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 0x234c1b600466c3047ad173ca8775ebc265de480e899074bc8ae3be732167e328. 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/68edf0df-0d2a-44c1-8c52-3996a15ceb3c.json and https://artists.proofprofile.net/proofs/artist/68edf0df-0d2a-44c1-8c52-3996a15ceb3c.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 0x5eb0c283535648a3d77228f2bf8ea5ac49428c1a0dd88209b3c97a6a9537953e. 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/GBTZZ2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05455c8e60e1a4fb973db33c0b90ee5b9a0d2df11aa82bb81f5446e8d76ed33f. 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/GBTZZ2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2796f562531e53d64d929b330832b468f512c8eb45e3c939fc5baa01b6412800. 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/GBTZZ2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150258f3a335fd1c8c2fee72d4928e6e07f3010484e9f3093ad11695d2f6c81. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBTZZ2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c9f815936a5558f4c964f07b2394afd22f538330262f493dea6918ff471bab. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBTZZ2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e3ec48d6f5e67b86d18905498df15fd6d692f1c25c521e85ca95ce73f7d8ab. 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/FR9W12414695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31eba248fc4b0526f605f8ff030d288c7eced4a16a4b6cf4d169c789cca607f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2413967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c0778f0a4e11ddc40c1e99dc4112ba8c646c6214e2514760645b8f114c57c2. 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/GBTZZ2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05455c8e60e1a4fb973db33c0b90ee5b9a0d2df11aa82bb81f5446e8d76ed33f. 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/GBTZZ2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88cb08363dcec75f9a576c45a64f4e013a7c92f8c894077ce51a85d1398a4ea. 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/GBTZZ2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5397aeaeb4318fb5f54c33568dfc40f41486d7617d7385499134d60a467b0f64. 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/DEEC33500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c485b425c5703b6352c617ae39994adef4c34ade2a8ff7d9ddd38f479601e. 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/DEEC33500521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e0d4508802917590ef559b5ee47e49d7b953a405859373e3c15b318bf67552. 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/DEEC33500522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4714a8deb1d9930558db8c0a524b90aa1be9be2e9ec97c1216016b4081eec269. 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/GBTZZ2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14ba962cf5b25e3991942048018820433877e3fba907c6b939f239477cde458. 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/GBTZZ2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b7c1ac68ee619f16ce659b55044e5b1638e11c47d0755825d3678a6b6c3e0. 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/DECY62000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971eb53e122907f64136eaafb72853126125e60216660ca4d02c7ee13e9be9bc. 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/GBTZZ1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a54ae5658e37443a24d0b2dfc892ff70cf658923b363ad23313214692de2b5. 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/GBTZZ1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fac3dbf4fe811c858e262dcd1da83e4558336903cb4453307ecfa623555a10. 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/GBTZZ1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afeccbef08a69d394bf9cd811cbbe890bbbaa3a8ea67a57a1a7bd32494340eb. 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/GBTZZ1900021.
Tale of Devotion - Prins Thomas Diskomiks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ff18531aa4b1d166a96176903bd4ec192d074b1aee96350584f6279cf9ae5c. 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/GBTZZ1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09d26d288129af8f80148c2ab68a9115d824955e64b3cf6e5b348312913238. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBJX31841001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff170ab86e8b402fdfe029fe37429c027d0414f164ad9800852fb5ea8bb15fe. 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/GBJX31841002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c994b03d84d82eeae59ad767f62cc800b310dd314306f24de6214ad866c227. 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/GBJX31841005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42882b51c211e9779361e0bc7d375aa83c4f76c06775f0dd5514dc50a2545cb8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEWN71700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05c5cfde978ed6479b010726ea12b3e2869dc2933c89632cd62d2d435b1233. 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/DECY61800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3390a52bd1de411398ebe1dbdd9bb291dadec62140ca929a02dc1aec884673ad. 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/DECY61800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9605924b66b0dd92378ab8c57c3046a9fd6dd9078a2d6b3f81a1215881c811a. 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/DECY61800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7b8e8d74b64cd7fe99661ad9d3f4efc7326f4aa4ee37cf832f7358a5b57de2. 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/GBHQT1700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b3df7515c1eca83bcbb016758357cb85aa70c535c83e9184fa06e63def191f. 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/GBHQT1700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc71e3f06e35540f39ba3527f06873cac502a537a1411d6937a7ba66541a59. 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/GBHQT1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37a6d2b49add2fa519d2e9c2dbc7d45142fbb43c11f173b372392f9bd030d9. 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/GBHQT1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2972c9f7415b6833bb5c921964fe16ff58644a139d53bc9d701be058746e09. 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/GBHQT1600015.
Takoyaki - Terr & Daniel Watts Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b9af558f6180597b9f174fed933e154f97ed453e331539624e42ed65925a80. 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/BEN582400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedfb96780cb00def1b3170da0c2bb2c0bcfc65429a95c06740505532316978c. 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/USRE11900325.