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 0x604637d80379f292a144ab2043ebf0ebd9525b7a832354752b5fc7315d7535e6. 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/54305afe-9d3b-4bcf-bdd6-20b925fa15d7.json and https://artists.proofprofile.net/proofs/artist/54305afe-9d3b-4bcf-bdd6-20b925fa15d7.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 0x821677ec773ea52895edf2e939643ee26318f6c86c8d0080aa18c8ff2cb968e8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/MXUM72400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179de5a71aab69931418c0468845bb6d762fd78910997fe0369b2e6061b9a36. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MXUM72400777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1521b7f53a39c421efe727c2beb0bb8b574dd07d5553f0779690b5cf4f8845. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXUM72400651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093bf641acca47ce4696f5c049ef9e2845329d770ae2b166db047fd91b7f115d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/MXUM72400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fa550a831d3e23f8b969672d32d4e8ea7947477276c6e3e14675271a3464a7. 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/MXUM72400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732b23a740d89b58472361f149f7c7a6dbedc5b7f1f5bce591de22b12ab97973. 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/MXUM72401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ae4f694b0edcef542a1cc8b30eab78b59a4db60e9b8ca3c588e4fb17ab16d6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXUM72401197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa254991851f30c2ceac6e143b134b6bab769da841496f987b72c3f7a0fbcc36a. 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/MXUM72500442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2615aba6ae40c5b341999c8ceb3b1aeea129aa9dcdd54f04f65d00bb5a9361ef. 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/MXUM72401560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5257dd70deca02aefb1d84934973ed95b33a324b720602d33ac2acad46ea3fc0. 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/MXUM72403088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3907b245efbde972d6a826092c5646492540b3c70f8d7852c92e3548ba773310. 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/MXUM72403614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919545a4dc0cc40d84abd563c4317491c8220ee0216996fc48087f20aa361424. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/MXUM72500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38253ba09b7e5dcb83595c67c652b89f2523601abc4ebdaea6f27292a477610f. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/MXUM72501570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae35d3fe8fa2957e306e764117f034047c9734b1d15fb71f216b780fb46e36. 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/MXUM72400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732b23a740d89b58472361f149f7c7a6dbedc5b7f1f5bce591de22b12ab97973. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXUM72401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432745198d7e8885ea29409467b154f1e52b5687c6b01ab57441acedbf612abb. 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/MXUM72301651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1521b7f53a39c421efe727c2beb0bb8b574dd07d5553f0779690b5cf4f8845. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXUM72400651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507d5e613a31aa3fa762e781082a254566c595e0d2707d31ebcf8872fc41374d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUM72403478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507d5e613a31aa3fa762e781082a254566c595e0d2707d31ebcf8872fc41374d. 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/USUM72403478.