Dan I may refer to: Dan I of Wallachia, reigned c. 1383 – 1386 Dan I of Denmark, progenitor of the Danish royal house Dan-I - Disco one hit wonder from 1979
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 0xcbec184a85a1654fbe3f7cc0b5cdd7639a25b9eb3cc133c1bd61b71796697ef1. 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/a26cccfa-c4ac-4b6e-b130-722d35987ebe.json and https://artists.proofprofile.net/proofs/artist/a26cccfa-c4ac-4b6e-b130-722d35987ebe.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 0x43757a8f16d32b2738a4e4460ae57d5c11b3326d7a6e065310ba06a85de24212. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82092505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb982574432de331ca58b3f263e83446c87587a70f27b6a24081f4ba9ec5e8563. 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/USHM82092506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb035f776eb11f2e680144368aea91ecb1ed52f20badf4cb474004aab27551a20. 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/USHM82092507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf716dea7a7e1a9f3f55bf3243fc951f7b09ab4015e107b311678fc8744f32bf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM82092508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95bdd48104ea38f7fea848a72774c19c1778e5ef24e8a0a132210d44de9ba3a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USHM82092509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263a4ba2b827380236349fe7302b24063f2890638eab3f9f2666ebe68c89d659. 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/USHM82092510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff14f4a23484afdf3b8d4ad576e7dcc110e74785092b00540a8657344999ddd6. 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/USHM82092511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76c55c64ef83abb5209e8460f55ce4df2a79d719de7f84d0eaae20ad14cc923. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82092512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797055315c9bae26a963c0ccadc9f66575107c2e53c398e064c8c903c02938f1. 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/USHM82092515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48a2249a9653401d84fd3d6575130cb336bd7ec76cbd4960747891181ca4155. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USHM82092518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec62d6640d77225c274eca8a02307472d890c4f65cf8fb6f30930e8980e97d6d. 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/FR6V80786628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca05d327f190356404581ba7da4d4c60b56e704e6cbc1e9c8bbb7a3f8abe4a1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USL4Q2042601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7393d23e35af2d9fe3e0d9721402f0275f2bf434499ba4fbd1e36c80db59cd5. 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/USL4Q2042607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafaf1a62ae42afc551f0a9a9449340b53621523f9a7bd2ea055376700c3f1ea. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USL4Q2042603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26750fe5d2d00e0017e541cbece8845515a55b6c72f9f2cd2654b2a642ed133. 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/USL4Q2042605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9947a75567574d72682aa010405a62e9c167bca22a9580a873c72a737aadbff2. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USL4Q2042609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3971648105c651afe135852f62dc3bc6bb42837ab6b9e14adfac272bef368aa1. 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/QZHNA2583201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828b2a4aba1495c06ca71dc8fc65b3afb5e0dfd4a9e8bb65f92fdc89734cad7. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USL4Q2042599.