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 0x287ade0abe7b76ba7e3e22ad1259ee7bf26561e47b9e60ed328f42c81337570d. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff52a493-1df9-4e49-9718-3f0c1aa056be.json and https://artists.proofprofile.net/proofs/artist/ff52a493-1df9-4e49-9718-3f0c1aa056be.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 0x8c6a31b53bf7bb92dca68475fdd9b7034486950819df77d5d8994b515883973e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:37:53Z), 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/QT4K42599996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd569869175ddb0baf6cd5412be194ca7dbdf929fef5de799f5815363e4b35. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:00Z), 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/QT4K52501927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd1a55c1e7bccd8af375521a687e650809160f9215d6c78ed4829512fd11b79. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QT4K52501924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c86a2b398d2efd801390e7c78eb93251c6e8ef47434ec45f34965a3cad3dc. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/QT4K52501922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead28b72fe568febd09dd94a63904e1e25fba0fbe97514757a6b33b62fcaf5c0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QT4K52501919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab62a25cf2f458f8385fccbc24ac641a31b38315da0d1558b296e5a4e1a0c0c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:30:09Z), 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/QT4K52501917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff5c1b142ceafc46c7a2c1cafd3feab885ae758af6199db6134759e871f133. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:15Z), 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/QT4K52501911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1e8f0373a239c7d17525f40fc22648acb478fa9343b0c499ec3ec0c21154ee. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRX872574288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8704b92a1b69ec6f73b8374afeb1c805365e3caed17ae4820857bd457356fece. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX872574289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c35ab94a4ff60110c7c53c5e23152b3e1aaac2dd35c696c692651c20de9290. 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/FRX872574290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d802bcfe88d532d45d0abcb16477c452933307a0c1766f1545aaa4c5c8ad5c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX872574291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f737d5056b77f3d0b20725a89e1627608393bc1b94551d1afa4b0652747716. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX872574292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ece99958bb0a7ff270eb8bd4576f92cd072b04a8a287ccacecad41ff7ffe21f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX872574293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd053cdc7efbe6bcedcb73a0b83c15aece53248008915a952c021da46c1f7c200. 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/FRX872574294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8257c8b73dd67d02057a1a2d2297a4f35d9ecfc191d543a8a287d722bbf435. 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/FRX872574295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c1f2c1d9092fd5fd505289b2dee063da7c365e721d87a17b5393363fb962ef. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX872574296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19308a291cc05c8db9a384e0702d97b62c3ce13744f7d36df5221a6ba0cd41d7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX872574297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891f9f283cf4bacfa359f2ddb05830baba4adf247723be94a8781ade84a566a2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX872574298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5626ecb6613bdd9863b07110529373b24d607374515b0b65efed42bff68e28af. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX872574299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb7694adb87d8308ae2dae1b049a9761b0e6e982972888511a54d2c36148d2. 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/FRX872574300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20d519247bf1f22786e3739b9a90254f5c86d3016113ca791eb9c7f6d9fda87. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX872574301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ede7d6b75eafb8eeb11d95798edaa4838ab22c334ea1941a6820aa485cf9c6. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:15Z), 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/DGA052539663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e9c7a3fa0e91ba337ae3d56ed36b1449d2d648811028a49a5ed2ed27e21493. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052539664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408709dd5a81b0040a2ea63122c4a1944499a59215f054f952d30cbebea846f6. 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/DGA052539665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bf21ba565913e71b65e628692d3b922f466e0a6bfff43c66fdfeda9d4713c5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:49Z), 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/DGA052539666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1657ff38a69c8db93c611e1e0a516dd20561627c0726abcf33dd06d2a71e33. 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/DGA052539667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb864bcfb3eb92e3d69dd511779a7dcf4b623c064ea911a0583b0b6638a01cdb3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA052539668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62d722249a90b3868650fdfde501005ea160a758822bd49081efd7b233c2eff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052539669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a76a1c745e382b04df1d5d324ef1f80acab7f5977ad8be18b7a72b12247235. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052539670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc026cf8aa5c60fe48d4fbbe3f558b6c1dd0dd43859944ce14378fe0cd1d6e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:56Z), 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/DGA052539671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014fe35b7760beb7d7ddc62bf36bea78e6b1e697d5f289c7e93b281c421b9464. 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/DGA052539672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b35459b6d1bf06e32ccd9763718b596a9a8b68707c8343cf3cabdbfaa1c55e. 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/DGA052539673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc3975189f7c21b4611251026e70fda08a9e9d65905cf783110867ac183bba8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA052539674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fecbe0e78d6eaab4f52831a37d4fc8b09da57dff2e2a191567279e5052a63. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DGA052539675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d33bc836b47d968e4d2e5c60376cc3535a295c0d390893a8a4b41b75c9fb4c1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:02:49Z), 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/DGA052539676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e584877dc8dd1b8e20d39a5ad0f19c8cd08e8b91bc6013e42bd5a47ae6bf7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:42Z), 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/DGA052539677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437171537347f1e8087b9f00096a79bba717466ff030c03f75c0ada94f3bd1be. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA052539678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef9d65e0040ccf257790d3b12b122809f18a7cf230f0d7e5990b77cfd29300f. 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/DGA052539679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1614f7341d5e131df69bd567127af89c7d4015ea13aa9e3c7fd3f56af226694. 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/DGA052539680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e376ed42d73ac24492ea56d1500e1b2b37843027904a45f4efbfe6b65cdb72. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:36Z), 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/DGA052539681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0fea692390e567074d90e7c7b216796f3cb718dcf217f33a64826e904be5c8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052539682.