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 0xac2517038b27833c0db51129bec43cb0015dcb8270cf9db0fdbf519446622203. 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/c10dc480-9abd-4cd5-9a2f-04a3e4cd97bc.json and https://artists.proofprofile.net/proofs/artist/c10dc480-9abd-4cd5-9a2f-04a3e4cd97bc.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 0x162d3f33028cfa02d2b1802677bc9911483d0e61c9066994d904d9923f21efb7. 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/QZDA41921116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79127676d21ce5ef75f7d5e3e7ef73bc4ae0adfdaf3281d33de1c9cba2238a7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA41922091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283d7853eff8dfa88ad9a127e13b3c8d7eda6c330e6758efa7f229018e129fda. 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/USUYG1281396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5312d9f92769b407a12ac519f4c1373763c36b1528a28a8e29449c06ed3c4fc. 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/USUYG1281398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ebec569a834cb6489174085c7c203b9b28467cab1e5683b1104900396f40ba. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USUYG1281400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744994096710c815d9df42759662409496ce393f8a520b64120e1b279bd31299. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USUYG1281402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd0ccbd7d91e48df880378e00625c4860e87b6f31a26d2649c0bf7ef284729b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USUYG1281404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67ef892332bc337ded399af1e531e30c42e7c8b4e01b653643b8af0a75998d6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USUYG1281405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ea1a8a103315eb575314a5f4ce1628afdf8728dedb1236734e654687f82b9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWZ2239189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b22e9252e27e6c274a88a3e04cb81f1646ca7ff97a89b4d50b0b456e9a1f04. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEQ2230671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2211bd5bfc2f4495c9462431b4210240b9fdd7a91111bce61f8482549df8b8. 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/QZTAZ2272283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bee679827c18b22755ce06d72d6dab61360ea6d741cee44390fe51b5fcb23ec. 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/QZDA52341606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab310f5a6cee6f232bed6db6dfd7d63a2b1c83353fc69c59d176b648185cce. 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/QZNWZ2309607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11748d88fce93ae6eeb06f2151d8976a18cd91aefa405bf6aa0772d7abd4c1da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWZ2309609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0946af894c20660c1b899936a3b63ccd38f484d1eec74b669dbe08e0aaea3c6b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWZ2309611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe01c6f2057b108ac2f898acefcbeac31615688af472cc0976f0f4e60e819c80. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZNWZ2309613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9cbc01ceffbb2644e1755c457b06315b0a5398a0b4ff3406e85c6052dbda66. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZJ842400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22076abbaea3276cb4f9f3ac24669741dba472a550b19ea718a2000ac06df2b9. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZJ842400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7d2a7e130db9fbb52e4c2ce5b98cf7c68a9368349690434d3f880805762bc3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZJ842400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3f99969dfb19887272a14dd4a8374af5ba79a01a022e8751b21917f247d66d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZJ842400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c67bdfe2128ee4df6de419c8db64ef279c56bd0203035fb08e37615f293e6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZJ842404356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94ee1d88865d8faadf8a4a6b6f52c1d774165bd831f09ce38da70521767541. 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/QZJ842404550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c67bdfe2128ee4df6de419c8db64ef279c56bd0203035fb08e37615f293e6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZJ842404356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5786b74beb7c33e7f08ab8ec4400f4a13bccf33b525842fa981eae10fde5a2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZJ842404551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75fe934ec23db82ac4e31bd14fa774a281d980bb51a9ef4163c041722ffcefc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZJ842404553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eaa4fa4b0b785666daebfe335352dfe6e85dfbb30013e2c4810b14c218faa4. 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/QZJ842404554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6021ec4a68f6fa13d1db8e418ebd042996ddce1e4082fa50041753203d6295. 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/QZJ842404556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792e99b6e4e4f2316494bc352e0a63d4c8824e7f1c3a7c27ad3a6cd79bc05a95. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZJ842404557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05722d1ccfce3f8f03fd76d2b9b177cb6130242662c73e03d0da174d146bac0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA72524082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7bd2c717738e6688b38453b807d6de18c72b87a3715710cadd1c57411cf1ff. 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/QZK6H2541944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0776a5fb96926a399129444324abac4e1e02f6f964c2daebdb1d0ea4383df24. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZK6H2541946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec743693e0ee8c1ea370847d7643d0f7e45d32ab10fda5102a440cacb1899686. 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/QZK6H2541950.
gnx (feat. hitta j3, youngthreat, peysoh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450a49389efd4f0d6812bac2dd9378b862f26480f01e0588d40268bd46b3d63c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12408505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aa92bf711cf914a41a1f95681693b9267512919ac9d9b815bd288b906006a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12408516.