thumb|Jan Bang performing at Kongshaugfestivalen 2019 Jan Bang (born 21 August 1968) is a Norwegian musician and record producer who has worked with Morten Harket, Sidsel Endresen, David Sylvian, Nils
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 0xb0b23e224ef403f88e961360f211f85ad6f07f199891cc8fb5168cc5365ecbc5. 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/e0360e9a-cc1c-4b1a-9ecd-70dc21664e2d.json and https://artists.proofprofile.net/proofs/artist/e0360e9a-cc1c-4b1a-9ecd-70dc21664e2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Uncommon Deities (feat. Sidsel Endresen & Arve Henriksen)
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 0xa183f6b0cbc8d5c6abac8ebceb9ccc7a4342063c3b88d36d7f3087d93d30d66c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NOWAJ1918030.
Legion (Compass Joint Main Remix Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6ffd617645093e4cb867e5695416edb2f9ad4fb789b1b7129f7095198029ec. 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/DEB331441402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27d84a8f51942042c3723e25f570e80209bd1cf2bdb30e06168434190c27c1c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEB331441401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d706fabd7e6e4a6e366a02eac580ee3a9aa75776a80afaa7954db529b52416f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEB331441504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51421720cc4bcd1491fdfd8807c8b97b8557e884570c9e65feb846ec0be2ee89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEB331441405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8830b736a5a2de29836b6a64c3b5f1af0cb47b9e2440f3f8fed13bfc070ede8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEB331441404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6413dfbe2a07ae8ab6b2ce79ced1f04773f50546550be91a76a6942190963528. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEB331441408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e816578da9f2d4b0bf95be84f88b0f4f1f95fb3ee3364752fd34884483d581b. 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/DEB331441403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75842ecc07ac16e6d5fd71f139c57a3183b00155e7e21e896503b18a3e6e0aa7. 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/DEB331441406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d771ae6910d3b2d297928bf1f462715c60e56319f3027494861679f6fb2e9c8. 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/DEB331441407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca98669f98aa1d3fe9f6d378b4bdc65da5c06146023781915fd0ea3e5e647584. 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/DEB331441503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dc40185f7141825395d30cfdc36afd0b526a2de5f0652b7688e568745e67fb. 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/DEB331441501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae670db7bc3027baefe2e1e2c9434522c369fbdbd7bffc863b8da4de8a9471. 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/DEB331441507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37ffe758b7a3ba2a29b5d13d3b7f61eb6030a4c12026b9c566d1ed72a587913. 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/DEB331441502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02814d925ea0be363f6d3b404193ad99a78ab74f04124f106878700694812435. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEB331441505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107abe75c8892b76b5afdfe46dc86336539cee471c1b3f4555b51f43ac2b282b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DEB331441506.
Fahrt ins Blaue - Relaxin in the Spirit of Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1ac115def6fac40c344ddc8564c219ff71f07e3ee07817a26701277fea906. 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/DEA891700301.