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 0x40bbe4a823bc1901961c7df16f844710e93ad0253db0c959fd8b1310d1a960dd. 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/cf74e0e3-4023-4c77-888a-392ce2a7ca3a.json and https://artists.proofprofile.net/proofs/artist/cf74e0e3-4023-4c77-888a-392ce2a7ca3a.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 0x2ef64297225a232df6a52ee46953beb5cbba8d267094648b2335ea0352377a86. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CACWV1751890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec97f0573cc18d9572c33f6542b268bc237f59a3edf02a44e6b806e5a59cff0. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZKDK2114714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb567c64bd151e8584cc591b74ace117e363135afec2684c7c82252715741d0a9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM42K2158665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39113feab0b5e330b10718b8a3c9d67eb222b1717d7df9c30bfc2275fd134bc. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-05T11:01:08Z), 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/QMEZE2147513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7286a3dabcafbf8797bc6780fb6a44dbdf9f1b90e88ac1d6d87c705c14366d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZHZ62086587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb220fd67a9e2bc36cb7dd5f7000d593a2cc117d78dfd7059bece6316ad66a9f9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZS642149453.
BEPRESENTINTHEPRESENT / STOPWASTINGALLYOURDAYSHATING
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f8eeb108c02ccebe3e4b77d9ac5f31155a1abe1359dce870d38b5e3067ddd. 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/QM42K2345712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4414d31f5459d83e651ce44fd90f8c58c656cac177cd7f0e66a0bf72b41d6fd8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZS632285063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecbbc0677f902f7218d570a4bf6cdfbb3c35825544047277f846e8e368dc896. 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/QZMHM2361740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94eb9aa21527af99857e2013c49d8ae0eeef9d8727171b773aa3706e40fad95. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNMV2381768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31bec413ee4c5fe916889db78ad737d64bd58208fd2d72aec586de91d763577. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZS642289521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f8eeb108c02ccebe3e4b77d9ac5f31155a1abe1359dce870d38b5e3067ddd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM42K2345712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94eb9aa21527af99857e2013c49d8ae0eeef9d8727171b773aa3706e40fad95. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZNMV2381768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f8eeb108c02ccebe3e4b77d9ac5f31155a1abe1359dce870d38b5e3067ddd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM42K2345712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7a10c838b0d85b56ee75ae4921c0a3375d4262a0cf7d19988150cfd94673b8. 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/QT2VB2441798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa084a82e82bb7fe17d5918226853e7ae4df4f8aebb1d8785f1184dff12d030bc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZPEW2518525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3fea45f91ebcad82fd3a264339f17f5db4195d603051ec32528bdca9750c28. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZPEW2518526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4201f4053d646efd0272521cad2879da0128f98201d52156065d279ea8012a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPEW2518527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1756b3022a3cf66f53a34898f26dc00f50be60deaf526844f3b0b82ac59efc4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNMV2597187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db88694c5994bac0b754868b12ed891be258c162bc740bb2d81f30c840afe6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNMV2597263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7cba8d8e5bee5f41c4d83318ea1613cf35452e3bdeb3e8fd8c81fa59edaa0a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZNMW2591680.