff0ce1d64dd9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOUM71102156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbf4392fde7709a17878d578d8fa82d6495903a694ff06f30a77735ce761a7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NOUM71102167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153aaaf0b14b6a2af73cb86aa082149cda9dc544aef4dda0c3b8835c509a0768. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NOFBT8845054.