UNB may refer to: Education National University of Benin (French: ) University of Brasília University of New Brunswick University of New Brunswick Fredericton campus (UNBF) University of New B
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 0x5c5df6cfc227d69febe9dffb11a7dc5c96797afedebb6fbdf5722ec0823935e5. 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/9a371c31-5fe9-487d-ad6e-6362cadf4024.json and https://artists.proofprofile.net/proofs/artist/9a371c31-5fe9-487d-ad6e-6362cadf4024.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 0xe02b5cd4412032bc3512ac57a3b1f2bfd5a8210cefef55b254b3014fcecb18fa. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/AUBEC2178222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c31b6b021968f473eee75661200b22aab520fb608308e743eaeb1466c1333b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUBEC1846043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5952d601db50c4d6a6a98cda5c829f9b6fe65673bd53206a144666d18b8a7e84. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AUBEC1903791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e5b96250996a4d7a39a85199862d78bc0b308f9f7b76037adf16492595bd61. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUBEC2084841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9417a78f6358dfa74814e0b104c6f1fb6ba8fa4bda8faeba3857b0e24683b66b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AUBEC2112164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0bd74995320fbfdef3d3625e855ed60b1e2189159464477b6421acbb72795a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUBEC2122404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446aec509b3ab7f56f3734fd4f3f89d89bde1735fd80100e66f97686dfd3374c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUBEC2152606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1882bef028cd8a89a1758dc66e4253cfddf7672f01ba8351f5cfd7d87bea77. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUBEC2179964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12e14fe60bc3208e16866443ecd082a70da7fc69729104e46631e04b2068932. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/AUBEC2184899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ea33ba27d2890d79ea4bf13c2a9d6d7105ec3f5bc5750d7d644344db3a3a64. 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/AUBEC2187326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3049ea181ec4fa20a2fe9032b3cc5cc793646f4f9d3c0127785b03e5dda129a2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUBEC2220722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4a4bc9b3433af64ab2901cf71463148def9020d44301f5a909fc222e1d1d85. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AUBEC2231775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1bebc47f5b382e0c61859da042f039d152318883aa8cc93f866586b7449319. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUBEC2348526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cafbe41e446e39161cb57d5a8a8b88fd73ae1c6ceb51843e9c5c7746ce9557d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:33Z), 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/AUBEC2446327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea27fe54153b55f13b1f57b1fc2eb00af1d0cd9d2cd292ec4c05d5a58648b8a4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/AUBEC2446328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7bedf1864408e5f48a89054914f74fce22cae73df487148856646d9a28bb9b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUBEC2446329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d0195caba320a7b7270afdaca8bc91e37afafa87dfc644e0f29fbabaf907fe. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:52Z), 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/AUBEC2446330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90d913662620eb589a9c3c627e4b4aa39cfcda8ef6c955cb0536123f4927cea. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUBEC2481569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ae58cca103567381278d2c4e0b3c3daa56dca9e27f349d4373cdb4cf05de73. 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/CACWV2511248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe384d546e7ed7d2d6b93b9a7ad0a51c03c514c10cfe13448aaea8005769fb5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAENV2533586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bd61f269fd5bbc4df909056441325a00191e8c78b2ba381089e27cd5d5f0a7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CACWV2587404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1336d8c45222326f02ba90d74c70231d719a308bf32f9d6424e44d604beb1f7. 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/QZDA52234805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff924044e49e0167f4f0dc57ffb79256654c281be1e0fce27bd6d71d793e6af. 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/SE6QE2476605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dc939c555c4f7815c1fdeb33de6451c1fa6be60f98c6f69f6cf08a221753b9. 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/QZYFZ2450830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115db524238cdf8c0ecb757f4d0de2041d1dbc0e1b11f91d6c8669de556c497. 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/GBWUL2221609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b8f681c4c8a7962c3132f57b1d2e612e45be575cb9e2f0f78324bcffe72f30. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTRX2374426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa4a2d8b50c6b01f5dafd54bdd305a2bb742183001a72eb169d004628f2dd6. 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/GBWUL2140765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8974e3066425cbe930b2498d96b4dc3529a9fcd979ab5447aeed593b1eac4ff9. 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/INH412212285.