{"copyright_id":"0x9cbd1a35473dd43faa5a1081d7b5cc84b5d4531cc2bc3b1ce321751ee05a5d28","name":"Danmarks Underholdningsorkester","registered_at":"2026-06-16T17:13:53Z","symbol":"NIM1120165","token_address":"0x7e669c4a7cddd27517eac96b75293e8ac907a58b","type":"artist","uuid":"4f16dec3-2bfb-4a70-b890-4cf07bc5fcd1"}
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbd1a35473dd43faa5a1081d7b5cc84b5d4531cc2bc3b1ce321751ee05a5d28. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f16dec3-2bfb-4a70-b890-4cf07bc5fcd1.json and https://artists.proofprofile.net/proofs/artist/4f16dec3-2bfb-4a70-b890-4cf07bc5fcd1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae6f1d642a0db524bf9f4a18be97f98418f9c44532c66c39f205e670c893341. 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/QM6P42336961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe22b3780b46d6be542b68fb923066dd708362ed6042b89b171ab64d4c35ae0. 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/QM6P42336965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403f08b35283f9e2219ca3749d9746d357b0883102d79f35a8b33d44b13d5add. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6P42336971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1e7732a6a3beb68200c45784f1c9332baf01855c49c3ab5c1602dddef156e9. 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/QM6P42336963.
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 0xbc735c3b7ba37d28be0fd5330e6a2b3251cc42790dfb97694903c7f437cb23de. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM6P42336966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37838386b06c1992a2732ae349479a78ae7e76402aa6cb16118dd0dcd1c56973. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QM6P42336968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8013f91bd955c6c2b4a96a09d3372e3fa1e82f95b941f4bbe9eb44a134e4fa. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QM6P42336969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518ea0465fd6d19f5cfb227890f299559987909d1c75b44c07a8a9a926eed66. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM6P42336985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc5b37bd0d69a8f03b9786fcdfcad6a2d1e004215065d017d70b77e4365b44. 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/DKUM72100634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb22573e8253d4d2fadce80df38d8efd891c1cf816d33fd59a0b3e377ebb0797. 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/DKUM72100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53267454f51aeaf3f38579b409afae48a4a6eb0196456d327189067fc603931a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKUM72100642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4853651bc07b3c04778adcd24ee20f81cf86402306d00f7c6b24e7a852391629. 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/DKUM72100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fc170e4f0baa7b21a492f228e7b04a20e723606839bd319ea81c7964d5a439. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/DKUM72100637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee677b35a97c3f5e9e898add906048f9a82d99448fde40b6ae1e024ea7788a43. 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/DKUM72100641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3fcd0ec99587edb5dcb299f3a2e6b1fc12464158f5f24d333e9580ef33a2a8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKUM72100635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe2957451309d6f6a4ebcfd5a5612d5a6ff5ffc80f0d69eb68f8a52902d2a4. 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/DKUM72100638.