thumb|The southern ridge of the Mt Sylvia Range, a ridge composed of several peaks, viewed from the Lishan area of Taiwan thumb|A mountain ridge from Mount Otensho to Mount Tsubakuro in Japan thumb|T
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 0x8e6e90f105b4b6b0a772ff12fdc741af1a8bcfbe1468e79a5a051994db8c5fc9. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22cb0b52-af49-4028-b14e-c836235b550d.json and https://artists.proofprofile.net/proofs/artist/22cb0b52-af49-4028-b14e-c836235b550d.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 0x1a4efb70511ed7f1dc9ff5b8be475e6b1c46d86eb1afd7b848913d7a386c3e2c. 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/QZMER2186224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe4eebd7a01277f71a838bf0694a470577efd949cbb77aff80d6911adb3c11e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNC2538087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126bfa05b4e64fe222a6f14027030f24488db67f9e8da25dc3504eb05132cb38. 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/QZHNC2544983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b784c9c5d1126d5bf449d78741173ae37948df1a585db6f78392b6ca9a76fb1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHNC2544984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd020292059fd536744cbdecc48e299879406678d03483df31c5bb08833db187f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZHNC2544985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85375eb62dd408e2a942b79f5d16cf59b059f6dec5f8d83224dcb470126f3278. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZHNC2544986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086fb8c01fd2a1b3a7b5901abf54fe917ef1ffda1bb3804ca891e84246b87143. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZHNC2544987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc54217467659467e769e6e729fe3f5c8b4f53cac80f0f3d9e26609641c073. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNC2544988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf6c1980cec953eb14ef2e2588a696c985ee4c080505856e853182406d3b5a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZK6Q2514291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacffc8685151212f28c55a0f98cb45f1c8ab86606e628e2ad0399a40c209a45. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZK6P2545777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f50986225c01913f5edfad869953645344d9a106046f6fb52ee4395ff86bc. 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/QZK6P2571758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d60326981d207847c0631e0a77a4f78693b993d4a72c8e3435d24f475665f3. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/QZK6P2571759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7e369a6e091ed576391bb2d0d06da119ecb58f419096a23416d1f3c3105556. 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/QZWFL2583917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc199fa50411a51efb9bce6f7fcc734011a965b1c4a279e39f35ad31749aede14. 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/QZZ7R2514155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbe920433f1c66e89f723f964f292aa35947f2520d0972d7720f8b3de11d3d9. 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/QZZ7R2514157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208190f86f414921fbd75ef234b664c3ef147178b322ca204f0a78b30918f0c0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7R2515237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8982707b0422043cf120d221b3de5b48724fe4b88819ac6b898d4c25e615ae. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F72532692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c3b6181c2d7e3e7d98700358b4de35f63d4ff4df9c54fb39d308a56fcdb91. 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/QT3F62536780.
Golden (KPop Demon Hunters) - (Metal Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb168c859633873577fc822ae4b37d2a0eda66d06e6e75ed3a89c5923450befb. 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/QT3F92592690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494564bd62ea2fb06d05ffb23c338ac44da3ba47610069bfee1b92ff72ff08db. 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/QT3F92594579.