thumb|upright=1.35| Wind rose plot for LaGuardia Airport (LGA), New York, New York, 2008 A wind rose is a diagram used by meteorologists to give a succinct view of how wind speed and direction are ty
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 0x8ea21e373df7c84431ac5a6182eb5133bba7c84a09a136735c2ca7259a00480b. 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/3fecd5eb-4eb7-4194-8366-c0b9a60b4175.json and https://artists.proofprofile.net/proofs/artist/3fecd5eb-4eb7-4194-8366-c0b9a60b4175.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 0xa7ad8b6ce9f9638d8f50f1b7f305814fcaa78bbbdf86ece18f1f37f4364e9bd4. 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/ROUM71600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1713d809afb7b1e6db3d89cd63b8255c329f1949e90fc3b20c53a251ed090a. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/SEXEN1700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8177babc9edaa4c5336583eb14f1f005fb91f48acda976c2e66aa320484f4c. 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/SEXEN1700403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef7a381040583f2e765d9c26782a5cbd1366f2540b25914833a9cab94b503af. 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/SEXEN1700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad8184821fb4d5797be4b035546865f92d8eb57ebe7950068d9839e4c8bf44. 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/SEXEN1700409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2576858895aa0b9ed691b1864228ab0988a63ce782c7b8f9a7c61ddcf1709e0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AT8272112101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a49fee16b5c760adac4d775af803f741d90cb834a03857229528a647c1c96c8. 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/ATN262212106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cab30033c0d805db0702d5b9218c5a76d038faba4c316a3e5420402812ca060. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ATN262212104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc779d9cc51ed3321fd3245b2bd26ec3e5e41255730cc637e75e45553c80e6. 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/ATN262212105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a49fee16b5c760adac4d775af803f741d90cb834a03857229528a647c1c96c8. 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/ATN262212106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40f16aac9ce475d2e11a49b56d0d84ef6170f5d9a26b17c2d5c0fdf6af40529. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AT8272112104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbd83eb5c3c4f540621412bb208791f9c91ae0095741c6ca00ba4271e5acc7c. 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/FRX762271331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd849e92b6e1e0ac77c15ca8cb50c3decdf97d2eb8cc9e4487612917eeb632360. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX762271292.
Shadows Over Lothadruin (Mastering 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54849260557aa4088d4e16b86e6338e22c186236d20b22a250aa870af39bb229. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/FRX762271334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c511b12b2edccfb8cf40e1e50a143799e937c60ff5110c67f042d5e1d050221. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX762271336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cceb335236d6dd2fd5ac9071363cf8541958570b13626c099159b5f6d23c0d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRX762271337.
Wardens of the West Wind (Mastering 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69a9a5cbddf3e864cbfc7c5dcb0aa92af2161c488c8a01f5a553290dd9703c0. 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/AT8272425901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7dd098e9aaa2be2581ebfcd1bd5a7221458f30cc7ee861306bf46041bad3ab. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AT8272425903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aef1a4b6c45f74985b9c40ca7a30abeaf8eab63889935e093013847be17b29. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/ATN262425905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec5c6cdebc1b0d4cf853ffe93f595f703aef9b71c7f7c0bef671023080d66e6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ATN262425904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af058ef1d57bfc917cd46a0e1ac5de04937c74831a99fb9a8f110386064a21c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATN262216027.
Back To Life - A Tribute To Goodbye To Gravity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad8b6ce9f9638d8f50f1b7f305814fcaa78bbbdf86ece18f1f37f4364e9bd4. 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/ROUM71600154.