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 0xdd0c776592bc264051bd8cce726ba08b6aa166e0ce73d79e4ff66eeffc13eb69. 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/cc840442-a2ab-4849-b2f7-71f83eb730f5.json and https://artists.proofprofile.net/proofs/artist/cc840442-a2ab-4849-b2f7-71f83eb730f5.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 0x9f294cd2ed85befc61787c2e526d274dbe8f6cced62da60faeaa0621dc4b569b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:24:04Z), 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/ESA012196402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c0a3dc55c9840c9400518cac50cf6060a0947a47888c905200cf53b26f83bb. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ESA011671830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3125757b2b83560ce1824f70730b8cefbba3325fffe252a78d12951153ec15. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ESA011580065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6d2c7ea38bb54fb6d1bd56d681c58aa950c05f536076d9d70601fef3b3fd01. 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/QM4TX2204790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03e16f7dec48a175119585ea8f6e81ccd7e46e4d0dfcd1ec32b1a681267e958. 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/QM6N22273943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9a2b34f801b2f99436d025df58569a320d5fbf6921d24977011ab746d603aa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM6P42306136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496e883346bf7f9adfca655ecc381bf50d87b3f69e371a7ba905f695a8b68f6. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USA2P2456611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36815a62cf3c1ff2e592b72f83ce7c068aa82a99844b36184e319295976c57a7. 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/USA2P2450406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f1298690b03540b6877680b2af6bd0cc45174e672fc179eacb7f36659e2023. 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/USA2P2444841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e855e6bd0dc031d418c2319c81a03843ff1da502592931dcca3bf79d5b6ce89. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P2456753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4e4c78437356c2a196045f8e6ea72e5e211b75cc98bcdbe3ea47771c9767f. 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/USA2P2501974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e768b0be3c49a514d4384622d1ee96e91e0fd5bd76424d4ba4dcee59fe84d44. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USA2P2540825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecd969786e4d231407111e39731f5bf268ce9276dbc070c35c0904a27c1cc66. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:12Z), 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/USA2P2540826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7101b5222a4132828d17d9f4f9f3705bc0bb22fa9bbc70e8220c8e7ba31c2735. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:56:36Z), 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/USA2P2540827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711a49b30bcb3f068f869e60963854d5131c55653ccb9cbdae33e1995b0c4037. 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/USA2P2540828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5565c9f90e9de9bc98af15118ae3a748780902fd8f49f14ef83a10122809549a. 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/USA2P2540829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9924834a07b6a46002dc4112f6077672ab8716a9c10b21dc941e7c9fb0189c. 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/USA2P2540830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeabacf89f5b58e26f9dc2c343cba82f5fbe1ef96ab7a53c43ba99ffcb3dd449. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USA2P2516211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbe7b484e3fb6350076682226b397450ed94829fe394c76d51c07323723f0e0. 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/USA2P2523505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756358f38acc62ff125495bf585b5a66bb84d0af2059c870719dab7dd7cac81b. 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/USA2P2538606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e0eb8923fbafeeeb1df6b1223c180058587b0d3a2f57cbeca6e6b6c7af56a. 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/USA2P2540832.