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 0x871afc7434dcf1c4c1ae0e4ae1a452a486f96f27dbebb2249ab9606e335e5c3d. 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/86cc7029-ae9f-400d-a6fe-5ddd8f20d1d8.json and https://artists.proofprofile.net/proofs/artist/86cc7029-ae9f-400d-a6fe-5ddd8f20d1d8.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 0xf67dbeb032b786adb9bfb31255a7edee3198c05a04739e4bd5ae655773083277. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEWXU1100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c77881839f02880eb3f49fe8139b6dbb385c6208c7703c0123074886fcd75d. 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/SEWXU1100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2791e1ccc5191ee6ad975dd94187c4c53ed961d8d1bbdea54b0eee947b0410. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:30:35Z), 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/SEWXU1100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc80535c620c417b28aeff7ab930455ae89cfdece90070d8d8686b29949ff834. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEWXU1100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e35b2bbc8eec40c08e217c271d1e9c86aa838f5dee5b0e4c2f11d5a27d780a. 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/SEWXU1100306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6905ee12293aaec925f6c7886608895c5512e2e457b72d8c41f6c1683aa5e2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:16Z), 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/SEWXU1100307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72f7b3747ac77d0c75d09d7f7bf267e4a9746f33d7580225c863d3d9c8a739. 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/SEWXU1100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080d9ac62b1dd6d81833bde1c76672346f38cfe7466cf69d93599df335b21cac. 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/SEWBD1508702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59da284f7afeeb552898e604f0171abd389efe2e33966c257727386890d8a7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:00:02Z), 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/SEWBD1508704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7801486fb0262ce2002b6837ee0fc461925839ff1243fc9c98d36f46cb5e434. 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/SEWBD1508707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b92105549da2bda36773b26401329e6ee255292bf0b8ad8ce2de875d2ab3df. 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/SEWBD1508708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d1e4779feeba28c8f77337fe9869fa65bd69f29a7d007a1ecf3b061bfc596. 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/SEWBD1508710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f05abb39b660b7b55807cace88fca552c3f05c75761b18250d8f60f8707518. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEWBD1608701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4082258654a98921c81db78d1da94081a3bfe81221007e6ea00cf91232a916. 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/SEWOL1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1006816785439833351e0f8119b14f7a69fcbaabbc9265f8bb9d2346feda512. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SEWOL1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06648e536feff2300d33f93364fb744422c2decd43ae1e3805e78578b67e809b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEWOL1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7981942bc357ed4442d866604f96c0c64b890701b2fefce9c06aac88649367. 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/SEWOL1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d786e66b94574fb51346e836c82b70e6facc1a013c3fc57c8b51237e2dfb2a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEWOL1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02febfcf2b4e507506ce66eb4fe755fe4638b4fbaabdfc28a469e6e774550c6f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:59:27Z), 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/SEWOL1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e2b08af453cee48e7a14ac8410cf85d9f3f55a8d40f65b1b30f36b8cc397e. 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/SEWBD1508711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4166df25781daa0c94cd381c9cad1d91409981d1c77a1449d877c37e198f9c3c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEWOL2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada00d9c874d670d33c65c5166d2b2ea8da4f2f80b445fc712b2bb83147ae122. 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/SEWOL2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3650b3f2d2ac7baada11cbbd8fecd83a766621ee9ad4ed1414429ca541ceac. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SEWOL2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e23944c7b8f9934ac366453edcb3e83996ed98a32db0dcf529cbef2aee491. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SEWOL2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33af33e2b7cd2984a0f3a8a5b8a809cabf5914116ffdc720db392d9af6d90fe. 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/SEWOL2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391926539dc33781d50d9b7282b1afe8560a1a24ec78b46c4cd3eb7cb31211c8. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SEWOL2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ddf5ddef7cfc27d2ef0f77f56805e55257ceb2a91d40550b5afe6dd279d2cd. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:01:54Z), 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/SEWOL2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1f2cf6fad3ebe3a3439c2a2bb2e6d294ab8353cba9bfb9f4465df7bb816a8b. 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/SEWOL2300201.