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 0xb14ee9d581a7d9e104bff796719c7cc9315756f31195f306223154e5dac62734. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad224fc1-91ec-4be8-b54b-9591836556af.json and https://artists.proofprofile.net/proofs/artist/ad224fc1-91ec-4be8-b54b-9591836556af.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 0x693cba8025384f6e9d448335efc809a4141815e2a6c9b871d5bf4ae3dcb5527a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GX89G2570966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a41659994b9f07504e91df9dae30b304b472411dace8de1fb6f363fb5c2b71f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:34Z), 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/GX89G2579711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06682e6916e9e7d26191f41aaa5d05b551f1b6bc292d3ea1878b5adc610309e2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHN62586723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec627113e888dcb927333603ddc36c8dd323c0021c92828987392b95c7ce363c. 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/QZHN82524784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b607ff09f3f37b9d54f55b357d621850333358e3d95db5130a69f4746a21643. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:31Z), 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/QZHN82553152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc23443101a06991b6c0e598bda22847dcfd5aa80cabcb0f5b03f13bb87d2d2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:42:09Z), 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/QZHN92577087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd7826a15d878c599215b5c92ccab9a69c3f81ad218c84c74c6877b3260a9c3. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZK6G2552289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f837ce69836f4be7ccea6c1e935a15678612c92c1013ad3db746d9a4b5322f3. 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/QZMEN2593781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8ef161c72e99ce112b57ccc0bdef110e2e2f22a5084b89b4c7ae3f71296a0. 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/QZNWS2529473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05ffaa9a7bc7cfb0395f1d38b605e748a20a5f64f903e4884e80526fb28766. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWV2509974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d3f84e8f823bbf234be1cdb00fe5c459ecb800fadc7248ee4a1645142776a3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWV2509977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64031e976af1243bf45f0a1392e90c28c04d518d6b42574ecfb80abc16d0b01. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZTAZ2514866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f9c85efec5a21603d193bf4a6cfe5c109b8a1759af45384332e44a030db541. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZTB42515262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f5fa9d8086b2407739b066e4d9f3e368bac8d3bc4623500d73fcf4a4d2c84. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:00Z), 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/QZTBB2511203.