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 0xa3898e0bbafb5a026c36d8264d83921e3b21059ffc7d0571c6a368a995505b32. 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/8bc70e78-a8f7-4134-95ea-ecf5db1db9ab.json and https://artists.proofprofile.net/proofs/artist/8bc70e78-a8f7-4134-95ea-ecf5db1db9ab.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 0x8f535f7db9ce6d020d16114254982230a81ad5da0ea06526afbe839965837124. 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/QZHN82036566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe613fccb15773821fe15d584d5104bc6850bc7d4e926949a2a119894627af245. 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/FRR642000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f86dda6756f59ea59875da6c11114ed94e1f69b6d9310c056d8d2ec4384730. 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/QZHN82036567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f32003d01ecd3fb9f4ae62a9a1eeffee86ca8bffca19606e347e21c2c06b6e. 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/QZHN82036568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e98924258accafc2102ac6d90f25a042cd22d5b7d56514a06247969e21ed2d. 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/QZHN82036569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b59c119e8accbd79e80e6a2b12dd0e96bddded8757bd0a7f74e12fdb0e7557. 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/QZHN82036570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d3eebbd16d22aef21b1dea52b63d0aa9f70023cd00f0dbb45fd2026299d36c. 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/QZHN82036572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc91ebe83a0d83260b57a152de096698048a234ea4398c6f9ed7610bd35b7a6. 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/QZHNB1942331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d1b4288cfb9590d62bf99e7dc80cb4f91dcb5b7a22fc8e8b585eb5562d709. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/QZHNB1942332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fbbaf8e25ede201c39623de33db90a90d57b0cce6ac648c4707d529bbf7280. 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/QZHNB1942333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053249b105e41825aadacedbd75e46743a23e1b50e1915607817eebecaa20a41. 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/QZHNB1942334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b855ebcd3cea837368b17d71af7f52c112cedf1184aa9265926799318d8126. 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/QZHNB1942335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6434a358fa44f2c550f70e24e110d2c181daf8d262e70ba717b0aa4db7774f. 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/QZFYY1916083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ac4f678189accb23b28240bb5e8cda5b8dbfb9de8097afd48d68ef0a2074c2. 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/QZFYY1916084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b9dd2823e6a03549192848425c95be2f20af4d2f0d10ded6d2020eadcb8b9. 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/QZFYY1916085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11960c6033d13a8363212d87504e1b65a2df1a5e37339126b16bfec03e5b930a. 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/QZFYY1916086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3c18b1ad9b800360cc170b4ecca0ac105cee6f0525003580ceec3c74f19499. 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/QZFYY1916088.
Medley [Jargeau x Delirium] (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8d4a545f94800b13966ab21112116523ede8e5e071ef3dcf26099c23b810a2. 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/QZFYY1916089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f95a9593d0904d2d062bf620faf89f0edaa66d6bbc89a937406cb6a4258a5fb. 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/FRPG52200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9d023f40da25550b45300e4ad64f5fc40e7a7f8cae94a5cefa67572208c8dd. 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/FR9W12118513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972db0a80fbb595913786dccae07098993e81d54ea012843f6198bc6aabac0e8. 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/FR9W12226829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5906cc1a2565b8da4db32aa6b24f26329895c27ad4039ab09f6be71ad5ace6. 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/FR9W12226830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b5e7576d94cc9f5f0f33b248abffb3f95a43a54c020930b95746e009b44e9. 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/FR9W12226831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcad8ee068aa490fe7b9abb15282bbb969bf49b3d2a23be3393ebc6f25f4deff. 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/FR9W12226832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5766e18da8ca8a04ce287b99361953ed26d0a9be8b15006b596b0dc86e1b9475. 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/FXQ692200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9d023f40da25550b45300e4ad64f5fc40e7a7f8cae94a5cefa67572208c8dd. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR9W12118513.