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 0x4726b379f00cac59d814a3f4b1ea86d7839b5379cabb84ca1ce14e1045bbcd23. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a839813-c6fc-49c9-bbc7-23d57fb2ef43.json and https://artists.proofprofile.net/proofs/artist/6a839813-c6fc-49c9-bbc7-23d57fb2ef43.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 0xdf219cab996437a8f4a6b21f8210ac6a1c63b19603d40d6af88605f2e1051b7a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NZFC01100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d58e5f991995821e0f59149f90eb077a7fc93b851da5d1d176cd079f8ccde. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NZFC01100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a796b101ffbc06acc81c3c4260ee2d8c085e61da95df59c577768bea3d91326. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NZFC01100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04d293f2d44acaf0dd71f04a734c845388c3427388361d77a61d1fc85766820. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NZRI11201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac8b93cea847aee44b57b4f664f2766e03fe960d693c3ada672fcb8cc80d1a1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NZFC01400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf012b7449982251fb446523f0889ef5332c155e6f8d4bb5d66bb10491148b935. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/NZFC01400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65f3501c9e37981d65a4a8b729aac2e7ab5f41618930e91a9224aa94cf88c63. 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/NZFC01400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0fc77a72bcfdf77307fef8af86889bb0a9c1ae3fc6c526fd37d2af69711fa5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NZOG12000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d4f13f08b1322f5b2c06390a511828668df1ea7c80a05c694d12be8338fdbd. 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/NZOG12000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19528cda1895be8d0790054b459424a05901bbe179a1a305e53fb5e9287ad96. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NZOG12000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bdfdfeec627c39ff851244001c6d8c32e7c26c06f62f5bcc8dc15501f300d9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NZFC02100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375ae19651b49b0ae323ba09af805c3f3c1b898e4549407e9609ed68b2bb5b24. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NZAM02201422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e56aa79e89ae409c1fe779bddd71377756bee6cbb1e859c0dd12ec68a174d0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NZFC02300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f2e706577eeeaaad1b2dfcd14ebecea57128f1a0b8c7425e0ae4ac7e8622f. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/NZFC02200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741b126983015140717614ce4c085775c21669544279bcd518365ebcd27f4154. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/NZAM02300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4de40b4a63513d51924e37ada0a8f5320e6fae23551ffc571b2135b7a9e002. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/NZFC02300003.
Ko Te Hekenga O Te Tohora (Whales' Trails in Te Reo)
Ko te Hekenga o te Tohora (Whales' Trails in te reo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65982ef2cc7017f174156661608ea09fbab69ca0d4dd45cb67a7de6b7db83c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NZFC02300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2fb4a4fb4789c5f5aaa3e4268a52c30aec592e05176e0a72c78ec8981164ab. 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/NZFC02400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afab65fdfa750a11226c4721416d07c7de3396011850b5dbab85ef316bab38c. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/NZFC02400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf3e5c1122668d86d4692158599a8da9f8dbab7a6383d6426b6279fcd85aa81. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/NZFC02400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925741774422fa15e27775c253fe7785e844e605c9090483a1ad742c2176322d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/NZFC02400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e310cd0e4f828c7c272e78f9da2911d96ee324b24b3b3e19c2fb6ad8133991. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NZFC02500012.