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 0xe2c8a6cff2658eea71bc6155d058e10d6ab3bcdc13d73b5da8f89bfff6cfbd93. 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/0cba9fa7-e8a9-4c9a-a47d-425bab484ff1.json and https://artists.proofprofile.net/proofs/artist/0cba9fa7-e8a9-4c9a-a47d-425bab484ff1.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 0x66ab080a741adcc2c93ec6ae8a0d9b2ff002a348d7e81ff48e91da3ce6e2e30f. 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/QZFYY2321592.
No One Is Holy Like Our God (1 Samuel 2:2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1836a49d7e1c82c08ab828ca35564025b6ce1e7d08c5ca6853326fb2f14861. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFYY2321593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1646c2e7f8089c9a5774d45b4fda64617482828abb19b3102d905f336a7d3af4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZFYY2321599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477fcc2b956533593ebbb4fbc3cf469d241369c94def019f0412ace2027370d0. 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/QZFYY2321600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1e3628894f5544f246140a1f4ef7abec0075fac2aa91bd3fe890a179b2aa56. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZFYY2321601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6886f41c9cbc900d442e47606852f348205bfc9627f8abcbfffc7d8310bfcf8b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZFYY2321604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8687c1177e10ad3334685ec8a510d63d9e4faf20c6b2bc9bca200fddb3602ee8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZFYY2321605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3c0c68608d438cd86a7f1e20a90f26e6cda9eabc343af60ae7e16575fcae4b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZDA62212858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a3d8fae0c3b683455fdc7c60dd096a445c2dc65ffe4e54265529d75af395cf. 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/QZFZ32223805.
The Love Of God (Oh The Love, Oh The Love Of God)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee7035d15118244e2c957182fa8559c7f50d56743ac59a1d93b1b51658c7bf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZDA62212876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337a21274dd45a300c478f401b86653201d37a09956914caf74e67af1548cadd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA62212879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a17e35013435d7deecfdfd16c4c3a8ff3496e3f3f53cd3620076e4d00b3a271. 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/USHM22141228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc182eb3d4fe12e8ba09d96ae34686585d024d7e7a23d3ebc3cba8a2a0554c6. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USHM22141229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8483b18726b86628e853c27966098b8a8467dab18e1afa664f0bab8a72aaee57. 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/USHM22141230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90413097c21ba390fff9d91d3873896226972400a2097123a63107f8c2c6a164. 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/USHM22141231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529c01a72f4f3bdaeedc02fadbb9270c8d98a516f2b9e302c7f213b29e078768. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USHM22141232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd5eb77834bca015c3e4f4743fc528208b079da3a18fa8b70ca3d3043058272. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USHM22141233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766865d9bb79424cebcc05864a48a2fb06063652efe663a8c7c5a361e23fa7b4. 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/USHM22141234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dace5f57fdc672f296772f869cb573d228de6b22c8a75f836c6acfdde9e80a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM22141235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3d079fa11b7277e8d0b751a20e983aca84765be98f74864f8ff891e5dd5cf3. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USHM22141236.