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 0x4c2691812e4e0dbb16bee731d01153e5efefbc219382de625074e3263fff722f. 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/5f7cbc17-6a75-460a-ad8d-364b82cfdd98.json and https://artists.proofprofile.net/proofs/artist/5f7cbc17-6a75-460a-ad8d-364b82cfdd98.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 0x0e50e732484fef224aef597166af694825d6a8906d96499a4ac25dfffd4cc7c7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ782475210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c24101a779e7c1e5f02dc72244809545e37025d4fe984c56525420fe0bbd592. 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/QZZ7V2411332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bf43041486188a93326dadca2df2bb109c70dd25b9e01c3cd14c214e3afc4e. 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/QZZ7V2415235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545651c94e488ada5ab38e532826cedb6e8e06c2b4f7b07d86e0038c5d8759f5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT3EZ2413884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00be82b00bfee429e00f39dc173c57da9f1dfca733e181302f44ab0e22fde68d. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QT3EZ2415944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a52770eeca22c6752fdac007dc2b9b53beeb0e8af9b6e0c9f48b4c1888950e. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QT3EZ2486250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4143b2979bddfcd5b55500eb3fc626f0280405926c0d4de3412cf51e0c4b2b26. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3EZ2436981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b23c71c8d2988519537144062eb5123446da227a3b9f3d3de4227db7d4ba6f3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QT3EZ2490429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a04e49d9c96b402132d53812502dae66d91180ca46b86f1f57a633436886d1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYZ2527452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d63ee3a5761424e6febb7f5072d339d852108932939d180218a48ea669ba84. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFYY2576156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8a0f103d768375166d963f1943a38efa4d8701c529f6bc179157cc9f4aa303. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFYZ2593906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436da89d008ec2249b23276f4e40cdd9e7919dde9564de6f709c1a1bd9c7487. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZFYZ2535682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f138d384fdc1961b6d0e5336cfe2e9156a2b2b56fcac99a8658c539ef8ba8d4. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZFZ32590927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679c641229270dad0817e0ac75ec608ba8dc90d4f46a0e18e55c8a037b9bf5d4. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZFZ32588660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5593e43c982f1f7991140273b807350e2838faea8b501086344939b95ceea46c. 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/QZFYZ2598641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb634c9eede0fdf4d26851e91d1839a2f180af20b6c3dbcb52df620ee7922b094. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFYY2576179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8152b0fdc7b04e03103ce7555d4af3efc9dbd6294494e6a7b404d45c89d1d9. 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/QZFZ62500352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0236d1a30dffc4fc97ececece2b14cccbb120489dfbc7e16b4477b9101d115b2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA52553034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a9831df7e6e665e3753a8bafd731df9a5ade507a95db0579539ae101121ae7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:21Z), 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/QZDA62526470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f159646fe2eadb6af3e4950e283faaa0cd5193b06bcbe7ac9263da735d1dac1. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZDA62530237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bbc35accb12d16a248f98d07aa8db5246f8c3663cfe4cf5f6fb20fd9a2bf14. 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/QZES72545257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce65616b8ccad62194e9dbfefbd228299c5fde24b28a974488f1e27940967b06. 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/QZES82582229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce4285ff0ca12e8e7cea1ad48ff01204a835e21ec85fc2ad185bf797b0da5e9. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:14Z), 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/QZES82544709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefbf49c10fa6040401b4bddae08d9a8bb55901993c1190adb34c94928fa8709. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES82547441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfb3ac94c4a9261aca243df3537676b43028a89119d1b3669f95dd8215c4519. 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/QZHN72525562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626bde513cbff219b8b0af73b6bd9380b8046fa8c9c3e6b6a2956ee5b1291558. 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/QZHN92565320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8725723e1304cc1adecfc112846099eedca8e88dd8678d26d80d9a2ec8c2e4e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMEM2571672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99133a4a9a41033d6bd59283fcd747d8389b5efb4a997f6a744cc4d13bcfd2b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWQ2557956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5477075d7e61fde28a0c828c1c33f664aef9808f44ed1dd3402fcadbd280a5. 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/QZNWR2501553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087c30630ef993739f2a8d96afe0ea40300c079cf59d96840584401bbf25e09. 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/QZWFX2590463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b34d2cb74f0694ebf4a2f7a170260ba0bf013d3bacc55cb87b910074f657e1. 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/QZZ7R2539240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc3ae24baa19f639bf9faedafa327420af5d37652e3a4abd76b08704403bc3. 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/QZZ8A2577720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c89af8379e80f57cc5f204da2f4c93b81746d4831d39b89ac34b93e699d584c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:19Z), 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/QZZ8B2514171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2b71e307ed29eaf8ca04538ff2a3e3bcdb21452a49fab54a9791867a8cfcc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3FB2523560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8643692716df9914b803fe657f25115ce58923c696a740512d2ee7b88a39cc5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:42Z), 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/QT3FF2524197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02a074ce20e4471942449ea42bcd5ffa7bdc1281ac40ba6f618180a82f684d3. 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/QT3FE2538249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a458e79bd9a89bc5c90cdbefb0756a53f8a31dec496dfa046d3a83f09b8b750. 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/QT6E82573952.