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 0x2afd0a1ac6365b12b6c677c4b003d8f26be6dec4d8130a7196ab804a5f75064f. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bae6661c-bf1c-43cc-8f22-a0bbc91ed61f.json and https://artists.proofprofile.net/proofs/artist/bae6661c-bf1c-43cc-8f22-a0bbc91ed61f.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 0x346b1f9c1653b26fee1ad14a8a76449098b66ef112a78eb7f3710e3c9f92579e. 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/QZNJW2433434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e95997b1ca60d8e25fa444adf03a991e68f2bb06445087465ab6a0eeee3e0f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:06Z), 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/DEY472573146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1435aaa0e98c7b7c2f5cfd8b8a389a21aa0b1973896155d3fde48d2c18c4aa1c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEY472573147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025baff93a2e09edcc16da9219a843ed4e6430b3172d199a5028ca7fd910d57e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEY472573148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1727fb7733bfc6d5f6e02bc89d3597890a05b4002212fbf707f3ca6376715aa. 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/DEY472573149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8299d6422c1b808f457a2958c5d6f9cedc445eb009b89cacde5834cb66696d4. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:22:26Z), 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/DEY472573730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e13ea83b5d93f1ca04f4aec27fc86bf7b69f999e17fe5bd75d14b36bac745f. 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/DEY472573731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55ad95c80419db717bb2e1b97041df232aff289385e6ab8f3d25707c458b0fd. 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/DEY472573732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699fba36d8c9c00c7dd68ccad18c2ed9bacf1b7a9221878a2cca67db75b99d28. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:52:37Z), 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/DEY472573733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c35df2390158ff6bebba53563fadb8c2a412635c042f15373a48bc5003f8960. 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/DEY472573734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e4024cb91fbc9a180d424fcd7f205ee601847d70b52a0d7f0d205467c3e32f. 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/DEY472576290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691b4ef7eefe83339f7a0fb9afb005910eb211dc0fb561e0854904446228ad6. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEY472576293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ffe26eeee590f3ed4bd0775d532a40aa5660f947560a56d52f105becbc991e. 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/DEY472577324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd414caecd91ee857cf9921788a31d8ae73b0c41ad2188fc50f6d5b010d034c3c. 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/DEY472577535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a708e488326f3bf538c86920ed788e016d93ee95c14c00d0fbe1b8844ab56. 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/DEY472577977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925546b349c649ffd0f30e9472300e8be2f370b4c3dd42918a25f234ab32e5ce. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:38:48Z), 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/DEY472578446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94b1e794fb910bd71a680a78eb538027cdcb2a4235e4b122ce2b91431b09b1. 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/AUG0H2501457.