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 0x8a36e1d8a4a8b64a3187f3f8bc5dd0de073c0f47c34b1645bed603dba554a06c. 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/f448f7d9-796a-4bba-b59c-9fb1095fcaaf.json and https://artists.proofprofile.net/proofs/artist/f448f7d9-796a-4bba-b59c-9fb1095fcaaf.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 0x4572b6b62bf8b881dfc74391c0bcb43dbb58f5c1ca44b8aee6b1ce7fd6be22ae. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CA5KR0039649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c64ff771176ffa26d5f06c87573521856ee46de87202b937b09931bcb02fb63. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CA5KR0039651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b352ddce22fd192d2acabf1a7016eb557d7e2c47dc24f8c0dfb8e9493b4d90. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CA5KR0039656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce58f8c8e0ebd498ca8fc81be69b945e9ab0e2c73ed59b26863cd3cb92afc28. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:15Z), 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/CA5KR0039657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda03d8ed6af16a692045f7a21fbcf9979cc57f278c70b0f897fc01bff0ef16c5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA5KR0039659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa015872acff2ad6f4cf72628b28c8f1b6764d76efc556e391865ab2761bb138f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:21Z), 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/CA5KR0039660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb70bc23471f59480602247752a6abccba60347a70572644bf654832572f8a2a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CA5KR0039662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b42a4335b5bbdd3ea8e3013a921e0190ef370481140e3c7c5d0b727326971e. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CA5KR0039663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936eb6821f92e26f4854a4ef7a5899029167a0629b5ba20af13473bc121156bc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA5KR0039665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7b5fbf03b8f75345e958e6c54ededf920b3fd95e8f7a17463e095de0ed4094. 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/DELJ81913836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383084e0c21ba7666a2ee1f585b3b418ab96affd0b5414f1e1d37efd4141589c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACI1513887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf45e5aec35233bd8f604af81d97000932476d12fb43968be660c9904efd23. 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/QM7281674145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c7d0382753b41c945e8b8a4bcbe6f4853ab628e4f3084e3078a7e44b78a034. 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/FR5R00906808.
Depression (feat. Sean Strange, Mersinary, Goretex & Lucy Lovesick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ffa7d530c84510deaaf8d7c5f87174759ad477e2c0fadc37fe3e392d2e85ac. 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/TCACM1693217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e0e5eba994869e09298869733cae4369c20f219813192fff4752fbe0a3a372. 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/US6680915720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b487ed4297d4e42bd6c034b0353d1c24bddb66fdbcd1f3197addaf111788dc. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US6680915725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a4bda7698ea20993ea376435a0336700500550b9690fce918fd9ca84f4a8e. 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/US6680915726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ab0471cf1af5b4777b0f22b6beaa01435229c6a5140a7cd78fb44f0d38be44. 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/US3C60910082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6759acc30c13560b501f4b70279f52616d7b684edaea4aad76ca955cf935f07d. 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/QZK6M2537456.