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 0xb6f17dab76be2ba803b244440af76fc4b89f100b52713722dd67ec7782f7d8a1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95fca7db-d328-4151-b414-dbc2477836d1.json and https://artists.proofprofile.net/proofs/artist/95fca7db-d328-4151-b414-dbc2477836d1.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 0xf5a5b83a4231f8c7c0c6e99eaa7eda372d41437c061ca21c211e084e94475587. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFP2122194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd0fe404742cb7d5e259c0e4d29ae3144c3e928c5534ac026deeee5dfb8d174. 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/USA2P2434244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cad515639067a7d268a12418947bcf5d7dffca2130244ccdc83da5501a95e2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2406404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59db33906555ce1fab34fba7ffa627c3a4217030f2a9fe2bca7ae26400fa90be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2406408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e97d96341e147ed17cca6ffb8a5e8b640906d02bb28166f3116049a7f3e78f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2335912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a812e38ea8a3e22db80476eaf5532853fcae4d928267e608f50e8a733dea39d. 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/USA2P2335925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cfb59068be99d98f078703f34f9afd39da3d74de19e022e65114275f30a8b5. 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/USA2P2335908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0fde88a0f2bceb40f0a760f60dbb012e661b31404a2b9f00351dadf02e46c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2335910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08aa7c45510e3a8561977004f65bc50f458c5d1a183d67ed5a7c07fcadfd367. 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/USA2P2335909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f73ff11aec6f2db574cba065ec4213b1b22d65f185b9ce3bccca3809d33458. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2287208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679e528d0e84077ab82bd7d6492316cede0582557059913132ec2807928b9361. 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/USANG2287209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37775aef42d97444e28915bf4cf4f20bad393c04304c74ad96bbac72a8fea75. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG2256680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632bf1b4a0e803a0e506dcce299c1c89b77c53814e27f38b7e8393a25cfa5130. 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/USANG2269433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632bf1b4a0e803a0e506dcce299c1c89b77c53814e27f38b7e8393a25cfa5130. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2269433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37775aef42d97444e28915bf4cf4f20bad393c04304c74ad96bbac72a8fea75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USANG2256680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37775aef42d97444e28915bf4cf4f20bad393c04304c74ad96bbac72a8fea75. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2256680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a245d650489982986aeef76c7301e46fb3642dbc356a3a0694bbee8a54870. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2230939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ff0bea9bb32edaa1f60cd7992514da2c7fd45fa84068812da8eb996e05ea28. 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/US3DF2269633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe6820187e3b3a4914e87694d8380d555d196162d58ad304871727c64ab6aef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2250187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c7c8268aa565ace1a461c25ee11abba996f873bfee530d90c10c1dcd3bf101. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2204741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298ec8286fc001d664c2a6b670c171857aefe6cde18b4f53393a6e073c28cc0b. 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/QZDA42179732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f15866790dee7de09e4ff53fd58d7c1dbde7a02665df88a1166f145e312d669. 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/QMBZ92063518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af6f4ee3734164e921769b7f3bae3e0d4c28b18b364e86b58ce4f33b6eb4a00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUGBT2224255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06375421c9c3684108ce372b9cf418c58aa6cbc1217c0d57008a480acb6c124e. 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/USUM72401976.