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 0x38f3ae57ff27b825870e7d244e6c3f527399266460a0fc76b370a3ddd573caa2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0c0fc68-56d9-4355-ad29-abdcae846c6a.json and https://artists.proofprofile.net/proofs/artist/a0c0fc68-56d9-4355-ad29-abdcae846c6a.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 0x72c3e65d21c10eb8fbeed147823b15cdf4f3f9b2e07af5efa9deb0f3e786c9d5. 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/GBSMU8312325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d4d6eb4c43975c737baa94be3b6f143dd32ddd2cb81a8c10d528b09e0db9f1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBSMU8312327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88def5779415fa84c5e8812df83a43bdfbb54f429bd3b78607b970bd373f8a21. 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/GBSMU8312328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016837f8645ca1e3957eb39e6c95a1854f03ec8d340644c0f3da202cdd6d7581. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:18Z), 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/GBSMU8312329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21dc78f120700206c3de83c7b74bd55383ec8fa9b7661d67012a96ce09397e1. 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/GBSMU8312330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2786e574d973d8b2e41d7665cdaddabfaf3b9d26cf968f55c66279bcb143563a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:40Z), 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/GBSMU8312331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cb177ae30aac898fad33b43df54ab6b7e8fd2e97d28c9fd7a811c07e8659a4. 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/GBSMU8312332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcfa0c61086a9f5258f50a7fe6539026000b0d3108b903d17ec0c987ad03f47. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBSMU8312333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd39b0e828d975c4c307824173166da1b104cf57e4d804f2430eab95f4e52797. 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/GBSMU8312334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd87293bf84953194fc381e8c4d0cc22ebb30d91b8dff64676e513d7e56480be. 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/GBSMU8454697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926eb3500933951e72532838bd64901d1f6df36341ab4cb32d98f68b0835526d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU8454698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9472e2e10defc757a7ab5d4a6eca1ca31af840c299c5007e0b79b246f8564118. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBSMU8454699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaff9b67880d79a3a1a59be15e53bc305de6f1f50ea0e7d65239da26a53477c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:50Z), 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/GBSMU8454700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f526fde474438fcf47448a6b9e4046bd7e187e3c741207fb3d6621eeef4737. 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/GBSMU8454701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b874a55323226c2cadabb9862f0055c0d5197406f1761f7da9b74aca8bf2681. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBSMU8454702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861d31bc697dd9704a2efa1b2d149b2ebd3c3ff43af4fa52fa867b9f2b31d219. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:01Z), 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/GBSMU8454703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20882b486b0bfd9061eda5923dba7b35b8919a833247986a8c54530e5f6f3253. 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/GBSMU8454704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe460d34a0941a76ffea7a67b85f26ab2b2b80db42b95dc5f934f1ea61b447cd4. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBSMU8454705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebfae341e3603bc28f97ea19e79c86cb52bd236236e8360302ea7c4fae117de. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBSMU8454706.