The term ODT or O.D.T. can refer to several things, among them: Computing .ODT, the word processing file format of OpenDocument, an open standard for electronic documents On-line Debugging Tool,
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 0x424918983c35fa6708f595ddb503455d1da1b325e4f2322d264654886cf91d3c. 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/299c0c62-4589-4c1b-b247-43a438571466.json and https://artists.proofprofile.net/proofs/artist/299c0c62-4589-4c1b-b247-43a438571466.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 0x2a6b51f9c93ef7acfe276e98b65d84e331038d12db8016863e269010d0c90b88. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZES91910375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5af70a36175c2c589e6c67c9647badb8da55a9cef2c4dad47cb7ce3f5bdce57. 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/ITK192000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5835920c260c4f3d99f5ad8a7b5b341dc49c474469d19315c6515d1fa50470. 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/ITK192100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a927322a567e61d22f0dc53d574ea89cc84eba0cd4537f12cafab5e9b14bc3a. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/ITK192100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de39ddf444486ec7c1ab35b3508d403d3a5ae670e9471b4573aeac0cdb01acf. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ITK192100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5835920c260c4f3d99f5ad8a7b5b341dc49c474469d19315c6515d1fa50470. 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/ITK192100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf96c516935ca1b8462c908a16bc08505d4f11a2406918cfeb4acf7cf0d2a45. 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/ITK192100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a1f9f48720e9e3c5cca1d229a30c1a7f780ffff7d8aeb2415f8be889c42216. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/ITK192100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9708708f5cf03c878738f562fd10b013094eeb0c57ea69309ca7870b062659a3. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ITK192100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd662356e58d17c643aa94337802eab30f1b3113c963edea3b21a510af53fb191. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITK192100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224988bf8e14bdacaa009b5fee622a3209f04878d3bd98e58b3fe6ae7b9f14c5. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/ITK192200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00f11818c7426c10410d801213d77dd1ddf4bec953802341f4d275b69fffb1e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ITK192200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46110ba65add0d5635eddb9feeaf8733de5e3bf440fca1f09223254ef4ab4bb. 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/ITK192200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8bfe681c43a613762a0cba1439d0910c0d1381e7084a1252bd3e8199f76eb5. 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/ITMDU2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907232bf0c3d124224490abeea3191f2842a52a7c96f8a8e4f49563830e59a3. 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/US38Y2418721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35d6a80903defeb30125488161649e6d225eb1e3180755791a3f550bf4eab34. 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/US38Y2421985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35d8b00245c3cfa3d98dc76f2c1ef600d217cb4ca028ea44971c20e72745578. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/US38Y2432742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d7cccdd4468e55398c0cd392208ce29c15f08a3b6589582b7ca6b8b3540473. 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/IT1O72501294.