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 0xde5be03a27df9fbf1ab5453875660e449163c94d2105b7ebb2adf81fc9e497da. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4edbfd1-6393-4c4e-809c-9618f860751c.json and https://artists.proofprofile.net/proofs/artist/a4edbfd1-6393-4c4e-809c-9618f860751c.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 0x039fe1ec44edfa1305304214bc4f671d8de96cba43e3856064b0cee218e338ff. 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/QZK6P2253087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e602ec143e4bcd447c0323665bfd911106b910911296e0f584ee4870ed12a5. 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/QZES82157799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1581967117d9b1d555a0e837422f1ed10f8c3080e5f69f54d820b95678c023e9. 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/QZES82157801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4ae6e57dd51867a55044b254dceacc89e294a76fdc76e75b16d8339f6514e0. 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/QZES82157804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551a51e656f039dae1fa442ae2869ca145432b242c4b6257fa97e2871bd58c39. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZES82157800.
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 0xf6672ad8b01326910245d5ca43fb204249e548983fd101f14980317df92f85b0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZES82157802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c67f8887dd514f470786fd05f0cc736757438fa7d9ad77960a2879db398b9. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZES82157803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ad82009ae9bfe418db66f51e7b2198d3abb3e6a3d714f686aa397ee8ee918. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZES82157805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7035c83e7d328610cc91cdd2d90e014023818b0e37867fa734f5b13c679c701f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZES82157806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce199a84c67a43dbca903c8c6fc6c614cd175734461c74b7510777dcdc7d212. 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/QZFZ42330790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba910a205bba949fa4fbda4c8d23b8c6c2eb8f09aca2e529b54ada766467d844. 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/QZW9M2321668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e2ad589ad247e84d77545260660df2f93029c5154d01c8973c7b697e286007. 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/QZQAY2443730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c8d983180f8edeb782567ccc067733e377cfb95eadb36cfe674e1a85f5aa87. 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/QZGLM2596448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa48501ce13b2161d4e6ce80e15f1e1ed856fd6801b0c6b6a8938a043ff5ad. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZGLM2562964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab38c48e2b9e721714b64248fdceac4391e26adeb9e15b4fbed32d6072f2d84b. 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/QZFZ22593173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef15cdeb2ef3969bffdb00464dc84dfbe7534ee2b5aadf778618e125374fdc. 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/US7VG2560856.
Curiosity, Demons & Addiction (Two Times)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe2a5943130906928b6a29fe185641c973b17ef844bd766e990e22179ca07c4. 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/QZES82415416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73484115d0ec001ee30120bb8712171338379d06c7c1648311d3378544febe81. 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/QZK6Q2146192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3015572dee0c436422fcb203802d877a394de2a5b7dc1439896d266eb4bbc1f5. 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/GX8LE2529730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c994d15c9b9c0c4f01673c73506ce9d3961496ec078312654a204634f1a100a. 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/QZW9L2466663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e201c3f20f089ea3dff1a0c63c23e760678a0e4f728fbf8e176a873f2f704b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9L2466669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cfca22dbde2790ef92a3bd1d46a58cc1c0f23318e4d3f8e363ee7533a6d3cd. 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/QZW9L2466680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4d26e8aedcbdfe64ef103beec7e07124d10cac94d55c45985abbdb86ed89b3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZW9L2466673.