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 0xd10a6a7db8badbcf9c9807b3727e72ab9f4369a64b85d32a8ec800d4cf861117. 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/84a77927-97d9-4bd0-95b4-4040b176fa7f.json and https://artists.proofprofile.net/proofs/artist/84a77927-97d9-4bd0-95b4-4040b176fa7f.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 0x12b23d919c0f1d85e6edf3b3d33459139f6a95c5e6b57d27934624197edccaa0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:32Z), 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/USAM17601264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7089ffc8fb689b89ef97322869eeafc59e2d139a979a9ffa6b121db623c2ee99. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USAM10400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419bd157c889b274dbd0212f6eeebb43ab265226888102da3b8c392a0cdef040. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USAM17702141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfc3990dbceda57d8a24415c97680bf4b9f2da1e9e9a5c00646cd59b52c65e2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T04:36:35Z), 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/QZWFE2482482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae641b54718b1bdef84e731847371f625aaaa85bb1a1fb859fc73d05d4c72d9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USAM18000868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ad861a7d5aa1ad39968f0f779fac1679ac0cd29c026f6580c007f4dc523cc4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USAM17902174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c2a96774259b47c9412fc08c5cc1166b8024abf63d5841fe8501f61f71da2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USAM17601261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf072cc1a2f06a3e1597ef2313f93a1271149357762c287ac36677c6a21c4b550. 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/USAM18000872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c2a96774259b47c9412fc08c5cc1166b8024abf63d5841fe8501f61f71da2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:50Z), 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/USAM17601261.
20th Century Masters: The Millennium Collection: Best Of L.T.D.
The Best Of L.T.D. 20th Century Masters The Millennium Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84971508b77f19fb232911e6530e1476e61672ca4f60d46b3db0521d2e3b74e8. 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/USAM17601263.
(Every Time I Turn Around) Back In Love Again
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f529501166e3a55c0bf20551a998e1b92f0c097ff3e56849bbb5455691f4db. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:26:15Z), 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/USAM17702137.
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 0xe561a445747801068ed7cc90b4217cbd5b4282836707434d8a354e76a67ab232. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USAM17702139.