thumb|Kjell Aukrust (1965) thumb|350 px|Aukrustsenteret (now Huset Aukrust) Kjell Aukrust (19 March 1920 – 24 December 2002) was a Norwegian author, poet, artist and humorist. Aukrust is principally
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 0x0feeea5c614afb622e2d9234462b480e951e2374e61624f2c57e751226078b7e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0d4a584-32e1-465f-8634-22b4cecfe23d.json and https://artists.proofprofile.net/proofs/artist/d0d4a584-32e1-465f-8634-22b4cecfe23d.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 0x1f329081bb3e1c10c41262ee5da31179969f0552861384427d8a3fb9ed4a87aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOUM71100482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8984430e0d28120a9a5d25929a9bdb846d0b1fef8dd5badb2f02ddbf7958a673. 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/NOUM71100493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3993ed9e21559b072a6dbe5862e032d3d40c55fc054856a4e9afb21b642246f1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOUM71100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d66740cc7057f33b2af3195ce48f4928c830448d24009f18578b372d962e65. 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/NOUM71100495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b40d3b94ed60e4a7e27411836731287489e7867de7b4383a57c0c6303db44d. 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/NOUM71100496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fad7bda3a1150a8b105c5bc1825cfd8b0bf8845fbfd257b3c573782f64b0ec. 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/NOUM71100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c5e6618693303871105a7d0a1af8b1a91a8df77c596c69bb2f40c9de49cd06. 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/NOUM71100498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd057351b144e44714ed53127e9638e9d2a521d50bbc1fa1325d214fcad40899e. 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/NOUM71100499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbcede98a579b4c5b641287c12055b1c98d00961adabea9eb87bca4489ece4b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NOUM71100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79e48ce680c4bbdfa0271504284abb9983fcbd4b0d282ab828751c1bb6284d2. 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/NOUM71100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeae5cb3556647499145a5898fa10f1bdca21e165711a16e38f030e6b9b9847. 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/NOUM71100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5369b87adf9d7142991ea33d30a0df0504de068964c95e70593d1de54bfd1b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NOUM71100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ec6b5c8b631a0d2cb5f6e694c68050f2c51f1b7b22ef171d6396663d01daf. 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/NOUM71100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4055d45d6a5fd994afecf316e0ba67c65cb5ec5cb26195d3d36ae99875de3494. 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/NOUM71100505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5189ee4c8e8c5deadcc1f09c9b52c385ec603813efefce95902e774287a354b. 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/NOUM71100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64149ca5f9e855b6b801582219b8359f861f0801f4e933afcfa4999bad700abd. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NOUM71100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d849c972475b12fbf6e855143dc38b182c600977bf8ed0d52b695ec78025c0. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NOUM71100508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9650dd79385fb7c5dfe3c2512da8d6c4dacd4be2b3c3b4ee89b6513e499f64. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/NOUM71100509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7174ee4182adaf349e3cdfbba615aa888787a97d9854cceaef89449dcd7b26. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NOUM71100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4218db8cc17d458c59edbc39880342deac687ea3cd2d1ffd755b4f97f0f04a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NOUM71100561.
Stabbur-Sanger'n (Nei, Jø Så Fyse) - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343bc3963bc4a4ef89872b78f39147be26fe52f388fcffad30635786805c2a56. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NOUM71100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115c8a406360a3426038fd519a4a8434baff5cbc1c8f1347131e3aadb4e352be. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/NOUM71100511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d027b00dd55901c7b8c15bc618ca9ce2cccec75fb4929be8b26a1da3ad100b0. 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/NOFBT9600912.