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 0xeb157b743e5aa723c69f9097ab5d33c5b7ff27e3137479047e2d74dec3107308. 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/ddb21e05-34eb-4e05-9576-04dc706b434b.json and https://artists.proofprofile.net/proofs/artist/ddb21e05-34eb-4e05-9576-04dc706b434b.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 0xb94ac6fa93bdc3443c12192c30085b1cbb9489c0af948a44a37cdab8e9b85097. 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/PLB841300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b004a0a299b7cb8362337a8f1f658313030ee1cff18604eb7de2f3bc417ed. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PLB841300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4192399efcf2cc3057ff85055d2c273c9eee503da3a3a6b2b336d6e49d606b39. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:33Z), 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/PLB841300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914a5dfd9391cb4caf5190655086d1fb881a2c454a392199df6fb41cf80eba8e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLB841300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea18b745ff7781b2bc03b77cea96baa64f12bfaea562118e5d93634b7a37d42. 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/PLB841300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b2f0a8772b94443ba691b8d6af203ce03220b9465f66b140b77651eb86a83. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:23Z), 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/PLB841300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32af9eb72379a4b6ae3a8c2e44d78c62084933c447deb8072596d47e7ba6a035. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:00:24Z), 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/PLB841300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad84e5cbcd0ddd58b5dcbd8da48306a1e9399d9194a31c7e6206363c9e9fc11c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:17Z), 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/PLB841300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1ea54d6d5cbbae472111c8d179f7713ebd38f495c2b339cc5ff9ec747499cb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PLB841300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db006eaec3abf9a43872d0f0803b4f12f5228685496abe26d3d867dafc99e6e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:24Z), 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/PLC070810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b2957dd4946bcd97028ffa95cb669535aef8b497c39fb678721a5b36149e2. 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/PLC070810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c60ffa3b9b15f362fae2ab5bf51a8cbe10d691f0b9c1412208635d5425b91. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:19:10Z), 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/PLC070810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e133353d12526669bdca8128f0a685f02646ff9a03de457cabbfd1922de218. 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/PLC070810005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828e28e5ee8f0f8a1353a19236563796273f873cbedd1824a2b3cd166d468b98. 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/PLC070810007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14066336aa4f68b54c51c0b4a1062aedfa164f09e1ef1dd225521a1ed0e7f6b1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/PLC070810008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b56bc8415bb234ced188fbf1553a56f57198d31fcd5bb4a7b9de248bb0b1dc6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLB841300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d15e8309fe1c9806bc24f20b1f1d61e8bd241a2ff8f81c6deb463ee3d5107e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/PLB841300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d56dd1fa703c5367e19c84196b324afda214b614048672b1a01409007e05291. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:26:20Z), 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/PLB841300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe277cc6d71d07356b7cf7d55879e10f1a36b539180dc58b60a8e0af875b1f6c8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PLB841300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13124a4eebf66de5a4a01c92520551c6b371310d7a70f90ddb77d841646a55f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062407378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d1c529a34de4618e95ca98ef404aa07f38a6f9a2c0b2c1397bad4712322423. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLC071001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f389ec3b9500ae8c870bcec5f3c25a73c611fbd44ea0ad08a63cad973d9db6e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC071001036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb326629b381b9d7a2bda6f6b8219335c9e66aa742f6c976ead97b818b7f63c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLB010900003.