And or AND may refer to: Logic, grammar and computing Conjunction, connecting two words, phrases, or clauses Logical conjunction in mathematical logic, notated as "∧", "⋅", "&", or simple juxtaposi
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 0x835bc6d36a223afa3d4760d4c240b97b23cb17c9d716413854160a57fe8d12f4. 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/3d23977a-a1a7-4545-b34d-581c7d2ba4b7.json and https://artists.proofprofile.net/proofs/artist/3d23977a-a1a7-4545-b34d-581c7d2ba4b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Walkin With Benny Harry and Ben Remastered
The Artie Shaw Song Book Collection Remastered
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 0x7a7eae1294a4cbe6b6ec6a315018091c49e337df45f158e91c42529ae88c271b. 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/DEMM41401178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb119b5d7e83ad3d59b67f3c4e2cebb64062727985cda438423a6b4aefdbca. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBLV62025433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cdc64325f20ca23746e1bb3bf426a65727ceb398730489be420eeb07307e1b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NLCK42340975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b160e5e8806d8578cb59150ca009a454befeb74595e5d1afa3f2c23c18b9b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DGA0S2476441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7d12ac4a8378036b1cad937e0391982f4db4d3902151074d39065a25ec5f91. 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/DEH742505911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19177ce70023d9b8a13e52ee5be24a583e0e1fe32044bcf0ca194208d166859e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/DEH742505912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4edd1348e95b991b770ab228d3a5eea56d14e21095cb86c6861690ef13554b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEH742505913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fd1cf87e15b895e7714819e6114b8584d6dd37a6c99866ea3792000f46a7e1. 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/NLCK42513237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8714196fa8a2d1d858c1183f7ce2bb22d91c498f4b3782b58a668e6343436ffa. 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/DGA052513649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce90764c3bbf5eabcff1dec1444390b5a244113b1dd544e2a3abe285f91f37. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DGA052513650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68b3f8475da395197ecc659565ad03e32047e520b667d406801998061ae948b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DGA052513651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd755c3bbce993facb88f520dd8281968e6f9e97c70fc73e5c63bd47d854d038c. 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/DEH742418074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c8b087c010fd313c0797b9c4cf73ef7039689bf719717f23f5df68461bce7. 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/CA5KR2324094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b160e5e8806d8578cb59150ca009a454befeb74595e5d1afa3f2c23c18b9b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DGA0S2476441.