DND or Dnd may refer to: Arts and entertainment Dungeons & Dragons, a role-playing game dnd (1975 video game), a role-playing game DND (video game), a role-playing video game, 1977 "DND" (song),
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 0x71cefb2b16e0b5b7f344552d88273b49efd6c0b6526e0a12c21b29bc05fe4cab. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b4b8854-9c40-409a-88d0-a2b188ec3bfe.json and https://artists.proofprofile.net/proofs/artist/3b4b8854-9c40-409a-88d0-a2b188ec3bfe.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 0x5496a14915fecf20bdc6e2008da609c74dc3f127321d4fe080dd189b5eb35b56. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTVM2272786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb591cd20e4ddbe7cbc9e6d33c4955820bc71200f9905511b508ad4abf6cf6289. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZTVM2272787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadf3083152b941232c634fb17550ab2e469b0aa8938a0eae76d6a5fa83f5aa1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTVM2272788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d20f0060eea58b14bcc17f8ec8a13093e3797370dc80081a6ecee5936149358. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZTVM2272789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e185d42531e365607253661ad9d57fa0edb8db6b64afd40eb6ee7f553c2dc60. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZNJX2295823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48da2c817481934dd9cc85b16f4a2fb7066a736c4c75a9a7afa269bbf7b96c7b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTVM2272790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c32eb05a549755176e7f30d33f3ec0ff3aec254ee87edd07b46af504a53f4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZTVM2272791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce861f809b28dd0e8c76c746aa57ec0854b4ffe26c59fce16d947dd0f78e8b18. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTVM2272792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bab05f7d6ee0d30a0a1d0e2db0d7e173cef83fd20c06aebc2c37441fa6c4bc. 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/QZTVM2272793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb796aea52f708358080ded87d9ca399477c74771e592fdf776e7c8a821a1faa4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJX2295939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3440ac9cf6740901b015d884f33b8b4adb85f27246bc1ca6419349f17b7a08. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTVM2272794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37c0ba2a338263fdd35ee42abfaba51f1921895a4dc875566bfad2ffd703af. 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/QZTVM2272236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d83f0dde1c33f2029f00f45bd2292df8f6ea8f77c3e7ec3703239bdae4ca0e4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZTVM2272795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab21007f9b604168513335546995d7b821737e0b5576971b535862a3be45acd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTVM2272796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb796aea52f708358080ded87d9ca399477c74771e592fdf776e7c8a821a1faa4. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNJX2295939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e185d42531e365607253661ad9d57fa0edb8db6b64afd40eb6ee7f553c2dc60. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNJX2295823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37c0ba2a338263fdd35ee42abfaba51f1921895a4dc875566bfad2ffd703af. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTVM2272236.