thumb|upright=1.35|Illumination flares being used during military training exercises thumb|upright=1.35|Flares being fired from a ship during a fleet review A flare is a type of pyrotechnic that prod
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 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 0x60fa41daa5a9e958899257a9362476f10269fa1faa950963f9324c9dbc8de35d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88c72d37-cb50-4c85-951c-8cef9764bd25.json and https://artists.proofprofile.net/proofs/artist/88c72d37-cb50-4c85-951c-8cef9764bd25.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 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 0x46d94dff7628fc8854701b5435113ef74150e76fd57b76b6d8a7db9511090436. 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/NLNM32303025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6f3efe2f047d67233f690252d1e196b7dbce8c713b2895a7bea0d14b8de50. 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/NLNM32303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55715124ec6606d2109375df9580c876070c6eb8d1d6605e2c90ef1e57ecc889. 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/NLNM32303026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8c9b639caa85ca15e7117ac57ff21fb9c25385aa0388cd3dbff50e58b9b6fd. 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/NLNM32303038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4272cd33422560d3b6a824d3867f15261e49b035447e3efab03bbff36befa9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLNM32303035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b03b71695623b564dbb2bdddac6f69942d286cde1ae5f84bd903f96f16bbef. 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/NLNM32303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594aab6475e59fc38179e65d1c004abda33f084254d2d829798bb3893bb7c379. 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/NLNM32303029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6f3efe2f047d67233f690252d1e196b7dbce8c713b2895a7bea0d14b8de50. 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/NLNM32303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132c7163677b294a60d8e9fef3826789a81bb313f92b3e8cc768184fee0c1a8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLNM32303034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d94dff7628fc8854701b5435113ef74150e76fd57b76b6d8a7db9511090436. 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/NLNM32303025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132c7163677b294a60d8e9fef3826789a81bb313f92b3e8cc768184fee0c1a8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/NLNM32303034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132c7163677b294a60d8e9fef3826789a81bb313f92b3e8cc768184fee0c1a8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLNM32303034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132c7163677b294a60d8e9fef3826789a81bb313f92b3e8cc768184fee0c1a8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NLNM32303034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6f3efe2f047d67233f690252d1e196b7dbce8c713b2895a7bea0d14b8de50. 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/NLNM32303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c107ec823aad7b919acadf0681a0ccd89f224298716d98515bb526dddc95b1. 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/NL6HK2400007.