NB, Nb, or nb may refer to: Arts and entertainment N.B. (album), an album by Natasha Bedingfield NB (TV programme), a Scottish arts television programme that aired 1989–1997 Businesses NB Global
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 0xa5f6171aec31da37df5481531bcd09eab2eafa2eeafb2294ec44c7e89439d5e4. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e55ebc7-6560-4766-b604-516008720d1d.json and https://artists.proofprofile.net/proofs/artist/7e55ebc7-6560-4766-b604-516008720d1d.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 0xfe1c40642342d23d3959050ace566592efb883eca140c865cef5c5ec9ff66754. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP2436595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc19fbf50c27d3a3836afcfa5c12a92fc4b8866c8d3aa38babf72ed8924deb28. 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/GBLFP2436596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f921af8ac2a2116f55957967f3fdac3c3acf5d06315af4ff0c7d0ab1d63cfc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP2436598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b26e1eb1849393db09a931ec9c4112ebb4f94b9d31fe802d8bf130687fb4989. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBLFP2436599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8192a0a3c5eeae7b1a14eb6084eb2814c8f16064c5a94572cd6ad1a2093161e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2436600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710003025c34f0729b1d9527dc7abf97f130f60c11ae458a2903528d94ab5e43. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBLFP2436601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc3c2df4a09e9b01092f761647f49274614892d1591dccb5a6863f7185f5835. 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/GBLFP2436602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d41cb17757ae572cd5f172a7e338d722d88fb536f41fabe33173105d8ccd5. 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/GBLFP2436603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6f0592fdc2fde4aa4551167abd057ae857e23a56825f83501bd6f1c2b422e7. 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/GBLFP2436604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba9b6310cfe7ed7842ee757344e93c7468da8758ca38b8e139c1c92829a3b4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2436605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326e51de1855d361a1b38d4dbb10db7bf1456eab166623ef40870efd6087e431. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GBLFP2436606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b33033202007b8f92a1cd41e5f232bbc61851d18db05be953172c304d0cbbc. 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/GBLFP2436607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa458d68db876ca6f4e35724dc43e77ed2a61a7c410c0fe9614e2d81763e95b4e. 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/GBLFP2436608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3db1025c696b86009ebfb1aa93ff2c642c4cd9d072ccbbe4233cb8f6b6dea7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBLFP2436609.