Douglas may refer to: People Douglas (given name) Douglas (surname) Animals Douglas (parrot), macaw that starred as the parrot Rosalinda in Pippi Longstocking Douglas the camel, a camel in the C
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 0x44bf0920af58e9411edb85770c920ea6251ff608282063ce6fba6fa2c57712cd. 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/6a46f70f-1617-43c2-90a4-b55eb6780483.json and https://artists.proofprofile.net/proofs/artist/6a46f70f-1617-43c2-90a4-b55eb6780483.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 0x191f8cd55b2d2ad0e878a1581e34f707fcab4fe508609d409d386a3adf5fd063. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/CLPP20800155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c7e238684398c3c75edad88b706b559b67c840d01b680b00a5e1355b2d3c1b. 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/CLA229900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a11948c6333bbe550b1819cfcb93c1cbbb7572d68c3871902016e73dc776b8e. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/CLA229900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8070e0af7a84c509d0276948743b43ee84b7815adc761fcb054c4f1e9b68bf2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:36:15Z), 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/QM4TW2380983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2920ce76c8c96580b25df0dbc26f3a6c5582a3b49b63d5c5e61f18024041c6da. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CLA220200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aea4d09de245a128c4c739e1214aec0f761256e166e2eddd464715c6bd64f88. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CLA220200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691b3f5d460c010675ac004fe9df67fe9573d29293cc5a8352e2612816fbf3f5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CLA220200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e061b2bdf8f7bbaca90c3931355afe61d6fde81e25f779c042c376e530037f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CLA220200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97a925ef09da9b4102c537ea6ef569dc6fc4c4502c86f647853942ea8571df6. 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/CLA220200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325d518b8e84d33568e1b83712254e1118b57ad3274860ce5282e7dff817d547. 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/CLA220200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38053a958086a847276d746717e2065d9602a9428bbf1aff9118ac6f76a9b064. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA62439727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc8235a051943b288c9c6b2cb0eebd7475af95fcb9dddcdf92a7a47880cbf2f. 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/FR2X42306707.