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 0x4cf14225d66d9b83b63808df4b5ec849f320b38f2d30353521e8a266167cc3a2. 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/23a20c95-a43c-4e53-b6e7-42ad148640f3.json and https://artists.proofprofile.net/proofs/artist/23a20c95-a43c-4e53-b6e7-42ad148640f3.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 0x8d63edc5413dae1373fe1a40243f75ceda6e6f97373a61bb3200137d3f2ceece. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DKZS72100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d372ee602d938d81c8de4b2efbfbf002a7f4a2c070ad1a7d5279e7a0cf364a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DKZS72200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fdc1ab71e4a58ccf64789fa0014441f01a38ec0f8f00b29d4eda6f542720da. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/DKZS72200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25df220e86902d8c3618c3e0587167a5677b0030627214f661bc97db95ca1997. 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/DKZS72200505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bf3a36b6d3cb4c2c36d8094d217e840173f668d9c11c2fbe28ae5b55f9e414. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DKZS72200605.
I Memorize Your Face, 'Cause it Changes all the Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2273bee58549b7e8fff099f3cb7e828af1d94d2443618e2f87ee4675d576f6. 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/DK2DY2400450.
NORDKRAFT - opført og optaget på Aalborg Teater (Baseret på Jakob Ejersbos bestseller)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9960e8f6822f336d7af657303d0794b8b00182f596c6bae0e663ba83d6c83647. 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/DKZS72400705.
Din Idiot (Jeg Skulle Have Været Din Idiot) (feat. Selina Gin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e65a06c010fcaaca210c09b571790ead0dbf3abb9e98638cf4910a78eb1ad. 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/DKADG2101097.
Vi Kender Ikke Hinanden Mere (feat. Selina Gin)
De Uforelskede I Copenhagen Philharmonic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb8f60142f3c3491f4917bbdc8861255c7246f1e64913048544ed19d7a0e7c7. 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/DKADG2200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74ed81f30bc81e6644d54f14b9d7e528648f70bc968f64faae01417c91ba9ac. 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/DKADG2200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139b3040f77df3f0a2167d634e7245cac8eed9200ec6d5382c373dd6ea10472f. 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/DKADG2200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a5725e6a097a1aa2c043081c4b0abae3e2546f1064974a04e5339aaf3f554a. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DKZS72400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090311fd3a491d645fd51676da552b54dc498de1d0c26311cc3440d69e7a4a44. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DKZS72400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d5599e575ea0785087dd88ac0befb74fd9c25ac694c34ebe3f8faaa450277f. 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/DKZS72400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90838d0af7dbb1ee1f26eb44e50ab4ff64f20786903a547fda9573650f7adef. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DKZS72400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156309a281b883b45e93a77b031f248ec28c5241540e6d076283943e36821be3. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DKZS72400701.
Jeg vil løfte alt hvad jeg kan bære - Selinas version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8223db492f308dbef6fcd980e331b94233876c21ae775edf5c6fa737b3b4f2a2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DKZS72400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e65a06c010fcaaca210c09b571790ead0dbf3abb9e98638cf4910a78eb1ad. 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/DKADG2101097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c68b1bd1ad589b8a71c992c371fab28bba204a3206a9e9e45a041f1fdc8ffa. 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/DKADG2101099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07654a5acf93b32443f9cd2b021ab2b19fcac4ae226a54013bcd0fae337f19b9. 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/DKADG2101105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2273bee58549b7e8fff099f3cb7e828af1d94d2443618e2f87ee4675d576f6. 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/DK2DY2400450.
Flyvende Tallerken (Original Podcast Score by Selina Gin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1451d0a94d6c1365b884ec1d214785ba1efe0a376299df3f927858a8667744. 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/QM4TW2284337.