NR, Nr or nr may refer to: Arts and media National Review, an American political magazine Newsround, a British news programme for children Nollywood Reinvented, a Nigerian cinematic review website
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 0xbd6234a3c5b07de66ce684df94fcdaa789ea93b2abb9edc85b4856bb97fee8b8. 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/75c6597c-b802-42ae-928a-1a28f9c39ab7.json and https://artists.proofprofile.net/proofs/artist/75c6597c-b802-42ae-928a-1a28f9c39ab7.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 0x2a6789edd219d7861a0d090c4d97932fe14b50f0576d203339831c625a320f9b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/CA5KR1831030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a96e54d47571e07bf394cc7b2501c38a63463a7489fb11c8eacb31bde644a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR1831028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e193d432955fb37ecaee09f07a453c74e47b403bf52e1e6d840196fcb059b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/CA5KR1831026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc499efdb5421b1512fab209a61d563dd91225080dd5d9ae502c588762a568. 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/CA5KR1831029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb758d0053374e8d793cf69cce9a1c3d1697269e6dd9b066b2a7863fb083c3e. 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/CA5KR1576010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fa388133c52186f98740d1c0895b6f77983bd756621f38155c3a8b03df648f. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZ85M1954884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc753c12dd37599bb4824125055246f248acbe0ec5b8bd06695d440918f0403. 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/CA5KR1967701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd735d13c2329af081dbb0a46bc6ca694f926d6d807b6c98e0659057ae0dd5a92. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHZ42103249.
A Party 2 Remember: The Afterparty (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb81b757b185c6b520c2418205de01924b7018ed76fe3e990323ebd3c330791. 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/QZHZ52098689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe69e2b18ed64f976e9d1061c88f775af64e8ce5a54d8d316702c4c8542d4699. 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/QZHZ52098691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa90a89253f2591e6f8d3b3d7b408ee7dee14d6917b52838b9f0b6a1be06e97. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZHZ42103250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401db249a9d7b3ffa69f5551d410414b00444c3ac579e608495c3a5142086d70. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHZ52098692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b488bc90820441da4ef8e0846fad41e2c90d2c29e92deb63e1f94430b11b8e. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CA5KR1967700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa148a75e8a34307fa7ab4c1444c05b74cb76c1424e6486666213468598200ae2. 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/CA5KR1966545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c019abdbb1fb08a2dee4473123e0cd6ae11a8ea6f7e2bbbb1c5b738b9a4df03. 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/QZNJY2155378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b05b5b3b362e8185e13f7083bed325ede15b4ed156bea71c2465828f32b65aa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJY2155379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386314cf9ac3843679866fd47b5d78b5acc460a1976f3cfb99b56f212a56fa68. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZNJY2155380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2578d606375086b1e7cbbcc83731fab0be531672914a3a115847cee5d18ab7ad. 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/QZHZ52098693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21586db466329fc478256166ec55837b16d1301d74d892403de40383430111c. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZNJY2155381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca773b4e974efe8b69e7613cd3a113664a5f43ef802a5666ebc832b298880d2. 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/QZHZ52098697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c54f7dfa39c2f2a33b580d120d55906e3f353651f67a25be40a90e9b118e1. 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/QZHZ42293391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790e9cd9546d92fa4a29e9444354aaaaefa081d7d45918f673471542f881e56a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/QZW9M2202563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51437f8883a6bacd74937c7f1887fb9d785dafe58d6e80dad85b7f33191ecc0a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZAKB2431595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df51ab44b10aeba4a3f0adbc35fcb961503a798eb16bd3886771a6167290738. 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/QZAKB2428669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21210b92fc58756849ab7ff4a983c03ff774b27dfb2ea4f4c8fee330ce49642b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZAKB2432283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad62d5d40218f7e022e948ae0bacc71d3fd9cf61b23e84b3568d46e51cc3e28b. 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/QZAKB2432262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51437f8883a6bacd74937c7f1887fb9d785dafe58d6e80dad85b7f33191ecc0a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZAKB2431595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b73d408ffc4b2f4cc317efd5ca4cdd4e2f7162be702f51f8060dac40531325. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/QZAKB2432256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df51ab44b10aeba4a3f0adbc35fcb961503a798eb16bd3886771a6167290738. 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/QZAKB2428669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00975559dcc28ca70de896273bdc2904359eaabe4d180061afeb4c5d30586b48. 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/QZAKB2432266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577d781d704e484d3bbdb074b52da59d769bf438005dde337547762e364b8fb5. 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/QZAKB2432268.