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 0x2ce2788ea334b44d76dc19029ad750adc4f39da733c9e55ca0ad00ccfcc88b8b. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb393c6d-51db-46cb-9f42-917ffb1721b6.json and https://artists.proofprofile.net/proofs/artist/bb393c6d-51db-46cb-9f42-917ffb1721b6.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 0x73caf4d381f78d758771c6249fad9c6664a0b75e1bf71ac652afd238cf71207a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:34Z), 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/QZMEQ2002209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc6797eb886131b687f66546a5ce1d72830bb1cc6685ae964d412c1a3cf68bc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZRP52191195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6c800959d6892c39203a207b21cba0f95b2d27c254a505e6697910d2935924. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ42296799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa62aebf97c3f363d385069b4a59d2ddb2743c908ed140885eb9cbc48844ab. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:45:23Z), 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/QZHN82315535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563ccfcc728a5225951eecf43b04b3b3ae355113bfbc6193cfc4be63ea3e6d28. 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/USUYG1419040.
Midnight on Wilshire (feat. Slumlord Trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2bc34b20c4b87bd3972b1b1f088cf8cfd7bbd16322c03f7a66b4ab3532f4b3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:10:14Z), 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/QM6P42345403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e4143bd7434a3e94f61964e7aeb7085d07e3486a85dbda29b9a4c6f3b1aacd. 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/USUYG1415218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2c9f365e020ad52d09afc6910285eb3372675df5098ad28c592d7da7adc039. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1415226.
For My Dawgs (feat. Chucksta & Slumlord Trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbef1c22f3382233363e15e9d88a2b4957962454a2a0aa82e21ff65857691d2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUYG1430297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fca4220c2d483b75b75d340b31e42a66fa2c28968beac144b6a0633205c596. 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/QMDA72257690.
I'm Him (feat. Slumlord Trill & Wallie the Sensei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80dd10482c48c71514589ca63f07f6750b635c9e1b92a03d3cde2202d423f5a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USUYG1483286.
God Forbid (feat. AFN Peso & Slumlord Trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5241de85aa540ee84686d4824170e411c2ce9d5b5f81dada8a081968ec2b113f. 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/USUYG1453636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7ea0c54e9bf02277e8eba4aefb56e9abed59b457d57ff14d4d9742ad8c82c3. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USLD91743609.
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 0x6b21931ac4cb760cd9bd762c858562029de13f71d86f48c219b5af2059fbc6eb. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QMEU32415116.