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 0xbdd219cd98976b26b7b7b868f292021c8ed1321d508a12e4d6b1be20c843d9b3. 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/7d61b67e-77bd-40c2-b8b8-b82f49aa8421.json and https://artists.proofprofile.net/proofs/artist/7d61b67e-77bd-40c2-b8b8-b82f49aa8421.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 0xca4e7d3e0f9da0f4ffe340ff46652ef1816215c79d47e60daa717af0c235785c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:32Z), 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/TCAJP2566140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf4722f066315e13e18ab6951bc34ab0e9a2e14e11a1b33f337508a5f96e8a3. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCAJP2566178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ef1ce1a38a579899f44180379c56812dd49b9d80e9a74d61ab9985f70af78c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCAKB2511236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3ecde242d466416abc82078f8fb8e7c4d8d5afd1692eab897729207dd2458d. 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/TCAKA2511208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdda34e84a77f6e0ac5f2b23019b34f6c7e99e41955ee84274e0e702be3e857. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAKA2510892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7100fe6aec971ab7b61608939b314c15d7572b85c72f63a8ae644ef28768bc25. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:13Z), 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/TCAKA2511178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64fbf47b381835f1660c67190e2cbe269e0869c430a7139d4f372a1fec3393e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:37:18Z), 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/TCAKA2511110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ba1f6517f10d76b044c453e878016452e2ac34d58be0795f52f147a54790b3. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAKA2511295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fefa561f6b81867b1f445b9302e614d89d186aea7a6b50de690ddf8324e187. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAKA2511018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792ad8f0f3379c47c1f60218137bd83266ea3242f0430078ddc0a1e4ddd7fbcc. 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/TCAKA2511049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c76e7e034d7abba61ebbcebb61e3281977bdae78d1ab555c7e7d3c72b4463e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAKA2511267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b1029ee44e3a19f0178a27fc8720a0a7d8535931dd0ae0a9ca535987282967. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:27Z), 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/QT65X2584794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4613f0974808b1276395e23d9b723cfe875ebae7c9b09373e46fbf60235ea3b0. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QT65X2584850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6938748ef46d35897f36fbf2df13ba8fd84790932858df77064ac011e63c2cca. 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/QT65X2584854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc276bf6e8988ac48b326f48e792b50e5ca2b04c75a32b582efe884d8d884b7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:48Z), 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/QT65X2584769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e6185dd147f1255d6ede2fb9fd8f5250af6b1cbcd6db5d4dc63506840ea807. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:09Z), 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/QT65X2584900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cc3d1b050263315470f7d4d08fbb7767269cdba242e5bf0d0ce60f9161d71c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:36Z), 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/QT65X2584836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e5ec605fdfca85d42b4e113a9b093ce09813960e0f39541692aaa699ba3f4a. 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/QT65X2584878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa18d16867e8849169765f7c163610a367f3ae98da9437a21fa7adb6913bf31. 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/QT65X2584906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4bfcb4cec362d45a9599b2fdf169887a85d79e196632a7fed1913b5e9ea801. 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/QT65X2584780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c983fe9ce23fe5d1706872a5976f2af919c5783c0b26423bfbadecf2151cc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT65Y2512402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81def463cb6b11212897c88a4afd57559ed0d65af7595d78579362521ec430e. 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/QT65Y2512338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c3751a35d7f111a7b1a6f9924477067e3fe2a43052580d4a1383b14baa1756. 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/QT65Y2512356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67705b91712bcca50d84ceeb6351095bdcf1e998ffa0975bd4d73239129b0156. 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/QT65Y2512313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabac6caaa622e211ff83c4c5fcb6103fe2bcad4e655c8b37d4691b11f8e6a505. 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/QT65Y2512256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfd76aa371df570804b9cd71ad537bba57a654361f7eb8bbf183fb0fcf5f0ac. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:34:00Z), 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/QT65Y2512396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d704d09e6de2bae101d48adce150678645439c06796e133e52755121f2273e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:43Z), 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/QT65Y2512271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f4d811a02a9014d9640a40e30557e37c903356790a8987b2d64a8ee589d863. 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/QT65Y2512330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1465d9b14dda80d2e7e0abf024db523b2abd56f8f8f2798c61a8ef44ceaff212. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT65Y2512425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b447cf539eb57972d283fe8b2f999b872ed3c03a8569a83578a0957696e0ae. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:24Z), 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/QT65Y2512369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad65e2dd8a867f3ea0ce5517244ffd3a9534473bda17bb110ae1520645b5206. 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/QT65Y2512379.