Trondheim Jazz Orchestra (TJO) (established 1999 in Trondheim, Norway) is an orchestral project based in Trondheim, and closely related to both the Midtnorsk Jazzsenter (MNJ - Mid Norwegian Jazz Cente
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 0xf7bec3b2e3107250d5c7dd52c4851009b1b791bf5700da323cc5c5f434f542a6. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8b07da5-baa8-4863-8a8f-2ecf4f9186c3.json and https://artists.proofprofile.net/proofs/artist/a8b07da5-baa8-4863-8a8f-2ecf4f9186c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the End His Voice Will Be the Sound of Paper
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 0x16313c96bccee08e7bb0de338847b68e72364dbc2d069db16ff5593837f90643. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOFGG2246040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7ee031af86ed3504970d41ab3c4c7e792c080a584cfd1cb3529b6adc8254e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFGG2246050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9461d15e1920f1967065e20887c3e36624dcc720609cbea047494f10a7f25d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOFGG2246070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba27ee03596df894d9f065635d2b6c6cfab9db9599feb4cd6b4554ecaae6464. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NOFGG2246010.
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 0x5ec89079f2bd23e531c0a500d307bb13ba3059f0a4f82e41b9712619c132985a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NOFGG2246020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf646a0f25e46fd60ab406df4e5f9b5608ae45f28e5ffc12b1f4e0e5b2808c81b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NOFGG2246060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf185c1f4accf0f94fca34182bdbc8a24981f3b75f1135b247195492c9815fd. 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/NOMNJ2102040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79143df33ebb877eb7c91e194e665198d2320ea580e22bf785c15ece3b898a6. 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/NOFUA2178050.
Trondheim Jazz Orchestra with Sofia Jernberg & Olav Luksengård Mjelva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa983834e41af44a7b9d01449d6e7a597fb47bdd1f35f64bfc7241784aa7659f0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NOGHH1942020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebebba0e160e320af5ce95a4d5c1d543d0e20b9044f6dc16c06defaa24ade56d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOPRR1503030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb30f9a884cd9f417de6740af35410b1fff1d3b1dae40fec5d4a6fa329678c7e. 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/NOMNJ1714030.
Triads and More (with Special Guest Joshua Redman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c99a5cfe4dc00bea573f3490efa00a10b630de2753f173e2f9219787062fbc. 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/NOMNJ1002070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeb60a4ea746b6a208552f3b1630e21c62076e22db4cec311f230796848e088. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOMNJ0401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5136bc7f7cc4479ab44db65c351948212b84e24269683265b47d4b3b8f819eff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOMNJ0401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda64cb5a61a61a3893302d4b67062fa4b08cd733e60779d63aa8dbc5d3b7290. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NOMNJ0401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c0cdf0ef65f5879b63aaf0015c9fd8d86e75c6a295072f57490e211e669716. 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/NOMNJ0401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8a6fd138bfca2f1076155f0e2c6124e4e519f5406a750211359fe18cb6d1fd. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/NOMNJ0401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944e5912a801af7de407e43c5a24a4f034d258a16dde533301abf0e4ed97e65. 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/NOMNJ0401080.