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 0x34073d9abc46ada8759c165d7b64942c93c727df3652ed1638f68f947f324fd3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab733159-8bec-48ae-a58b-e9a4387bcd99.json and https://artists.proofprofile.net/proofs/artist/ab733159-8bec-48ae-a58b-e9a4387bcd99.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 0xe0803b7c78d23ed26ebcb15f80f529100067a76b9ce11bfec97ded05ad70bb5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE72427001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372d4a44c4a891b6d2419f41d884a37da7c491ef937cd40a40ef4036bb3e0a8a. 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/QMCE72427002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3b663fcdd49aa1fdfac74aaa581b6abdd4931d2f26dde466056fba9d5eea21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMCE72427003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c65ac98f9d5f905b93c922d4834c6e95487b3e6f7d87e290df7df4b92479e2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMCE72427004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880bc6835f78b362e328fe66f3a27adbce6da83ee4d9d89acca18ad118779491. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72427005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b0f226ef6995d4a60900880ea600a27b33395febdd9c9425244266e6b14038. 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/QMCE72427006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c8d58d24fc6221055fff977b9da6c0bc16e8d5551820347ee2552ff116671. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72427007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e14a8df4cea2bfb27e53bee3011b3d1116b3813c6afe35122ed8da77118d1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72427008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ba849335bb33b89e9f871cc73c8c75c4b301941536d27adc4dac39d629220. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMCE72427009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ada681578bc8f7a923f02af739f18a55607915f80cc7248accf35cd3678878. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72427010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99c63c81d552730b3b012d2723f11d4a0334717c01f82a3452ca2325d2d82bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72427011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fc47e05f427ddbc506946b0fdd772546769118a62c029510488355d10eca0c. 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/QM99V2108003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c201d4bd9af4fdd68d00b1622231a17bba1a7f8b825cc2cab9afa2c55f6999c. 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/QM99V2108007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaee3afe11d381bae3e6964dee07713db6942689ac8ee2b34d7e8cf81e36ae7a. 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/QM99V2108008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489bfa8998c547dcd37b1047495ae677b069e180ef30befed3b5f473d6ee68eb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QM99V2108001.
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 0xc19e7e88aab586fdc7f6b2c6deac2fa5fa2b0811d820884af47818b5005ce669. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM99V2108002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6786a9046aaae8287abadedeb12bef4bdabc6126983ab55956978b2da3bc8e8. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM99V2108004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd3228c8ff8dbb9d296fda29b5cd65d7fadb8a0ce8bfd6e5b03d3c3236d6619. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM99V2108005.
Time Spent Too Long - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee18e1e613727bc4d68fe8962154a27dd001edd26fd77cb68fd6e69cc6bcd67. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM99V2108006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cd452af3ab0f031031a164ef902997894bedd1a88eec194ce7478c9fcda8a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE71303181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b774bc11766ed45c995036a295f561dd7944b1c44267cd3664e2bb2a0eb22f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE71303182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd9bf4eaaa61148258d97d9a7fd1bd4da4b7c070d63dadcb7df3a7bb3ec4497. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE71303183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaa9ff3aafc49746c4c81301861705569da7db878b66b9a7af14104a93e3536. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE71303184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da34730ef4c13d32f9a9637d02b0de83c56d94ab76087df02aefaf85f01dda4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE71303185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bacb2cf301590a87ff62539f2ced9fb2503522b023e291ed88d381f014b32b. 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/QMCE71303186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187b83c0f4c2a2468a0ce612dc15aedcaaab9a55ba95c0d3662377b921d0b1bb. 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/QMCE71303187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70190399cfbd101f06419bf09e756df7240d4f27f1be1ff97fe2d37830b7bb9. 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/QMCE71303188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc186027b123fd9dcb02c08419b77312669bd61be8a5141cef37d19bec566c023. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE71303189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8af99618af6cc52cc942831ff3e2e7c9aa758922f13ef59d864154ae3518f. 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/QMCE71303190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb22ec1801b4273215b9d57149fb560de9ae09dc2d8e7b70df80ec527c7e485. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72324801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa3e961d46f49d8a922850d5d3b6ffedf5df93bb4bdb5e75026bbd792c16f9e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE72324802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c288d5414a26a586ea14e9884c1d630cd26b35eddfb16850b6d9abe5fa1f5. 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/QMCE72324803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eab7102388a7efc772847457836dd7a6029a4e703ccb5dd5abcab23cc6d938. 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/QMCE71302715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e3e8df0fb0db9bc138f3daccc18f337c4238bc61c384f4bfc46840e51d7eb5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMCE71302716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536aa57d49423a1ce9610d27b71bd1704c6a38ab3fa8b6cb37e1c621a377e967. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE71302231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16947fe98601b0af2d5913e25cce7c9159ee928f8901276b1faed519fa5435e2. 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/QMCE71302232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5093ba2d981f1c66295d2f204d74a0b5e2bd810899c1b7ec9dc3d95105bbb371. 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/QMCE71302233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580dcec0d0f918271a1d79ec0dc280caf19d71f5696119b84c986018b2c41571. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE71302234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc30bc1633f54d90d9a45e74bb245d65eafb77c255cfed81b505b9546f4838a. 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/QMCE71302235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d1ea8849352c481cf43f7d61b7036447a0613147faafb047b3c01faa81719c. 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/QMCE71302236.