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 0x6c06b5dae7472faa17d7ab5dfc83ac4b0307c6d815b2def520d7d276f7b359d5. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cf9822b-ebfc-4941-a6f7-261a43678e1a.json and https://artists.proofprofile.net/proofs/artist/2cf9822b-ebfc-4941-a6f7-261a43678e1a.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 0xc299a15a6a0a4dc8b2b13ea050354895f21a9c3947f71f957ce381336e7c1fa9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFX2469417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992ff6b4ea556d5045b5a5ea7e59973e07b616ca92227124b4051a268b7909af. 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/QZZ772401429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6438c83fc33536fed78d9e3c5427b6b076fb4fddedade77ee954f5849f256d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ772401430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5061bff129b07d756464fce7aca9b32b9eeb6b49e8d34312b50ef5a0a15a94. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ772401431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096b311b235cb2eb00be300188eaba4ceb37a08d7237e3616f339386b7b01f8f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES82578069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c0d445b060a635e8a2859d34eb036ea2eac692013f68882cbf8b957d29d6e6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6Q2572457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68d64f06f066c5923f0a287b062ad7f912a64c04845eaff97be1b461fe59af6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:34Z), 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/QZK6Q2572459.
are we going to still be friends in college?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e1b5d51ad61125296748a59ea27fe055bd6ebc4b9a6c20232c57f0af886b24. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:26:31Z), 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/QZK6Q2572462.