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 0x26db73aa037e28ef47190fb413d648486b0b6013a49c6ec3470dd1bb82f81288. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e14fe46d-dc4a-48ac-9ad5-2e5517965c1f.json and https://artists.proofprofile.net/proofs/artist/e14fe46d-dc4a-48ac-9ad5-2e5517965c1f.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 0x91086822565fc412fccedbcac050b5aae228fb0814f77cd3d16af4ec42efb234. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:41Z), 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/DEZN82492425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a94e42d4212a19ef663cd491cbfeeed376252bca90e4fe309a64820123e2fe. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:12Z), 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/DEZN82492435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d88f7a8810aca4683a471697be2bf4a13633c449e63fe7361e62b23312e506. 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/DEZN82492426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1ecabfa7bbec139df7badc1c7d2a3dbac61916e16f62b06c5beb5c1a850fe9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZN82492437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf430d709dbe7259d8d7cbc00a9c4d230533df298bc22825f31cc73d89dbdc0d6. 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/DEZN82492430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584be288d80e7f46345ee1fb0da5a639d84a860294990c337d81c2932143a5a9. 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/DEZN82492427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c1ed6059533964ad6920e721aad6c458907e9788a5de1a2376569325480168. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:27Z), 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/DEZN82492429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1f8bcc0049d1cb724f12610b53b92c1d7411737a95394b6fbfffbfc824dfb. 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/DEZN82492432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1271b0f8e9b32efc56ec4a30f4f9f1cb3e0ee1b88628b4cfdbb6c909ae6282c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:48:15Z), 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/DEZN82492434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827edc26bf54ca6ea7e3faf4b2950ae7c38e549b94b43f612856fa094ce566b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:56:54Z), 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/DEZN82492428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78be42fbf3522364ee73cfc5a154d3253148cf86b8a2e00edaa7b55b0b6f3e7. 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/DEZN82492436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502f9a73e151e48fdee1d76b4f9e55a400e4e9917c006cff216b551566c08a2a. 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/DEZN82492433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07056c7425865bcb1967f0c71d580d17581f7d4f3173abb16464c1f63a5eebb1. 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/DEZN82492431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91af7a69288f9f639c901c4ea2f05e1e0235cfb2127630227dcc97d5a5f2f335. 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/DEZN82492424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f95f96b3f7115c3fa2d0b6efcb4d90f3e4b5c82626ac0a31a9928926c517f95. 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/DEZN82492466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e7d931858a621c0d728a5d8b1c0fd1a76fa85f54b0449bb21e14396fcfaa69. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEZN82492467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed3fc56dbe810c178ef8beba93e22eab69eea828e27beab1dd94bbaa33b45d2. 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/DEZN82492455.