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 0x85142b4d100b529b18ac51ebde3f5d0137aec0f326f8b33ff3bbfa405ae43f68. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3ab7e6e-3592-48f8-912c-aa7f09ee81e8.json and https://artists.proofprofile.net/proofs/artist/f3ab7e6e-3592-48f8-912c-aa7f09ee81e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xc3ed8bb737bda01b58e30f18ff2a0147c160655915f5aea60354cb098de01763. 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/USA2P2310878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9dfc96934b824bb0118a585329b65c6ec5128154d74a65143853686316d604. 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/USA2P2310887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31d1ea9209599092aa07e89104f612bf30a5463a3283a38213df097fdce0732. 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/USA2P2310884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1409ed0465fba37a41636dd5f330ff08b32e53ab9be34fa8889353ebeb8fb3a4. 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/USA2P2310877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8696440c3460e934d72b3f6ee942edf263978f62edc7dd4ca6086e3612338bd9. 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/USA2P2310886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1409ed0465fba37a41636dd5f330ff08b32e53ab9be34fa8889353ebeb8fb3a4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USA2P2310877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8696440c3460e934d72b3f6ee942edf263978f62edc7dd4ca6086e3612338bd9. 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/USA2P2310886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639bb364352818aac0b5331a13f64a7c9864a75829fcee067ce01484f8f70274. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USA2P2264828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec46106cc7649b3bb56c32e6912945bc039af4733f83b0485f51c9aa427fa44. 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/USA2P2264844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8707e163e94318b74eaa11d923adea3b09a43bb12c2ac6e212fa56877d03ccdb. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:50:15Z), 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/USA2P2311390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ec4bf19a685c3d5f55b4921e2f045010773b275b882365ae725f941bf51a3. 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/USA2P2311391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b75abd5bcca362129f537aab6a2bc3308824a5d31d47245bf126f880f22600. 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/USA2P2304521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc4314898bdcdb1f0db76e59cc3af48c71826349caa5ec0b928e7bf15e74a78. 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/USA2P2304516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7429c1309be1b735b35dee9f7a5e522df2f891ba691a981ab6f6459da0cd5ca. 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/USA2P2304514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76de7693896a5c8731c2c5c43b7473d573bb3b86e6b0c943fcf27bf2bedf48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:27:27Z), 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/USA2P2304522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dad4fbc2277b91fef70f66e6eee014903b6d3f6e9b09a74b40abd2fd3060a3f. 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/USA2P2304517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69647d49384c20fc008e8c7f2d7813c85d8562aefe7bf550bd1467ce78bd45c. 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/USA2P2304497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d9c94fd8f18038d42b3356c1c58c121f4197e4ba3a24cb4397c5bafa6dfbb1. 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/USA2P2304505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8763563626f8ef0d9aa908efafbc60c81ce87d2587ddf0f32d702661655967. 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/USA2P2304501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed4c0757701d86bf2965177a4d5596fe6231876d87f1275faaf42a015e45ebf. 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/USA2P2304502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9dde9a97bcbd2b16df9dfb0cc5dbfc0da43ba21392e335f06a1c4675cac83. 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/USA2P2302877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9e30aac9ab31a09fc27863410ebfeed55d0986709aca459eeb1203ecdfd7b. 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/USA2P2302880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90e5711b0ade146589f8e85c1d5a8ae330dc45b39e58c166ead2a3ed1f3a49c. 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/USA2P2302874.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f59b4496719289d0ca5f0c2be1729c199016f1373bce8699816e4ef84cb06bc. 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/USA2P2314357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48712649414db77ddf3e0350f30b335ea0decfbf7412c3912506fba1f8acf73. 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/USA2P2314356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ab99e4dc94d261ee0c55f0528664578c45265ccbcba985d331ba953432c02c. 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/USA2P2314358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098dd7ce4acfa7b98fda76887e4cbdeb56b81a2a1474444b043d4d28716ba90. 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/USA2P2314369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1409ed0465fba37a41636dd5f330ff08b32e53ab9be34fa8889353ebeb8fb3a4. 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/USA2P2310877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8696440c3460e934d72b3f6ee942edf263978f62edc7dd4ca6086e3612338bd9. 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/USA2P2310886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec46106cc7649b3bb56c32e6912945bc039af4733f83b0485f51c9aa427fa44. 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/USA2P2264844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ec4bf19a685c3d5f55b4921e2f045010773b275b882365ae725f941bf51a3. 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/USA2P2311391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b75abd5bcca362129f537aab6a2bc3308824a5d31d47245bf126f880f22600. 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/USA2P2304521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc4314898bdcdb1f0db76e59cc3af48c71826349caa5ec0b928e7bf15e74a78. 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/USA2P2304516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76de7693896a5c8731c2c5c43b7473d573bb3b86e6b0c943fcf27bf2bedf48. 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/USA2P2304522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69647d49384c20fc008e8c7f2d7813c85d8562aefe7bf550bd1467ce78bd45c. 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/USA2P2304497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d9c94fd8f18038d42b3356c1c58c121f4197e4ba3a24cb4397c5bafa6dfbb1. 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/USA2P2304505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9e30aac9ab31a09fc27863410ebfeed55d0986709aca459eeb1203ecdfd7b. 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/USA2P2302880.