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 0x53aa3359fd527f2215751958e8f6f392d2faa2f5688b77267971a327632b50fe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9540ee1-b422-4c40-8b8e-096a58d49757.json and https://artists.proofprofile.net/proofs/artist/e9540ee1-b422-4c40-8b8e-096a58d49757.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 0x092a63cc060ba34e03999c35903f2afcbe36959f5578abc1f26d30a259d46c41. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTPX2456512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f79e240f0fc0f1179cd6c56ee4e0cadec8480b3787ebdff40ee50bcba43b33. 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/QZTPX2456513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5412630ec14fe99f78b6366573685dd733c13d466df117e65dfc8f6ca777959b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2456514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d86d7c5e4992766fe854a50f9170e79d12854dddd628fb950824478c73f339. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTPX2456515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269be3e48ca93016fd147234eb62cc2c2d11b19e4bf17d47aac969574122d85. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2456517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1bdf5fd400be88f0c083fe697673bde3dbd47aaa6a6ac418d79c568ccff74c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZTPX2482662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7f5e6cd90d85b8581cb0cab76501ad85887377a575e2f6f4e9e7337f8d3c9e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTPX2482663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c8da6b07211afcb00b6c78b21a6cf2f886b7edb59ab7232c354f660f8dfb78. 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/QZTPX2482664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97de416ad73a18059b1d54ca4901ebba6977dd333a1ef53bf779550e3edb9f6e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTPX2482665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633786788e3f0c67961dbb31a757c56659e7dc11b88f302aacd9b1295c9c93d1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:49:16Z), 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/QZTPX2482667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caee8ebf503194d94f65c36256cd78c7246b1444f8a8bf35213fbdfc96ee40b. 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/QZTPX2482668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d443d9671ef963fa45ca11835f80918749546f0a2286ae468bb120a6b76f41. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTPX2487954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f85304ef48af9a71cdbb3f57523ab749bd19774b6358f3c92becb8b83d890b. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:46:43Z), 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/QZTPX2487955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2274ca4203e854063c73e5d929666e6134557ce93a5b0d39ab886c5f28037686. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:41:47Z), 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/QZTPX2487956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceb5689ef34c9f436508a1be70c5c652c3a3a1e62797ffa87529841f9919779. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZTPX2487957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca7f7c3b4e453cc6c7a64fc7b9461316eddf4ceb6740b9c62de23ef675c684. 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/QZTPX2487958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6ad310ce84c2813733a48d6b52b206d170a56c748983320669edd869650b9c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZTPX2487959.