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 0xa28cc5fa589de2f8d122e7661894c5ae21fbfb4c1922faf5c8c084bd9b078f8c. 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/10c4157f-4546-49e9-97bd-43c3f67b4f83.json and https://artists.proofprofile.net/proofs/artist/10c4157f-4546-49e9-97bd-43c3f67b4f83.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 0xc8e980297ea2348b8344e5a9aaf6cae8fcd455342444c4e4085028e5330e461f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMZ92473137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096166079c46c8eb2824f55dc1421e7a6cd5f6021efc1e6675c12acea3459a4c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BKVYY2400562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b490baeaccc6dae8219fad44f03f25c0d71a044f7a08e90faae1c0b505cf24b. 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/UKZGC2406941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb81ca3a6021ccac44e7314bb4135ac2347be979aa2acb394a44e42dabf452fb. 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/UKZGC2406942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd528693537f77e94e147dae2f438bd3a7f0cb2d6fd34f66d1340acc2bb814fd4. 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/UKZGC2406943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c89a3cf566304a759e8407aab38921d80f50b2f5907176b2f0e5a6ef42fcd. 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/UKZGC2406944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb81ca3a6021ccac44e7314bb4135ac2347be979aa2acb394a44e42dabf452fb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKZGC2406942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcd6a0e3c68f380b331bfbda2e77cbb6d25d0a5d5c09f814a45d94fa18de018. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BKVYY2400946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6279e7704357167ffd567b41a7f7a2fc427fa365d697add01339531206a47dd1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BKVYY2401491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ce1e6abd50599975470edbb19a4374229bf642358c0ece3e1328a4287cf5b. 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/CA5KR2508616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231d08b4ccd44796559f7c5d49c36a966f94d7f7b1f0407befcefc2b2b67b7ca. 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/BKVYY2500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8630af263dd95f3913dc30e1b9e1bcf56400d03631c3daa35aa74a69e2ffc498. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/BKVYY2501043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d91494267283957cfae0158f880c7963dd47dc3a5d706274e8b404576a8523. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BKVYY2501044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c508eb4b6d4583e373e6fd7a64952e99ab967ba0101d1423e9eaf33c19fa606. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BKVYY2501354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c63d0fba5fed301ba814e4334a0688274ce752a3e08e365f87a4c625bb63bb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BKVYY2501355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597f464f413bb284e81147ee32b756474199cb9bfef0fa1bb9ef957fd8b08a06. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:56Z), 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/BKVYY2501638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da38aa4e76cda357fd14deaec0fd1b432547221e8c896c595445551d04749b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BKVYY2501640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc142e3ccb9c625d5c5b3c1a4da91d2ae312daf823c2249ce50d9165d39f4fff1. 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/BKVYY2400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb223c13dc8b2d5d091b0dc0572ebd9161384cbeeea062d72ca321df6ac8e5. 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/BKVYY2400717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c6dcccbb27d8ba801d9085e306dc0e442ebc5beab2b7b3d3415f18abef155c. 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/BKVYY2400718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46194b2ebf7eaecfca6e9c89a9fe6b88f30ae7734ffe4454a02f84fb347177b6. 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/BKVYY2400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4a7d3718b78aeeb775f3753a465492a038b0b456c762d38a4ef3a78c6a7ffd. 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/BKVYY2400720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e936cc25b3b963286c371c6fb6ab37594deecb219fecc11785c948d8afb2e3. 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/BKVYY2400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c4cc2e13eaca9ea03e44def9635636da38fb5a04dd224c0a71ac6a0077f78b. 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/BKVYY2400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6786ba4155faecf9ead3f130211386990ef2ee4648174bf3b8351a83fde494af. 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/BKVYY2400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a090c76ef1fcd00b5abdfa320315cc5078a89c1a87a219000db8ab7c02e351. 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/BKVYY2400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d92b647aa6a576413e259e9f4047050ee498638c4290d2ec673d5d2dceee4a. 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/BKVYY2400320.