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 0xc46bb9bb458f06a26cf3e0609c04fdcf3eaf9743067cc1b42da68f8e0f0f6982. 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/20c38162-5521-433d-84cd-04d3223949d0.json and https://artists.proofprofile.net/proofs/artist/20c38162-5521-433d-84cd-04d3223949d0.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 0x273ddc4949946df8e7299a655eea0d513decf6b0f3fd5deae1d97f382123bcd3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAEJ1924463.
Above the Clouds (feat. Abstract & OnCue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe635add1c9811890ff861d9d1c795af604ed1e400af533843473b06a2fbecf7f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZGLS2175938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f11649970229a85e3d2f7778c4e955ff9fab3306fc17b01a73b793b766b212. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:53:18Z), 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/QZHZ62098124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe635add1c9811890ff861d9d1c795af604ed1e400af533843473b06a2fbecf7f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZGLS2175938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b74a91d3299f3998cfc73304aab40d42055fefeab6db4b4bf6d943726b2aa3e. 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/QZNJX2165696.
Right Now (with Yung Sum & Search For Hiraeth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f0ab6878d4a413fe14d5a1993823ee7f88ca9688cbd5a3613e83ac186b654e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJV2231693.
Hell 2 Pay (with Abstract & benny mayne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f47830f164d97d77d8ceec0270753c0f07831754826a54d926731b4a3e6648. 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/QZ5AB2333421.
The Fray (with Skizzy Mars & Sammy Adams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725b66135691cacb1e3097b7ecf8f2889521c46029c8dbbb1a2d49b4de5894ea. 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/QZNJV2357230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6909889cc1b3aed234ca9fd0d79a6770d80486997c25890c7768f83de84dc. 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/QZVEM2394661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5946cea6f652c26e69488e9aca25560766fea9cbfe309a9a0812604f31a1482. 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/QZPEW2427330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405299a61b8edb0fa9e18360fce6a4019eab35ebe883eb5d1bb0134107e3cd24. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QT2VB2401869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e58f776548fa73b978aadaca65095f14f736e818d472868074790278ca0f29. 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/QT2VB2450762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb78504e0b61ac129c43a17f630348fcd54f9bb743b756ff2b811d86e54e0d82. 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/QZVEM1883420.
Wasted (Feat. Jordan James & Joshua Golden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ee04ce7e7adb8467cb87d6527677113b2733ccab734af60e9760ed9b2ac64f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:38Z), 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/QT4K52575317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9510cb2a8026dbbd23dc5fe4a086e9057487912be923592fc6f4993b5f28dcc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT4K42587082.