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 0x6832d653c481f7b0e051ac60b905d7f6d8e68241c2e2064eac5772a2279a7beb. 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/881c89f7-cf5b-425a-b9fd-03628c52824d.json and https://artists.proofprofile.net/proofs/artist/881c89f7-cf5b-425a-b9fd-03628c52824d.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 0xb10202a0b565d2a8fbec7043ced515094aa963658daaee4f640d52d03a2b0359. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWZ2026571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b93b82bcf1064338d9d277e9dd352094445bb724be20cdc5c379b19800f845d. 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/QZDA42167415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c1b6ec2e65c16a531cd6c0e5c44bc0fb25167dc18e686f69559c47f627c49. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZDA82186778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b40aac6fbf7588ed36c95028340e454c76f22894bcfda8810454e0fa877f730. 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/QZMEM2173560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e8464b85ed7f4a7a69979d734ee3b0935bbdf8d8d5f1a4c20ca1361b665e6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP52102854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5feaa6bcb9f214991821972ec34745096920ff5d53a37d73946018d4178514. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAT2117767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7464d2e2f358c5c0aa07a1b6cd95ce9e925d2a0e9a32da11c6eb5d8e6a327e36. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZFZ62216513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a37409c44ef3a847e59df28ffea17346b1e56b9bac25e1308676e86bbdbfc2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6J2283088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ca1aff0aa8fb037bb214e6a1bdc79e7f12c210db51517460d0060fec781f4b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6H2276574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77eb40abd388eb5221a808a4012286a0c28e103f5d17a61db15a6da3ae4ec81. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZVEM2318822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e3e5efbd0c6de68f5631ed7fe0f41060538374d81d56ff898f8d05e78f646. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TLREW2227159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f13858321594e9d0a5524cb8ffa1a2f84db583a8de698408420bb5ec1aa03. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYZ2349565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846b65d28cf9b647632642ab289be684320657ef3b7a57a7af8cc7b4773f5104. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA52398320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378a771ced229ef974c9844001f45372cc0b37d00b297471e87b2c28bca5d61c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES72381706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7614f9d51a7fca580bdba74930b4dd54a95cc7ebf4237abe5c69a2f75f714d4b. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZES72381709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44433c5c5377e65df44db34dd0417065b7f8b632ae863cd9396a983342fd1e7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN92300715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438d84210e95c0d60d31661d90a31f37b9e2a843a8da2f08520acf3e910fc5e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6F2338537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca382555fba6853ab02962225ae7740dec1ef6a3d28dfa8cc07efe457b64f06. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZK6F2347278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71cdb1becae6dbacdb40f644540628193f61a37b93dce4c384525a55be5a00d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6F2347279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103d2b404c0f584ab146778f90b6445884d2dbb884deeb22322c8ca892f695a2. 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/QZRP52374571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438808a2f4d47d35bedcd98af5b319f334f1b69821c5541ea8fa8f1d743c5bd8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZRP52374572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e9cd4e8324b02ab100d25543d8436e9d2abb58a70ef978197bd72237c1ccca. 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/UK6KW2300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eaedea6f9ea2a13bedb392d885997a0bc5f978186aaa365cc1b6039b3ae568. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/UK6KW2300301.
CHPT. 9: 4 MiLLiON PPL LiVE iN LOS ANGELES
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85612ff97aace98fc8bac844af700f4df9784b65859bb9920249e1bc335d1b9c. 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/CA5KR2493613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe04f23473d2296186cd647c45ac3d8371d7887f9c173da1c2e617b5fb981a6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2491719.