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 0xc51f5a998ada565c5424be7214daa8a78a36bd68c5705980f7f99cc4cf6ac35c. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85950e53-b60b-4334-b022-265cf0b60f87.json and https://artists.proofprofile.net/proofs/artist/85950e53-b60b-4334-b022-265cf0b60f87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dry Bar Comedy Presents Karen Rontowski: Ridiculous Me
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 0x0fa0d253ef2c24f137308031687dbc9fa35b6aff38ddf73c95f0176ea039c982. 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/QZHNB1949572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e2be718d9853b9c7ebc2e2707f56f1b6da3a5c63a9dbfbff7a074c25cce4ba. 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/QZHNB1949573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f5771f8c8973f0e2c57d1ed5713b107eaeacb157734ec404fcec442c6b319f. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZHNB1949574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef97785642a7c78909ff371ef3fd9a5706c0a44df8992605149f64cf1b1f72c8. 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/QZHNB1949575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b6303c279bb700ef7e0d79ccbe875d28369c33b584efe644816b3074a4674c. 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/QZHNB1949576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4166f975130c2c3a02e15e703483c819493aa1a6d709f1a1bc5ba9fa2261f9. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZHNB1949577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7881b789fcbedfd5966c508aa6cae5ed1851af432fb69ca170d497ac6662ee7f. 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/QZHNB1949578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba036aa876048956d31187fdf8aed48a66c0461f5104ecd700393294bd11b4a. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHNB1949579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931c1f60833fdd64d7a664b5089dcc25e3ebed9901bbf32cac84288a1e39747b. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZHNB1949580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e04e61b4d443bf318c246adb6c8d71e824668c548ce199c7fffb6065e5a361. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZHNB1949581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31520339d897b6046f4ffb1c39f1f3a62d9782bf5f8fa21673d747bd44060b0a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZHNB1949582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b259932da2fdd8da6280ae7d7fdc46a2684ceca90cd0f9e217cfc197493b5b0. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZHNB1949583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9136390eb20dc2329b87d226f227bac377a54b3841656f2b521f81010880a35. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHNB1949584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26be772a207603fa5031034d8b1cf075357ba37c6ab70e24661b40a7c56424c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHNB1949585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac63568a80c64363a1a9f4b4dde4f0b1e1d067ece81a9180e6a5e3603f2c7c5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZHNB1949586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137e11b92e07bc8cb1851107550d02af7e945e2d17c2f9128173183830f5a5ec. 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/QZHNB1949587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0649397c1b5033ae5d7dca109fb75891d05f588353dedbe96260bb7749980eae. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNB1949588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f04b2cb428a0ca1cff2903d71a0f520fd8a8f5057b17b91c61702a2fc988d9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZHNB1949589.