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 0x34a8f6b0f5a35c053f33f199faef85d5d666d8c955d488db9756179624f6ddc4. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/343a9237-7528-49ce-aaf4-9dd36216de06.json and https://artists.proofprofile.net/proofs/artist/343a9237-7528-49ce-aaf4-9dd36216de06.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 0xec234b0ef191afef8c8a25cccd85a0d091fbed3b47e881db166d40f62a27bda9. 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/GBSMU7990357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe52371cefaaf9fcaa0649ead805401afc83e623e422526205264304ade11faf. 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/GBSMU7990362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77aae1f17f5dd90c33c9c412403b7af15fceef3a734588e45338eeb5b14b510b. 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/GBSMU7990363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c29307bfb21bca01c6f1ccf7bc8d6a65cb9c68fdb4edbd4c65ca3965c4fb9e. 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/GBSMU7990367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f740d054685293c1abf0cbf9229cf299a37f8d7da96076b38e4fea0b07c333. 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/GBSMU5951989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523482975f49b9f7e01ab379e1179b2a03cbbe8996883ff2a71946b330d503a6. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBSMU5951990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67f3eda118af0504337115324ffc0d82632dc3f05d0d029203ff8bd1f3c768e. 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/GBSMU5951996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1719bb11e51e000961679385c1876f9081c2b7216f886e2e9fda97aed3a57e1. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBSMU5951997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aa2c3f29b5e38bedfebb5409cdbd13e49a3f134805c9669db0a4db15e2eae3. 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/GBSMU5951914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e6672bdb6454685f463e5c3c2102b498a5b0f00be02897dfae2bb665b1fc55. 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/GBSMU5951627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c17841d3027d1b61974aabacf567363b719b3e97b4a0069016670ea0868fa9f. 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/GBSMU5951636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52af657faa7bb222114b229ab323dd6c57028c07977badf903bc211ddeafbbc3. 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/GBSMU5951638.
Tak For Alle Årene [Det Bedste Af Det Bedste]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb96b85e413cca3a27d64efaed99b5f1b652338545f3ee30de104c165d3815ad. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DKBV78800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25cbe3113f1c0940930b6db43c2af74a25a117c53725945168b12b6799f56ac. 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/DKBV78600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c2970fe434044f3ff7d5f54f25b2e679e2fc4fc7d3a32c0351abd713ca1ed2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DKBV78600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a364ebacfb320ed0801f6632adbb1d5ebca7eb837ff96866e291f055fc26719. 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/GBSMU5951255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b2b41595354ed8302ab4ddbaa422dd3f9edd8ce0539e1896df7ba540650465. 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/GBSMU5951258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1f0bb6d08f9b562bc8a7dddd8b1173ea6333cb2ae74f015b16dceef6159b1a. 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/GBSMU5951259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715cb1039e1456e2c1376e5f03b2201f3dc44a3acaad8645b0a7168954f702c8. 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/GBSMU5951260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57635f063162a30c8ef34972c105e3c0e95d3ad14d41a11d04180820831f6f0f. 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/GBSMU5951264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbb4d2c90a9c1175e3442859bffa6ddcc99c836df7e6c7db4c68b645f5f2698. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBSMU5951265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911db1b3dc48628b1545692122d2d3d9f783440bbad383f3479a66eb9c85a507. 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/GBSMU5951266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7974586027fd8d51d365f483c973608c4ccfb05c8624c4d6a90193222d455298. 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/GBSMU5951267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aeea3cb5c19621189f467d7c10b95c9e7b06b3cbfcac206a7d7cb15d662ab0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DKABA1102117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc311969e1104dcc76fe1844fc8904414384ae69044b0fd01e83e08873387a52a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBSMU5952019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477505bbfbe923fe9cd31f82f2af21526b3f07857d98fc905c4e92f9e343486. 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/GBSMU5952021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1ca3058839e24a810d6103633d712b816f4ae0a3057f5f9b00cc0167a11164. 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/GBSMU6032164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6c54210e769ac6da0f55db7e79f186893c2f84e471b3df69996f40cbe2ae91. 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/DKBV79200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4060a28c354a2dbaa4fde05e9368463324f8aa641eff27a8da12a71b1867d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DKBV79200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f6485d4aee234a00d0c17eea4b7baf31e17abf3a16e0413f5d57a9a858411. 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/GBSMU6032113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de765fd7524f3c5f5215fc6901acf736cb90239d480bd80077765015226ccd. 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/DKABA1102550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d209d149d8c02fb5e64d61ea04b0f5925d4526a0712605524cce6638fad661e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DKABA1102556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7226da35a163d2d5286176e98bdee149398aab9f0a51f0857c08e7408a8743. 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/DKABA1102557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8152d2784ad462c95984c06eb497d0a4a983991bcac90e5417eda30400bbcdb. 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/DKABA1102558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6bb394b9cd8f81a2bcccd985787eea345c1c08c229d496e2672c416298d5c6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKABA1102103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1554b610eb10bef88363c7abd7719d6de761612a16997fc999dec159c9ee5501. 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/DKABA1103313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b61095e0161ca25d1fa1ebb5a4d76e92bdf95e769a039397d0d19af1690797. 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/DKABA1200361.