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 0x57e47ddb826b388dbb9fda77df6ae4600e3974d272b68d366943c289c959b40d. 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/5c043948-5f6a-4c43-b317-7e33817657cc.json and https://artists.proofprofile.net/proofs/artist/5c043948-5f6a-4c43-b317-7e33817657cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amame (Asymmetric Soul & Adi Shabat Remixes)
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 0x27c3958549c2630a0db2596aa2b5470f44d968065b62aea3a6cd326c3a2b1b39. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QM4DW1804037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ecdf8c103e76ff7d0ab0e93ea0b3afa749e1c09f4d0bbc54a55de311f3ba96. 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/QM4DW1805396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b11f8fabfdc7427228193856b1a9f4a542d803ab5fbc1aae8ec8e3cf84dddb6. 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/QZ5FN1921316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49f6766bb377a32cbcf09000a884a45fc3a40e9647e15fd47e98b0e97fd7754. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA81985254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65273af6ccb18237432933c3678f5020c90617da05ca59747b5acc76f683037c. 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/QZHN92079960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ba8cb0094011c7dd73687cff100c8c861e54842caae3fa65d7bd1d9e96352. 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/QZFYY2017034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8b4f2e04ea89736a57e5265d75c879db4a5d0b8f9c918d7ffe8012d943a693. 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/QZK6M2085904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b7495c76acca07cc40360bb1c86432d5a104de4283c177b7e22c35022467fd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GRFM12100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccb8e688bcf17c92498037303f567f10eb3386e0b814d14275d0646ea2872d1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:01Z), 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/QZFZ32361830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b899fde062c0175d5cfcf92c0ecd08bbc2296abb73bdbda0f6bc0fd78b11e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:41Z), 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/GRHUB2310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f44396a81b0509faf9f58cade08f384fc61a5198e200d54424c414eef64f787. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:47:44Z), 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/QZES51991814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e4365cca648f6e7284f11a6fdaebbf1b8419eb20d0fbf429ad65b2390a9ece. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNWY2208073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878927e45f3ced7e175b7163f98a5ff350238827aa930370f8057673c3a1a104. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZK6M2068855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3762bfa88ecf97d3f2487ccab3fb84f286bff98e5893e4bd9f6a1f0c25da9b. 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/QZRP52234083.
When You're Alone (Robbie Rivera Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079408516877f207c3fbb888c10f1d3d406010268910b155e4273fa58506e4dc. 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/QZES52596030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4e018b1b9ddb6066a792252a1386ad6ad36d69c4de690e054038097ee76e55. 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/QZMEP2571991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca6950a4ada60cb56addf538ca054ca07d4f3b519efe81d49db8bbb6026bab9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWDD2513474.