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 0x4825a691c954178bc294c9c6b27bd64f8d1342750a6bec9edd48370814e667f2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd58b2a4-5b78-49cb-a640-07766e6575e6.json and https://artists.proofprofile.net/proofs/artist/fd58b2a4-5b78-49cb-a640-07766e6575e6.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 0xd5e83acce031f1650cc07fa1cced6eef8bb728350307bd2e6b6f8ac409152385. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWQ2154845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca26c91a087aecee1b10d41f8cf9eb2794c2789ea76a978c702c091b7caa18b8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:10Z), 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/QZNWQ2154847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9a7ee7c1ed733eb9a07ba853494e541e421ddd0f3fd3eff0abd4e27f7531c7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHNB2060185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f0007678934509782c5f12434bb8967c331bb453389ad1d21b222eaf21748c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:19:39Z), 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/QZHNB2060187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb34ba226065139d99af1b446bb0e41991f7337e6fe5f520e2f58ba68902abd4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:13Z), 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/QZHNB2060189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ef16c5438e9d5a3b8faf369e479c13028b539f9b0579429ff100f048264f21. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNB2060190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9aa6da52adc3b2846b75af1045f7de4a7ea2aa5c72fe2d25ac86232083cfbf. 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/QZHNB2038661.
The Devil-Faces of My Old Friends, Beneath Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1c97118a604850e0ca6cec63c1ca47ac10cdfe831f52562d3f295a02ef3868. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZES62050613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495907e40ac4928c47d27a5b4dbef0114c7199c0012e2f06dab91819d4d07d69. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES62050614.
I Drop Acid in My Spooky Victorian House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8237ae04f06c632250d0d62f6adbd9b87c50a0d8554bd7713efc09ae9b343a89. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES62050615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b10141163a4e3e8d29002c7698bbfcb4ecdf85d10203fbd82c26872a7344b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES62050616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19ccfff2e99807c08232497775db564de443555fd76a4d412e684195585bfa0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:22Z), 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/QZES62050617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db4a42b322efe8c277bebb4c89a9770b1caf5a04c3ddb70ca749bf75bedfbaf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES62050618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0f9fc4b16aeff1499c89e48b440fac213dcc800a701b1ecceea6ac4bba067. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZES62050619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c293c8093bc59e6b024693c055733e800f33d617e83b8635433b533d287d3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFX2490073.
You're so United Ninety-Three, We're so Flight One Eighty - Heccra Redux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00c79b3c723ef9904f34ef993939588322f1b768b180dcac22b411cafe9d3b7. 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/QMDA72192623.