NIA, Nia, or nia may refer to: Nia (given name), including a list of people and fictional characters Nia (fitness), a type of aerobic exercise Nia (charity), a women's aid organisation based in Lo
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 0x57cef39a869f6af4b7f0e69f143ab46a87f430eb22f04dd09f53e9db2e6fa9ce. 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/504e02cf-54fa-46aa-b499-ea2c4518b230.json and https://artists.proofprofile.net/proofs/artist/504e02cf-54fa-46aa-b499-ea2c4518b230.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 0x74abc9e14c11779017621d708d02aef5688eb0422c58a02de4b78d5db3444e90. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR9W12358164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f6cf0f34cb35c71d935eeef2c0857bf9dbb462655404821a80d4ab2871d1d5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:06Z), 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/FR9W12367721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5c854e49bb27c4941826a4043a2d11ee83c7e34004a56c96e3dc14f5fba3f2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR9W12400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b14cbbebe5ca86003a5fed6f24131c89815fe216dd6473c4dad6382cce1b585. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR9W12400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975e057e6cdd0729156b15c788d0d74e0e5f00d0fc5407279933e12583d73ec7. 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/FR9W12400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8b81876b069c8bc6a9d1541caae783cbb3acfa6bf528eb620893e5ab229fa6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR9W12400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2cf3ddae99ecf6be5ad8ba99f221c78af7c0fbe38d819b416bef5782c1e88d. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR9W12400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d61462d5bfa8d9d784c70e0e6e26aaa62f3a49b24e622982527f5896d4dac94. 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/FR9W12400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f34a4baf6ec8f587044b8be0b7b836fd636131d08fb25cb6aebf68b43bb615f. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZWFU2428705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eb3440c8dbbf3d2d6f660595d489b1be52038c0070ea9df5ec99ae4d47318f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:54Z), 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/QZZ7P2415342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b582ab66b3e21661cde251ad4b66efea903c8a11a4eb9fcead0142a73ab321. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:28Z), 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/QMEU32217183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ddadd63c3281dbaf526d3de5603e879a6ccab7491af04e682bfb7fce24adc8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBC2596461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d764b8dad8f2a601fd4920318dde7cd3236cc0f9de939716a6c7db35f6cda01. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFE2517510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d643f896a9335b5c827bcc958c8dc147446edda6091f5eba9dd3b2ce89bee08. 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/QZWFE2517512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9daf582b290c05fcbf298881208715c310e213d28adb30e0f1ff8d41e4303a1. 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/QZWFE2517513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857cf369b499fedccda3c329e17eceaedd415c2b3b67c7d4f8f5c7d840a971f5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFE2517515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce5c0af83e0148987eb05f9a14e29d3da1574ab4c3b56d41f26384ec9c595aa. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZWFE2517516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa733fc33a2990cfaf92dac271c39f59220a58a26ee54c2d3f31e8ed894c1ce10. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFE2517517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90c551712d4d6f1414d4ca98da1814f4327ac52fcf0f393cbab2d43af89976b. 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/QZWFE2517518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21840820842dedb1e4d86b3af72a83ebc16aff6344f8802b11ae5ca6521bb3be. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZWFE2517520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe794fbb4a6921839533e1e9ebeffc6ac5a3575fac6db05a1ddc4cf517425d3db. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZWFE2517521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4ec9cdbd36ae4f44867fe9ea4d5ef26ce5adadd100ddb598c407bbd80d6b1b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWFE2517511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdff0cf31a89af176a9b34c30a5847c432d2b8fd093c3b7f17a582db28d035fa. 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/FRX452385548.