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 0x0da02fd2675b0c44b2280399e922d8398566bb67063f5431470f0c9b2edb3e96. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8deb58d2-78ed-4370-b171-732ccf4615d4.json and https://artists.proofprofile.net/proofs/artist/8deb58d2-78ed-4370-b171-732ccf4615d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tales and Myths of Gothia - New Music for Concert Band - Demo Tracks 2018-2019
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 0x39aa98f629810970f3af6e8950cbf4e62237e83c9205dd38f7657bb6167ebb71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NODGN1807010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2231e170a82dabe9c89a29e695ef2d19dd477ba89d52aa18b3787c40888e3999. 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/NODGN1807090.
Vem kan segla förutan vind (Who can Sail without the Wind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35c64b0c2e42aaacaafbb519609b33a43211c7da5125282f6be54c4ed267a2a. 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/NODGN1807100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5feae8ae079bd5ce5af9d23bd84f1e847b7e8ebbccf6283776da41f9f42977. 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/NODGN1807320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5382e962ce47ca1aa65f01b5e321582c197371bfe18c217d6217bb2ef2f0a17e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NODGN1807040.
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 0x767764918e6549d83df04699efd6cb23a63a7f7a1bd8bd3787c944c2df419abd. 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/NOCJB1801105.
Walkabout - New Music for Concert Band - Demo Tracks 2015-2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f22191670ccacc644186bbc4956a577eeab68ac6e981c72ee124e85413012. 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/NODGN0801180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5cf7ec9882e3f2a26a5d48ecc3071b59a67d160442925febb01ae4928f72b7. 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/NODGN1502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72c7f4a2a1d4e6ee9ea267ba08bb6d065fc7877d6b759257f8f138777b3fae9. 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/NODGN1502150.
Marsj etter Erling Kjøk (March after Erling Kjøk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc769deed1ff763173c4da6302e87f26628a6375044f9cf75631c04c8bfcba88. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NODGN1502180.
Home for Christmas - Vocal or Instrumental Solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4674a19063540abc68b5a52cbb479d268c5f6825f9a8b686367f53ca48455f. 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/NODGN1502360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcf7ca894188b86e11477be825ea9c7b7be9ec797a74f75369b21536588fdf0. 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/NODGN1502370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edf2e59f32fe0240ff25e1e8e40ade05a1624f9da37336f82d7e890be5bd235. 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/NOCJB1901306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3051bd24cdf6c5f9620556a6bf166db6bb59edadc088f3e7fda4df24a76d4197. 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/NOCJB2200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d8fda669dd45f0f5cd755a77e9d799689443c6b1979654c4dbfc5a72770823. 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/NOCJB1801302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb8c8c29e8f1dee5e2af394c4db562c8bccc80c62b82b4ba757c643d750a48. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NOCJB1701408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe076495bf856b75ee6d28d1715a4db7129b12d633b88c8f43f7886815ede4ed. 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/NOCJB1701409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47dc428bf4b36d213f84a7a1f64246d75b62cad7ad7960ed8cb7050a0f9ca9. 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/NOCJB1701411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47d3376149e627e59cac84ee3bb6bef2723139f0b6cf0721c0e0629d898a74b. 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/NOCJB1701420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b594b64b4150836f4fca696940fae1ac4254ecb5d30c9d76a52409d8dc3584. 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/NOCJB1701424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2787d67b3544cb75938e9336de0b091ec8438cb40ed56b2b31107d4776f63ca3. 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/NOCJB1701429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc829c6e796158c5cd441a0765fd59a48345abd766eae700dc73ae6a635879e9f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOCJB1701114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46c7c210cdb4807e8a3f1699c87bb72a95ba4ab78b9caab7a579e14cf8b2d16. 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/NOCJB1901606.
Follebu og Vestre Gausdal Musikkforening
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6789c625bc9a43887974e42e871df1fb282ec077364398236725440ad48f5cb7. 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/NOCJB1901614.
Momentum Sequences - New Music for Concert Band 2023-2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb74de7063040273144cbd09ff4c1a9f9d5f56b5ccb13aa4c5e4ec3dd16c60bd. 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/NODGN2303020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdd76d86121e4d79106e01f319086da16ec2f4894538c08f2ecafa6a3abf73f. 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/NODGN2303300.
Sabor Caribeño - New Music for Concert Band (Demo Tracks 2022-2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7488d2c0194e5374ff91ecb03db22a85436922141d16cd574aa6878db28be3. 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/NODGN2207080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca04acbe3747f3a95accebf9c244bee87ffb8d5c38e6983fd5f73fe94a0db2. 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/NODGN2207090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0b98302aaac9c1d2032ffc885512e696a2e7cfd328316a5d4b512afcc8a9d. 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/NODGN2207140.
Tognum Power - New Music for Concert Band - Demo Tracks 2016-2017
Bruremarsj fra Lødingen (Wedding March from Lødingen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8873ae6c12227bc410009471dea121bb94c5c887931842931faab516eedda9ac. 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/NODGN1606030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314b39a3a49b1b0cfa66cf052c0354e1ed69ce417b24fd5727d51549763582f1. 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/NODGN1606070.
Fra Norske Musikkspill (Norwegian Musical Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ad73c70a3526e0998d8290cf32f1e753f9c9818216b6f680a6f55fd1ef645. 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/NODGN1606120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e626accca4fb4746365b596913cad24dda9f071691d97bd6da307d9b755df94. 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/NODGN1606290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9025f9b2c00499954403339a865d302afc5baca2a48e71da67e3bb959abd52c7. 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/NODGN1606310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc13b7c2820aefaebb671f9c68fade6e851c3a16eff4601e315cffedd3300905. 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/NODGN1606360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc45e4088c599bfc14e650f509ebde85dc42300a5640efcafc049fdf7753d22. 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/NOCJB1901701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f219ecdb1f6f42e2c17f020054a5edf018e342116675aacf62cb95e30406fd. 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/NOCJB1901707.