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 0xccc5c3332bafe8f236fd7c3e8e30c325ba0a3da34d0bfbfc994c48b0866cd9a6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5558cb4d-96c4-45d8-a311-697c1f4aea60.json and https://artists.proofprofile.net/proofs/artist/5558cb4d-96c4-45d8-a311-697c1f4aea60.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 0x1138d27639e12420064cc40552e8d8cd3c9dec7d29bee1d189aeb0786bd6951f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USTCG1033877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1405b807165ade1f45fa278c526fca5183ab9b89034d389f53e757078562e7f0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USTCG1033898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3931c7b7ab93dbc23b84eae5692b4cf0a68f5f6cf44af2163d6880e8610b6c8b. 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/TCAAX1134188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b0a6a61e5bb347ef10f4ddb6f03a943ced07233761e0cd0b3962b34098ef9. 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/TCAAX1134194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a81e56f865e4d7aee108da141b24ae3cad2f281c4d362a3727942999de75f1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAAX1134197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7bfedfd3a6c08802e38a894ded69cd466ea6e1ffd9118bdc6b8b3b24f3eb2d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:22:58Z), 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/TCAAX1134274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4662282bb1f612cdb7d1c19a5559d3bb3615669c6d9b2676ecbc8605cd57958b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAAX1134291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794f917cde2e4fc401a7c986b3173f5dea323897f4862d174c30e75a01363dc5. 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/TCAAX1134300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ae6fe6a07289e4580ac679694688102304d2758fdc81a7351809f3d9a1dd43. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAAX1134304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5735ff33c80e6c417df1028b8f64db048b996abbdb47bd75f0eb1973fe377c5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAAX1134310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68648d7d59c42a2235fa2673e8c5716240c244fabd0bd676c49a716908ad7065. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAAX1134313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6762ec0ba3ea19497e366c751d88a6f1efc1328dd157616b7d3278dfd4622e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:08:11Z), 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/TCAAX1134347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67da340140dcd74075d9859a706282595977c9ad95d36454974666f8c8d02c8c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAAX1134357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070c3630771c910ff1809559e3871cf19aa1ca13976794c37a89f32cfa2779c1. 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/TCAAX1134367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b872587cbad4e3e01763db8f6b04dad8adda137e3c9b5468e999a19902b3c5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAAX1134371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3390527bc67a38b40add33ecf1300e46c523c4abb9f44a9fc5e9176dd62e67a. 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/TCABD1280230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2c052192ed96f9ab36c46df1a0a71de8f4af676a0dda33b1728e5cf0ab8f13. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCABD1280231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3ec829e6db8b2e7160795bcc22b8b19d2b66e2ab6dcd5b021bddba0257374b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCABR1328102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f0ee6cf37668e6f2d51c7338b8ec77ae29eeb0ffc0248a45f1a2c3d3012987. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCACH1556531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046fbb74f5d6655aa3843445ef106a3ed599f6c5e3b683f970cd30b2e7e5eda. 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/TCACH1556542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651dcf9283d50cf7f8172a664712ad9701fb0f5f1594d627a6408911d36c09e6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCACH1556543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a30c26d32763f925746f02e3de8d49a88d36c78af05de2b52981d47b0eea96. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAHP2320989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45af7994e8ed2866af968c923018b1c7869ec04944f78562a81dac1bad3e920. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMZ92428133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaffbaa9fe2afedf0f0d972913a3e48a0e187a56f8b9aa2c8c9d0e718d820476. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIG2404445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623762ff2960f402f46fae7f5ce7623c40ab468cda53275e81e0f858f713c0ed. 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/USHM82442182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef772e07f5ffc7d55a790dbd8983233f2060ab36a2ec0341270b178ef2ab8c33. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82442181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aecee525c88f2c79ca25fb460ba230022238e57982d90ad0de50eb3f065984. 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/TCAIO2468695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e76744dc6988b5b18f6547b55836ca86dd5fb95bbfd981d48dc7c33992f79. 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/TCAIU2405920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21229f36581314daca6655ced8c27c1f3b194d2bb7040b5f35cf397535c62c88. 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/TCAJH2502550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbeb8baafefcdbc9e1871b682cb0237755f4f13ed01a199d1225feeaba44406. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:18Z), 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/TCAJN2574848.