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 0x6dd2f6ce3744b5c6acfb328054e7ad244a63513651146f4a5214843a270a42a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ac6b01b-870d-4fbb-8cf9-103241bd4829.json and https://artists.proofprofile.net/proofs/artist/4ac6b01b-870d-4fbb-8cf9-103241bd4829.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 0x62c6f673615ba8d93ff815efbe3a86f93dea7dfa0c2d43e00948b4dd486d119f. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/DKADG2000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f47aae45d350a27a65bab66bed6a6f560f8629cee4dce1745625a63f5280bb. 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/DKADG2000354.
Brænd mig som en feber (fra TV2 serien Hvide Sande)
Katinka Bjerregaard Synger Toppen Af Poppen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5b496c4f7fb040b094570a916d259d095880ff1abbcaef5ffbfec768e632d7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DKADG2100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c674f9a93aa596ca039a4f04249a2373da5b654613e624d8949c860de4f97. 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/DKADG2100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2f99074cbb43432ce21d54e9966a4111ff2fcfbf8efdf3ee4d7af39828405b. 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/DKBR22103402.
Toppen Af Poppen 2021 Synger Mathilde Falch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ac6ed9bd4e0d2b352976f7c85f79716fb60ff91bcace568a54e44c994d472. 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/DKADG2100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e2d4a50d82bc9e87a575d5512cef040e91789a477b593357f16d8a802d8e0. 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/DKUM71700511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e2d4a50d82bc9e87a575d5512cef040e91789a477b593357f16d8a802d8e0. 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/DKUM71700511.
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.
Toppen Af Poppen 2021 Synger Simon Kvamm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e026732f746eaa782ab7686660c6dc701f060f7bcebd4e33b052abf1b4dff8. 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/DKADG2100716.
Toppen Af Poppen 2021 Synger Alex Vargas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f86132feb06598bee4400cf55d305aa965ddf83bb91d633470e1fbbc47993d. 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/DKADG2100731.
Toppen Af Poppen 2021 Synger Malte Ebert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c674f9a93aa596ca039a4f04249a2373da5b654613e624d8949c860de4f97. 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/DKADG2100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca54128f51de110acb617122168fcfb1138697bf03a7291f00d9e8dc7f188e2. 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/DKADG2100695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e800ab61d6b68ff8b3fce3baa08528abde12f09c3053fc57e3322c7345bf109. 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/DKBR21501802.
Toppen Af Poppen 2021 Synger Maria Bramsen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5b496c4f7fb040b094570a916d259d095880ff1abbcaef5ffbfec768e632d7. 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/DKADG2100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a482ee10ea43f58668467714616513f53d30ac9177b24a253a079311e22610. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QM6P42336960.
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 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 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.