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 0x5c790d3c6553859c36e024edf3e0bc5db33d28148981c460e6a16faf2ac7639c. 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/50053851-9476-4095-942e-fe0173491fa9.json and https://artists.proofprofile.net/proofs/artist/50053851-9476-4095-942e-fe0173491fa9.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 0x7ffe375eb621c48d3cdc9ecf889e56cabec7b51b3a31d0466c06ab62563e7d8b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:19Z), 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/GBLFP2215152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60c3df58a78ea36b4007e3641bdf1a4c3c89d700648ee514ee0e23937d3cc1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2215224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8940b698ee46f4e284ac994b9c4e9c177d56d0af579177daeb9c1c37bb26fbab. 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/GBLFP2227930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78376498729ebfc01337121a041990dac138b8925d05d090c8bf73ec454fdec5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLFP2215217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8a9fd1c36008af2e6bbf65e99f71156fd07fa9d75da236a121bbcad275675. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:14:08Z), 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/GBLFP2215153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11feecc73900ff27d28776f67f077d3298a455a9e6205b9ce76c714bddb616. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:16Z), 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/GBLFP2227931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1af74bb658c3e42645228ceaa4e3d0b1b36b20eadc5fe21c734518ea8fe5ac. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBLFP2216314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8857eba95974b2e48f96a1c8f01bfbc89d694d406337face901a680d7dd2af21. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBLFP2216316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2094c9d3668fc84de5a5e93af6901bc1e53ff6e1d703401b1b498eb6afc02b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2227933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1c4da375eebe47630db86b063a9c9149559fec802699bc4bea9ed2beabb1d6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2216317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a35cccd017c45b56c666999ca355d5ab03ab6186c73e96b6130e32eaf83686. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX3Q92205578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab587686c8acffb1e9af646872fdd5ed747bf01d809dae7ec1b14859cc476cf3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX3Q92205577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3dd50255724b9213d8d724d1a80fe030c522fadbc8bacd6e00e29ca8c4966e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBLFP2228781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a822736602204d5360fb511d2d08527bf364da40833fa6bab740673492927. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX3Q92205576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb4fc0b0038caa079fe68d27a1338cc041d5e3d24f28bc0348b5128feef1c6f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GX3Q92205580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2be43e7ee82eb109bd33d7fec54729a30557b4f5405baaab9f3c7ccec563d35. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:35:18Z), 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/GX3Q92205579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648b959bba1282d192e45ff582757a7b7c9bfc0118363dceb97dab0f839485e2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLFP2214680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1010cfbf91a5fc1db8ff86e3f0d31261d01a92816c871a90269ce60a4c0cc9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX3Q92205727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3854f43e0f725fdaaeae522702758139c2297ce9e141a79209d099f8c893dd62. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX3Q92205728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad453375092190ee76c593d2d105f65af0acadc7021bef4d0581feb18544f0da. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX3Q92205726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d78fcf9ef6f93141e4c7518d79cab5f3ecc4e4534f0f4aaa8d9a11d1f96235. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX3Q92205729.