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 0x5777310f1a1a5e0e80ee5bfde7745b1a79a4aeb3730aea652f16d67f468f5080. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e6b702e-24ba-4ea9-b8b7-8649cfc401ad.json and https://artists.proofprofile.net/proofs/artist/3e6b702e-24ba-4ea9-b8b7-8649cfc401ad.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.
Days of Wine and Roses (Solo for Trombone or Euphonium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e24d03bcb7822a5f669e645ff0f3291703b67356a2f68460c64802c4ac46c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NODGN1807050.
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 0xf0cb8dcc463147b121e125200ff3be6118943c77fef51fadedd58ae68df6dd8f. 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/NOX9X3668106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a62d691e792d89d8497771c93a80e5a5a0fe1878c583edf20d737267314414. 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/NOX9X3668113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ecf321217d1cd81d317a58969115113d12f9e6dbc2a94f54c90259d29a9fd. 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/NOX9X3665001.
Ja, Vi Elsker Dette Landet (The National Anthem Of Norway)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d16ed02ddc5915dd2b80d8baca987eb14de53f29aaed1baf9349deb26c72d97. 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/NOX9X3665002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b3a6237181f63da213fae30a7328d14fc587cc3764e47be77cf9040c4d416. 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/NOX9X3665005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299d139107655229d7a2c9e464acb017b6950678aa4508ebb0f15557d2ae81e3. 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/NOX9X3665006.
Bojarenes Inntogsmarsj (The Entry Of The Boyars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fe2f0d40f890c93b0c15bce619e44467f6f0cc75340e96e8cf67c23c1ad55f. 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/NOX9X3665010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a28a6453d35f3b3a3c55e8f206f5355594889cdf95062b3f4411f123d25d8aa. 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/NOX9X3665012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1337b6941f8aad27ebf852714f3554ab631d24f539a4826da60472174603f91f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOX9X3665014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47412f22bc7b2242c53a760c3adefc05a0ed93a4e84b9bb3b0b245fdfaef3c41. 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/NOX9X3665015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5936837ef4007056b64a889f7eeaf43722a3aaa015f5728795507ac35f8f9. 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/NOX9X3665018.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d39fbab03d1551775acf55220a859f90406412492942250612197b6ab3d17a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NODGN2207300.
Celebration for Band - New Music for Concert Band - Demo Tracks 2017-2018
THE STAFF BAND OF THE NORWEGIAN ARMED FORCES
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2f206b733e997c8df613c4c92246530ad5c6236a01645808a942080e2ecd8e. 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/NODGN1704010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5b7b0b17a0fe15b151d4ce21231ef002144fb610e82c12a58c6382b5af038c. 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/NODGN1704020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b1826c0c7190cd8b0be3ab29412c42120b0431b111b55806c54bf81c0c5fd8. 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/NODGN1704050.
Har du fyr? (Give a Light) - Vocal or Instrumental Solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e3881017ee88e5b4e938a70de954c1d806393d75a60fed6d9e438b09e984e8. 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/NODGN1704070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc6f3d10d5e04a15a63fb7153856a6170591d254703970f0b1430204dec0b0. 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/NODGN1704110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc06d2a446388e578da785c75cc8b06e8ee28851198109aeab06f946915d3ecf. 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/NODGN1704250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d4f5f5537b6a48df275b49e7c4818a3fda83d970385b5daec88b8b8e518b9f. 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/NODGN1704320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5685a208841e69a74b56e7cbaede34485a343079a7b18c7a3b91f33dff5c87. 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/NOFMK2001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66210f1fc3542faac3587a047627625eeb0bc78272fcc3774bbd859b6e91072b. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/NOFMK2001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a4d7411f88eeceebe36b9e033bb14aafcc163e05e15658aed62d8ae430f922. 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/NOFMK2001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784f9f46a23a2840ca8afb9c1e8542e8377e2ea27917ddde85f0bda81c93cc5c. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NOFMK2001100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ebe5065d5208b235103d51a9670caf9cc19e5de78971db8baef598b564970. 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/NOFMK2001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c48ff7e8f11c80e3f4ee20ca78a51b5bf3a51ad9892c816a0999bc10685743. 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/NOFMK2001120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed66ec68be9cb052225f9343595aa660f645fa068a314af021d12dbcddc6b16d. 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/NOFMK2001160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f3a21baedcfe2fe5583b9cd7d0b6dbed35c6a649cc28cade995ffaf47abcb7. 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/NOFMK2001180.