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 0x5510ccf03a6395eed74a1cc1ac071c9c56d27f9608f50214a2b7b117dfdea7f3. 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/bec74f37-bbc1-4b58-a4ae-82c728b074b0.json and https://artists.proofprofile.net/proofs/artist/bec74f37-bbc1-4b58-a4ae-82c728b074b0.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 0x96e9e6fc6b84ec6bf1fbe811547bd0a0da1dc040eb1d253720b7ec8b8bc06964. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USHM91954348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35122d1b427bf89da66ac96f312f9dafe3b74ee5364d84d480741ae1d7c431ae. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:29Z), 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/USHM91954352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866b16a11ff38a0d82bf17e04ff4597108830ecf8a884e5cbbec457aa3b85f7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM91954353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c84ac8ee5febe5722ea86939050bb3a2806d8c6b7cc26fd25026018e84c6de. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM91954341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0557461d05a863b9714cc1219f499f64f02788850cf37828c186d62c99112417. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM91954359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aec2faa8384d825c66e1705353754894b14afb002fe63c9b7dda4f27cddfa83. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM91954360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6a4409509b5883acb3cce740cd0db4c47d5417ec57ef225c173ea5d8b5edb6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:01:10Z), 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/USHM91954361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d6e30c0d76e43c752b5a620434d1ac3b280df3ef924f7ec7525f76fe1d4731. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:29:19Z), 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/USHM91954363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59896ebc3242a56438c9c6293660f5e749380bd1f0520c2df234d0c77dd6b8. 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/USHM91954364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326114609e32d6375d958a61467a4d1d62a46e3eb9e46fa64f56c2e6a9ac5519. 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/USHM91954330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fbd4deca00dc3ab8b15c1dd84d12a4d718ff8583a1b1d6fd0411ebd5b0f854. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM91954333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6416ba51c8cd2fb8693e2a139ce8dbe19ba7a3aa662370a716200e683770e4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM91954334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580171b319ecd8b40c699e9af8e1dc494da7f714b7b5f5983aec96c529a26daf. 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/USHM91954337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb48a215f605b24b799f25ce55e5a50713b8ce23951371b7e9959b3c2305e4c. 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/USHM91954339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa031b3cd37cbcf0e140360613545307bb78278c3144eb93c0c4af1ab4830ed. 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/USHM91954340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c06699667ad8bfdbc3ac623367201eac15200d821bde39c51582c7c43a2a70. 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/USX9P2027368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61701dbdd806c5236d9286febc7c35c86787239eb0e9c3f1424e6ad51d517142. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USX9P2027371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4b519a1d691df0112360942a5b566f2fb26edbbc7e3031e7e43c87d4902133. 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/USX9P2027372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e5d1bdf00513805ee74b74dbb28e56d81a51a3edee838e446fd8dd352b1874. 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/USX9P2027373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61b6124a8248cbb266cc661090fab6636a06d8f9be052d2df3edb2d194f9adb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USX9P2027376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde3fd4217cd86e7433ed1f8c0f97902918be7b47b975a84bb44d938f17028f2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:27:34Z), 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/USCGJ2257524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811607a27d984627be15690c7067d09df5a2587a56390e1310f826f18ad88d0a. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USCGJ2257525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a744c051a65678936551bd020c19aaab7e525780d11b6b5f7faa8999e0d1ad8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USCGJ2257526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa621af254231e95335f0ebcb915b6e7e3808c139934d406161700859ca466a61. 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/USCGJ2257528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c3c480c31b3e4b3ab00198d9517ab77982dd3831d1d16cc77e3f4f3a2711ec. 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/USCGJ2257531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0545201249b34bc60fc4a44495e3971525009df251191f0eb4a1ad94117078. 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/QZNJX2272541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd039d63f14b3205bb59d22972712ccb758c5772b3d59235c821130788383bc18. 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/QZNJX2272542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c62a998a80cf8b69a5e684b28a104ea4eb202f10b3c37242a8e860047c9f59. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:02:25Z), 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/QZNJX2272544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41653aceef6a55413e9fa061eec6f39ba97bf0c626c28b27e96353057225372. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZW9L2209695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32179244e6d45bf3b9a2af93c8df1c5cc206be7296a26b3f8bdd05ce8f02f1e4. 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/US7VG2393286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d45a638492032b5eb2a56a410972eda217b0c11e0fcd9790f556f65f17687c6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:22:05Z), 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/USHM82337030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118968b631cbb7ee570e149b62279897cd3570b4554a5ff39906bf130974554. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM82337032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302fb3c309b45f365cdeded1b69f80192acfca980bf96b5fe3d0d5da5df8775f. 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/USHM82337033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba1a9c6de67af4fc1dd0f9d9ea4faecf97cae623f484c77eea44504c087d16c. 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/USHM82337035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e65825f5cd47fc76475e34b724aedc492cf4fdec4064b34de57d3d0004f6f. 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/USHM82337036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bc159caa3b61a997714f2f399c0ddc287186bfbfc0f4eb9dce8b43b357672c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USHM82337038.