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 0x3ed3e68fee13ccfc681fcd9b9634413f0ce1658c3caf7a6e207c8fec2a5f43d3. 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/c3de87a2-b9f1-433d-9e5f-3cfd4df48395.json and https://artists.proofprofile.net/proofs/artist/c3de87a2-b9f1-433d-9e5f-3cfd4df48395.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 0x24172322c6cb8a5e902d67fb73fad893b2e3caad07b0179451d4cf7be05493ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ62069889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4aa9965711ec20b157f1a8dc3aa0ed9ecb04c2522dfe5faa653a2e9051ece4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ62069890.
Three Wise Monkeys (But You Are in a Bathroom at a Party)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7686c667be26966626374bf2bef6e96698fd5523a0d15939fcfa818dc6b1988. 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/TR0532215081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3435619f30b79bff8d6d829a6187f8a65691000119b09359720357f24bcbdfcc. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:19:00Z), 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/TR0532215165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98790e8faa2f84e361a4d85dd4d203bf65bfba2fc9631f87be871d2a85fd052b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TR0532415718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203e7bd809eecdb237e7cea57eb30b4c85f3595855f4eff4f3e21d01e58461a8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TR0532415940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6356ed5f2e3b49cde190a4a8231ae67c61be5d18edd2d310bdaf07e3184a672. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:35Z), 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/TR0532516041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c318b30c309ec641a345eb61cb11e7a5f656e6bc8e9e368ec04003eab2467b3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TR0532516050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845bceebf36a99002e9216fd46388267405669f26d4f2f5d091873785a1c8c68. 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/TR0532415980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9b4a3275fc16d9647145c22ed62b666dfc05e9e3dff414efa45744a250607a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US83Z2532632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd323ef535b7d4974217258e58046ffc3aa669f8794c84fa9da95401c591d3afd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US83Z2536446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcd717b20a2e3d4580d59f75fb5dc3543abb9c64aea58688530cca83e5e117. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/US83Z2547496.