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 0x6a3181cf29362f9e403449a32c2c4551023b26a624e2d69fb4a04050ef37ee1e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88506146-9b89-4adc-8d66-e7d9629c957d.json and https://artists.proofprofile.net/proofs/artist/88506146-9b89-4adc-8d66-e7d9629c957d.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 0x235d9ffba2f4a764beab6e8aebba1eb4859d21c3b6e098a666d025159ab2f272. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMEM2506980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8703d94e9f2fafc94a4850f0f9465be19ec6b532c2ece657ecf77878c0470cf. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZMEM2527326.
Танцувай със самолет, хеликоптер, влак и багер
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f21e4bd163005e5746dc48c070f97070487ee093c7c2d5d689baae0663209f2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFW2503585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac043cfa4e25d3352b26cbcc20edaf0455e557b1a671241289c15bddd556f6e. 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/QZZ772578855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2ea33848ebd43e35828834ae2a1e981db11351978da59c7c88b5accb87784f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:15Z), 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/QZZ7R2554837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286fe53ea9f54ebbdaeb550d8cffc1b074db4c43839fb18f866ca34a1646163. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:51:01Z), 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/QT3EY2549155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e0361147ee78aa5a4df5d3152dacd6730758b271e100811eec7e0eea26d5c3. 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/QT3F42542811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893e58a24cb06d941792341e9cc11733ff236b2e309d4fd7b64813460aa1b624. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3F72577712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed75e5d86c18238eb8020a81c1a8651c5eeabfe6f318113d99eb12f1a53865d. 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/QT3FA2562029.