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 0x309fed3289124156f468204cc8fcf2ac5c6fe525266063b8cc30f17bb50d4c65. 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/f21a1439-038d-41f3-b4a6-06b24238dba5.json and https://artists.proofprofile.net/proofs/artist/f21a1439-038d-41f3-b4a6-06b24238dba5.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 0x0bb0d9dcf6c03ad61d97183fbc14664f9d959c1df4e06ee3e8c58f24f7f36875. 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/USJI10401077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c61117beca96ee2b93eddaeeeeaf0f1a4b96968c93a4fb9fa99aba29c30d98e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USJI10401078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db0dc829916136d9b93fc512d8ed1fa6ef291a8284daaa36cbf38c868cfa2e4. 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/USJI10401079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691d0bd6d82b55456372d6fb674d4973bf76327e9663743c677b50f98621bbc1. 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/USJI10401081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d15fc20ad7e11281f963bcc1c2f590d8f79edd9757fe3ffb16cc7a814bd411. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USJI10401083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7a4c57cc91011413b005f84563ba0436d098a967e1e4a8489a4dd0ba6f8465. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USJI10401084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6563eaab91a88707134188bfd42d4b749e76328d0564d222da6dd21c0d322957. 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/USJI10400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f1d5daa4d6d8e3ac64b67417d6bc683d8b01b78eb494317ba7f16255aa3945. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/USJI10400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9020cc7fd9c28de9c2c8cd4baa156886a0832fbcf6314b045ddee10c8f3196. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USJI10400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a2fff00a13a0293009e0fba0455fb9244a1c554fe5db54e5a5ff579be796b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USJI10400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f248b2dcc0276f6ee816caf98036f776d1d464ba70b31bd7b8591339e610fb. 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/USJI10400213.
The S*** That Will F*** with Your Brain Boy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50cf6e8ec5c22c1f78764eb83805be7b5e7df2b207ac4b00aa3fb4dc72bf399. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJI10400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dda300e69d784b5c8389d99d084e3679ee85e1b10d1570dab64f9c7a953088. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USJI10100361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df5b4531ad292ed33160d8efdc618e7837850c0b6a764add30b764f098d3bbf. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USJI10100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea313ad6e16afdd528d1aa8a30d29b0530cd492f95085bfb059ee9b1d93fa656. 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/USJI10100372.
Click About It (feat. The Click, Harm & Bosko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310fedccef807295b43f9bf6b2a5ea45aed9be200b61743f5bdd6c83bfff8905. 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/US4KV1100020.
V Town (feat. N2Deep, P.S.D., The Bunch & The Click)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cbf888af68a69407763b84ae95d07610bc7658afdcc2aead461e528b66eb9d. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USBAE1001625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d40a4d4a71f79e682f65eb9b55c43c8f21354fc8a2f7940ebed38907e451cbe. 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/US4KV1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefcf29bcb6b97dfa2fcbea71cc586a1bddb509ff824b2d66d509ec8cc4ca6c7. 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/USJI10000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b2d794b7765830c07f07f40ad04abf1864a6cb7493331edc9689c055ce013b. 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/USJI10000434.
Captain Save a Hoe (feat. The Click, D-Shot, B-Legit & Suga T)
The Best of E-40: Yesterday, Today and Tomorrow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05968057a1b1e77805c7d9b81465b0bdd7b7ba22a2ff6065c462bd1d0a90571d. 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/USJI10301182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4768538906ef6b0b20844b228588084eee5ff9d3f98154470cb69cbbf1447393. 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/USQY50946895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c8afc2d2d393dcfb63484f4ebc77c378920dff63f8db0f1f2856c3e2d54f14. 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/USJI10401085.