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 0x85ab262d44703bb599566a8c152b1a121812cff0e4d36ff39d103594f56bf870. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c5a14ed-8df7-4aa6-8f48-4078b4fbd277.json and https://artists.proofprofile.net/proofs/artist/6c5a14ed-8df7-4aa6-8f48-4078b4fbd277.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 0xeb9fdb96cb1b7f5518977301b24096bb2ce43ea2d21b174e85add56723243bac. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ1726241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f10484932e1843b32aea622aaaeff0f0fd95f330d39130af53c83267293b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1726242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c18c5b5ae12b2de729e4e7dfec393f20e5919ecc2f6d17fd9f9fb17e0435543. 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/USCGH1826654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d04baa4ca847dfb516ce8ce623d3af1d8ae144432b60ba5597452050c1965b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:56:18Z), 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/USCGH1826655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cabf34f31aad7f699a4f7c7a92341a4b19a75d38079566caee41d7599d5d2b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGH1826656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cf39034cd3f4a6af3c4e4d50f4b238b80acd72c8655c1e2f8f80193c3caf95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:08Z), 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/USCGH1826657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa33c47d89212097a06222a66fcf100cf267c69b0c921ce73c9d215e08465eec. 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/USCGH1826658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac8835cf7d9383c898da99a9b6f36a9ca9c7bf5f7c4a06a30d6068de1ad25b. 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/USCGH1826662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35c65ef96934d6128074c73d2660201f9e2d71b706fe2b7360d367ab9e497e0. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:23Z), 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/USCGH1826661.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d00e63346d4eb72cacb0d6c25e1bb25cc73fcf147b5da28deb599a8211086. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:52:38Z), 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/USCGH1826665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350eb679899461fb6cb3925114cd9652e5b37a6609e4eeca338e4c24be32e127. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USCGH1826659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86479ab088cd2edaa9a8410b75bfc3ffe7665813555f9eb0d539eb0ba490b67. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USCGH1826660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b1c1470c3245e94706891ad4c36883be288112683f0ae2db8b98ba1102dbd. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USCGH1826663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf50047a922925ec0e28cba60158232fcfbe199d9c03b3fe4d67d8a852b8a50b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USCGH1826664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e08955a528652be2bb55cbb3172d86d62381e819a1221085d754fb39e4cd06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81489457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ffd7854edd8814463f63ebe94e0b63a8b084d8748f5b4f2fed06789a53ae19. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81489458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124d139688f85af9e7910c14bbc998d80062c8185460fbe01ab633e92eba10a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81489461.
Please Consider Using This Song in Your Indie Movie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af878b2969688cc32286373f75718a9202545cc33b7eb69a49dc329db44d4a1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USHM81489462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f501139b253ca7f365e3b116dbe49c8b4d1dd1ba5299a6a8bcb9072745b3b5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHM81489459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c16f32338a8553e7a72477f8ba19e494ccc43c897fa3947140cbd276d98a87b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM81489460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244738e33b4849873a60d8efee71682cfd888228263c15e4a03de6f08a5b0d16. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USHM81489463.
You Are the Answer to My Security Question
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef822763f6bc42093761af98719bb26a8d851cc5d081e173f31feafe6e60eb3a. 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/USDY41669806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deb515fb1261e277f229a9f38a16a0607aeca3dda429da221e42f49fda79a07. 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/USDY41669807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5d2e11654c390fbb68a0d5262dc0cddf6c9d7fdb01c39128e49851f8572c99. 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/USDY41669808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9723c014f61d146335c77831129193b72a202b10d4fe05a22bac4f6217bcb1. 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/USDY41669809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc188cd5f526f87502414e284ede89f868b246489f0ade9d4179e7572ca91fbf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USDY41669811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947605cea6ff1e9c96a7baa3eac82b794a7495e5529d5e3db87e8bbfec92d8eb. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USDY41669810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9942cd1a3040d22c80f84837dcf9ac624b05ee9fa45bbcf15eaa1aa8be742aa3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81442320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd42a43264f730e23475d1dd4e1d084fa50aa9a61592975abdf3d1fd4944a271. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81442322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16201b24c147b434741d1d63e5e25aca117719c90d554ec782052f534d365264. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81442323.