BZB or bzb may refer to: BZB, the IATA code for Bazaruto Island Airport, Bazaruto Archipelago, Mozambique BZB, the Indian Railways station code for Burra Bazar railway station, Kolkata, India bzb,
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 0x8344f5dd9caaa8ea08376f4a71af42a508c17a921de81a15ed08a57d34cb231c. 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/18d0c7e8-09c2-4117-a1f5-39ee9a0189ca.json and https://artists.proofprofile.net/proofs/artist/18d0c7e8-09c2-4117-a1f5-39ee9a0189ca.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 0xfe4b9d995199728ccd98b2f675ebc301fbab6524c319770f226d69449d937418. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/NLD441600616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2f8a204a8b8b02b1921a1eb0ab975891250ef0286aaf8a1d506f3489bf13a6. 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/NLD441600618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87cd3e34c24ced5c8452b91f85dc225675dd86f50bbb0e4a2388a22335e9e3a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/NLD441600626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886abd7ccefc9bc64a0f39fc631d06bf46a0c630f291d40a17efd425d94a0610. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/NLD441600633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07c5db120c8cf3577a40a37eb2ca75e9c7be9fe96f73bdecbf8e9878f70bb93. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLD441600639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3493f8e89328dc48d9b7baf3843882b2214e8415196a3ab5b894c4867059612. 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/NLD441600640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c393e16f5bfdd7ff18109a28da48c3918698ce4667b0ecd7a478c669b422411. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLD441600641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14f8969cf59fcc89e3bb27c4e986d93b77e234658c48a91ae47b2c383cd97a3. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/NLD441600572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f775dacdfb44a9640ca0894fd46d0ca29ceba1c3d132bfd915fdc17edc0e42. 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/NLD441600574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c5628a1a30993614ced168a851fefb9456d0add728b2765c2b1f0570d11ec9. 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/NLD441600579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa917086924041aa4098bddd025deb602640f9b378995ec791d699613d4b7ae7e. 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/NLD441600655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf929ac4c2c27f8f4cf2d8db6a6713b1802f470eea72fa3496e1553bc0eeb689b. 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/NLD441600657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc00f4dffcf1e4c2451c5731e00f8d2e89ccff90160b1035092e8fb7a8cb43b. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/NLD441600658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b35b92f2bacfede8bbe5283f7abc9342d2108da107018785c43c27b2b28c4d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/NLD441600659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50d9f9894262a91e35b20c98ad0bbf62358028c752d388e9c64602761c9d682. 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/NLD441600663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c3d20c0f448eb18c81d6d5c82a0ca37df42625e78dfd8466e2f376cab767d1. 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/NLD441600664.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76c0890002e4f1099d20b370d4656d2ec615550412b81755099cdd0ba9f7d2a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/NLD441600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371305818760ffe42193483e2089e3bbdbec65466b1d31fcf57b1c849738942f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLD441600676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9779a1f295ff8dd2c89a927335096a7a34158e2d56b8d4dbdcc79b44afce10f2. 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/NLD441600677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88550e8d66d1d0d71a5f3353476e399591c2ac42838728ee18fd9860f7f83297. 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/NLD441600682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aedff48c83b205b6967d9c1daddfb104bb28e3329bf8f2b98697356b612541. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/NLD441600683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ae7c9812ad3bd2864a4b24223ab7a8838a37c490987f9383edd427b189e90b. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/NLD441600686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d31436a4df4ec02a3394b41408ccbda5f5239e17874920a72dda376f33e51e2. 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/NLE870816201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802653e077327d3cc3f14a232e10e49483b0d82e142d8418c5c3401bdd85bf13. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/NLD441209202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5203c100e77222d8df075b908083114922f2e0ca4fea38e8e29bc4de2d9429a3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NLD441209203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a5dbc00122d790c303bfc21ce922360072e5bb21bdd102a71e30a01bb235b9. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/NLD441209204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398ceda4e3f3b9aa52f2304003744498296bac9c92c7d9df448611564b5c8a79. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/NLD441209205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae5216fc809c829bb5b318a6208a4b70932fd98eb5a6f0061df79659b526d88. 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/NLD441209207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0aca833d496ab4b7c4720299878e3ae41f0017ebe7c3c0598ec756dbe7d859. 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/NLD441209210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07e238f20667e9db70c72a1c760c5ead89a60b337c5ff7c5d507ac36427e0d4. 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/NLD441600548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd978cd32364aa4a0df142db1b0291fa0f55da65549b337742b4eaad0fd87cab2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/NLD441600549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e25a2490791fc77fe13f3ef129dc816dfb28258bb74a2bc80f3c1af57d1808. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/NLD441600551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c2d050305c57569d11c2b8141aaef380de4769bbb4bcb3059ee851c6fe3a8a. 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/NLD441800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b7e9432484ec93a512e96694ca3e619c2f8712f083aa5e5178d6ca836bcfa1. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/NLD441800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb0fec8c41cbd7b345e790bc33b6781df270533a84a0b6cdf05aafd3e816488. 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/NLD441800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2675c21c8b1f23e2e367ded4bbc2df6c64c8ee289db395d6b3711d7075b88fc3. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/NLD441800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ba75dda970d47ca3efa737a02409989c61cb6e57d5b34c1523da5981828c21. 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/NLD441800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890c02480769b42ac023275496307f46deb6a94ce56127dee9c4002088aefcd1. 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/NLH970900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9b82826f2781d72bdaccc86f182be8d31f12f804681fa0cdad9ab90d06209. 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/NLE872117101.