Dalton may refer to: Science Dalton (crater), a lunar crater Dalton (program), chemistry software Dalton (unit) (Da), a.k.a. unified atomic mass unit John Dalton, chemist, physicist and meteor
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 0x8124041ab587914e50cf21a2e37312e04a04d90b910802ed268cab5809f2eca6. 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/31358ec4-65ee-4983-81a8-73e2311e1918.json and https://artists.proofprofile.net/proofs/artist/31358ec4-65ee-4983-81a8-73e2311e1918.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 0x875656aad25b7e515d60f0bc2850bfd85601b64cf465e0c29c0adb84557c4097. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKUM70700592.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860e04fe626aae7d6ee13356659fc323c05fcdb89c69d8be573d3a15b84d136. 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/DKUM70700599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd91eb65640b03f1b59ed386453d896e4b5fc466224c09066de1d80d31438ed9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM70700598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8771119cf18b7e79ae0da0d0d59a7189ab1562aa08d6716b00e6aa8a43e7255f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKUM70700597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552a83080e558c52e46f309baee1b6825860776a5c1f3bb99d801bbc52ddd32b. 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/DKUM70700590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eace4dd23c9eff4d885cc7a435b883ace5269c52e5d86e9bd171d72a56776f9. 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/DKUM70700596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa575f2e7b9fb19d621241a2009a06347aed016d2027a41be1879e1656692740b. 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/DKUM70700589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6866efab1fb46cd6621feb3b71191e1f170540c0f5df55d8d4a0328f7b5bbc4. 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/DKUM70700594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c6ab9d298e8495376961ff46f20a8d5c0bc3092bc712994ffcf7e65fe68c3d. 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/DKUM70700595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdbfb8efb8231bdcd9c498a0c068a766156ff24edaa5587b2ee2c565c56ce2d. 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/DKUM70700600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6521e25f3e5397ac8a3bb8fd8a3e0c3edd098e44bcb48f30954e772c3b83dca4. 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/DKUM70700591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfabcd685bb568d5dda7e4902c5c072e89b74dbefe871fa8e16a24da6f5d6e0. 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/DKUM70700593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cd5ac55122406438e8b21296000c9441261a0c944433afb5b109a0ba88a311. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DKBV70906110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7268c11c55d116a1b366d37c4b63fd4bd545e8c47a4cf1a8766d625d64e5e5a1. 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/DKBV70906101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f28f5c202a676807a6d7708172b22f119b283c18b350fec555941dbf7e59c6. 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/ITG372000175.