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 0x5d70968ca28d0329ccf5837187542af5b4c515c7b9215b8d8ec01dfc152b6d00. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a95d3c8-643c-4fc2-aacb-ad90235dbf21.json and https://artists.proofprofile.net/proofs/artist/4a95d3c8-643c-4fc2-aacb-ad90235dbf21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Real Serious (feat. Evidence & Alchemist)
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 0x5a2020d587f8dfb4f0040f787cb8c312dcdeb5f5f15a496c9c47e4d784338693. 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/US4UZ1200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820308541c279cbc6ab5578ee631309a5878926ca82bb3d47043a5d931e58af. 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/US4UZ1200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c5844ee19d061c02a87736cca1867d33b79dc4971ec59ba57e88bf26f3ebe. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US4UZ1200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07bdf710e78bb7bfdecb0c896284eeeb1115d183f25d3a9474cf2a285fec987. 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/US4UZ1200046.
Sound Off (feat. Termanology & Ea$y Money)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01e42f3c6240677b89822c3adadfaa2287095a7af037af3ec530a93d319bf1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4UZ1200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee769e76355cf7a956398cc5cc497795d926666b103f7ec2d03b3e2876db42f6. 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/US4UZ1200052.
You Don’t Know Me (feat. Rapper Pooh & Phil da Ag)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c363c63dc33274c76ba9ad6ffc1fbf73f7715bd3d1cec7366b227c05d9d6da. 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/US4UZ1200053.
Dues n Don’ts (feat. Jose James & Phife Dawg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4f097a20c037e408e7d08461f2ce3db442b5b84c003e14e9236466572dc59b. 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/US4UZ1200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a232826fb8e12f5a3083e1cb778114be4b22c24755fc8cb2d72afee4f7af6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4UZ1200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83269af127fcd1287ce9a42674d23e0701d53621b4a42d46678f6d09d873c48d. 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/US4UZ1200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da351abcbf562d219ae325097013292a01da1979b3be8d7f405c830881376fa. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US4UZ1200039.
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
The Guns (feat. Guilty Simpson, MED & Pok Dog)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa738b64408a15556b804216a0a8603367d3e9a51c8388938ebe5f17f9e606b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US4UZ1200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a55bd2f431abf58e4655bad4235111cee91388d8589a565415cbf9580f0a356. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US4UZ1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2a1688958b9ff4c06b1ff0692f133d53742800c5ae70683e3ef4ff64e2001d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US4UZ1200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41edef3e2aa2df6c417c29d75cfa819c2cf08a774c1c195b9ff9f1cc3c9710a. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US4UZ1200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e5d2e21575ec725b5f9c48b9b98fa4bc0dc91e280e0d7e8f0251d27f350c2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/US4UZ1200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe94038cc2174633d25582dc9682fe7e417419ddf8ce189964765eb74cb6a9e4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US4UZ1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edaeadbb6607ba4fdc365677c95c1fcdddacba2f7cb12b47c8a262db370d7fe. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/US4UZ1200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86127399619d9cf66fd8476ac2dcd91f9ae2608acf748d5d7da712104d328df5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US4UZ1200057.
Get Up (feat. Prince Po & Ras Kass - Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd987490f52819bf3bbe240ab3e5e64e15c782ff617faaaaae34b1febbd5509. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US4UZ1200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cae405145c15b61e2362a0ed1dda415296ceb6bed2a0f855ee1528776103c3. 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/US2S70419007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3044cbbc424636d10dc261291eb146fcc283f3ada3d727c96a6139907a0b55. 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/US2S70419023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113c1bac2c9c95cdbfe204ce954b2f3772e1437b421ce39adbaffd47363e31d1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM6MZ1461975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc813292b2f479e8aed24d8365d7584ade8363af9d61cd52c5f14092e732a38e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1255424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc17a39cecd46e8093f18fd0f336c59cfe376fce61270167ab5024a930d1d19. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHKR0973102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef17f910df08c1b7e9c9afca998d18a3dfc27abff20770b7485ebd80224b628c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QM6MZ1461973.