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 0xd3ede3c3cbac70364c2bc382443aed12cfe10dd90c161899b07deb6a7f437418. 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/26016510-241a-4efb-ae74-761d37ebf894.json and https://artists.proofprofile.net/proofs/artist/26016510-241a-4efb-ae74-761d37ebf894.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 0xd9018088040b7079e21f1d8ac35a113673aa943aa0a9019147c1f57999bee77d. 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/TCAIN2423511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dce4d4fcec965449595562c13c316ad1a85fc982d0799643364e80fee2cdc5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPLR2459451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6888b00f5ba0f852f2e7b34612cc527fe015a7417d8e5bb66d679a94b39b8d. 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/QZNWW2424970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76164d75346ea56a63e7cc584764d2a000c00b5c0a2ae9afcd5e304bbe649a18. 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/UKXN22401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4880c0d54074ac222bb2e074801d466179e6af7e2554924cc76d4b269c81e7fb. 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/GBKQU2412364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa966461f3fc3ab2ec86824da20ed06b10e108e14abfbd58e2945cc448cfbdd61. 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/GBKQU2412365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225d39ca015c04616d18bf6dcce7a5b345a054eea28f8b8751ccc695944094b8. 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/GBKQU2412366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bc23aee41afd8bcc788fa274672c742d3a8ff5b07df2b344d66bfc36315876. 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/GBKQU2412367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df38f8d6c304c07cc80ca32e3033f73a7ce2b3e8b2c6b1fb30c2a90ced8d8eb. 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/GBKQU2412368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36aa35b0a7d04b6d0203db849044b8557837bf374643949f3993a0a289c8b7d. 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/GBLV62322049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996d175bee5efde00c475efc6315ad4ec2e5525f6f9fe437e4e6d9985ec331c0. 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/GBLV62310764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e90182bf057ede045e23a67c4d50c0853ba4a79ec622d8151c8f3b69108b095. 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/GBKQU2398348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd5ad42b2b3db3d29737ddabe10e6afaee47de944a86b8d9f2dceb01cebfbba. 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/QZTB62313270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e36ae992f005878168cc713da19db7e930b89b084b031343aac83be741c249c. 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/GBKQU2386833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ebec2940e80365e6a227502fb8b861537a2d54e80908fa339ef02c5db9222f. 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/UKXN22300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa224e5912a6a46a80cced3cfb74fa3e1f94cad7f020efa27435e644d77b4b0a6. 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/GB8KE2306043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47461347b521af548223143044b7f338408b8d92cf013ce210dc14f7e20715c0. 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/QZTB92209041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6dcf1ee229cc82a04131e2f4c45aec6ac4ba2236b1db9517b5ed0363965221. 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/QZNWZ2260056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40926d852e5fcf655e50aa8a9c6505005abec1b5802e64e97ac4c1b3f23cd364. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAS2136068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609f91cb6603feca97801cafed48cae363bb73c2c45d8ae8c67fedfc065d309. 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/QZDA42186624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a269f4d48ef3b72ea002a2f1a8068fd2b8df7624369c052d1dbfa88a314bd1. 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/QZMEM2066830.
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