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 0x7a6b51ac968f54609c3da5b8d56da877bc9a5f97efde617fd1cb5bf12c006093. 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/71c8c316-209e-4db4-9387-7ce0d1fac213.json and https://artists.proofprofile.net/proofs/artist/71c8c316-209e-4db4-9387-7ce0d1fac213.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 0x82328ac535458d39c3c372a086af802185311008a4d092a1a393746d304f7f7e. 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/DKG7E2300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4163e0537b8c88b13e2c1def8d0748c7f681614caee4d37656ca8cca7da4b17. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKG7E2300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4163e0537b8c88b13e2c1def8d0748c7f681614caee4d37656ca8cca7da4b17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKG7E2300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed2041ef38375a1dad727fb63b83ebc0b04feac417cbbadbbfd61088b80d79f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DK9G52300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc20dde38b6186a72e9da58e400d8907253fa8391fd76f81d67129709dd88c6. 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/DK9G52300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36438fbe19efeab20753db206d7ee3e1a8273e07047539b03f39dfe37136586. 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/DK9G52300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cad28e505333bcbc72d43a0f8489fa6e00def8a711d7b1de3ebcd83d3e3648. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DK9G52100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7199ae679c62a3d26003c59b10af905a15fa9198a328d16ce5dc96ebd09592. 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/DK9G52100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8366aff48b5f1cb092325cafa6509f33eb29281a8709a2c4a760bb82e7eba7fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DK9G52100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f81b69b4c0860a24f6b47645b67b1965dac2f115fdbb2a473cf650af1bddc7c. 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/DK9G52100307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf697633746ff2efdbd5331cdc08b059c212b1eda88b0b51635f97f27f90761. 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/DK9G52100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0a79200f2d54c8b61479a49a4b95763fe1f0b503bdaaed64c13ca0ad86f15b. 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/DK9G52100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11562efe19066b8401ddb483cc7fc1163305756ffd5cc8cdf52aea48b99628b1. 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/DK9G52100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4269dd33beb4bcfea6e05c99faea821f638aa3c71e90c8361b3250d29b6b1713. 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/DK9G52100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652505f648ebe5876a32bde9e6683b06c35d9f23bf6e2ae86d88b05b55705612. 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/DK9G52100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f81551012d2d31a7f33c631005ff99074cfbae24b26b1c0c57f6a2054b4345. 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/DK9G52100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2539ebc95be61c794de92f654690abf6cc9a21585feef0c5916ab9281d422747. 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/DK9G52100109.
En Skærslippers Forårssang - The Knife Grinder's Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1689f6e59d345eb49a1b6704e3f1361905738b6aa87aee4a76e0dfd42a97ab27. 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/USA560726623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43442c11c05f8b1009d73844934c8b541c2223fe38f33696dae4362ee90b8b79. 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/USA560726634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdae0adeaba394d3bd096e8785107965894d4d6ca00a89527f0f766ccb27cf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42527539.