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 0xd3894aa9dbcf2190f756db0a459971e05a10e9799ce2e67a035d6a9758e8508e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7b72220-7955-472e-9477-e17c31466d8c.json and https://artists.proofprofile.net/proofs/artist/e7b72220-7955-472e-9477-e17c31466d8c.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 0xcf54aa5c17d26587e290d66bc006f5f3710ac182ddf47adbd19fcb51c118fd6b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZFZ62173505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ef81ea632def06d8656c29018c49a2656e88bd2ff0a746133bdcd799595cba. 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/QZN882129338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a208e472aca06b72b30b213b1d58fc698259151992adeaec073ca4c0eac65db. 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/QZN882140055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e59e4030db51a7f553c6c30f3bdb877636d5c90501194afccd623d53394164. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZN882174872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8209a85ed3b10eea55f152ce807fbf8b65a60c25fc7fa66624eb3be6bcdcdcd2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZN882217598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e788a969f4a44b6fb0443b0e572691f739e11958a61c9c64596e541ab0b2b7c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZN882220821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a750e7833ad6d81fda7af2af30dd785f8f0fef72397a8063dc3c8384480724. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZN882253176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804431c75756c2f4b1d1caa5f0dcb8e9e3c0c3b46d1d91bb6f959fe91fca314a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:18Z), 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/QZN882326420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f75cd54ab33ea976bf023448bbd701cec06f35ce59a74cace51397bf7d3b26. 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/QZN882344212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97955e9aaa7b87ba4410a56aaa2f7bef13dbb7e90550b62ca7cc3fa2a854109. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDW2367294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd1d3b60d5466d2149f65217302a94bf7ba6c2ee9de564d939e93329c1a80b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZWDW2390503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71f0a1c97416848161448b1c85c2903d631deae8f804bfbfb74e9ce636c32c2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ662328220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fd35fbe3529325251b99ab15cef4fc715f9c5aae49c419381a676066c5dab9. 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/SKCM52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc038c7591e366278709e4f7719816447c10daaed14a1c3562e7a058ef7d281. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SKCM52400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0343207a30995adf3e40c41f569d95b8a278fc773492bcd7f7333734611dea. 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/SKCM52400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96916568a2416f7660897301f1942c64e1c7eae3b23f3ab984790278d71570c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKCM52400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850f1df40691718dd4b4308a0b78f51dbd67acb55ce9f1f6fe88d6ad1bc6b58b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SKCM52400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644ae8a162eaef7af0992d13bfcef0866af5cac98af854770460bb67eac169a4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNMU2582207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c15f605e9fc2edf6a75a09658b0fa767d0d2f3811fa73f1111f4743072abbb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:40Z), 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/QZNMU2585911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151ad4b10bd09863ed540b0cc852135837225315427d4ca103cc492dec5d741c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:22:38Z), 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/QZNMU2590880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d1a4906d35aa6de129dc6330373367436a5093a870e77a957ad759c21a180b. 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/QZN882160123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb05350f1c41f0e9a4406bb5190303d86109e5ec6df2a50a417e72283451a30. 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/CZA232200856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb05350f1c41f0e9a4406bb5190303d86109e5ec6df2a50a417e72283451a30. 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/CZA232200856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861536bbe669691dbecaabd715b5d90d7e8acd3462ea30f0a9dfdff3125b7694. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX762120844.