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 0x3cf11e190177ec3245aa3d20813c8e9bb7665f69281cfec0006b26baabf15f92. 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/e59c9dce-f4d3-44a8-8cd1-ca9fb8d2980c.json and https://artists.proofprofile.net/proofs/artist/e59c9dce-f4d3-44a8-8cd1-ca9fb8d2980c.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 0xbf6318e30b672b154f3db064e9341dcc058ff6798b28ecbb1b73a3a4592e8c98. 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/USDJ29905448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc571a384e84ab3ace7dc031cee2828a899435f237a2bdb009f00252e59359e. 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/USDJ29905451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f635665c84e42f8ae608f8cbd9e481973d26888fbe3120fd22561bb81a2944b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDJ29905452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1387a4bbd0f702670618c1db2bd650d73e0c3ad43f2ce4769edc6cf88c03a1. 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/USDJ29905454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f71dbc551fd95fae261c163f1779134310ab26db98224393939608a382a8b0. 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/USDJ29905455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eab4555cb2af6159b8ea35a7cb2d0048fc88d1cb69a887fe0f9441599c25e2. 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/USDJ29905460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2bfa875c1a253957abfa0555761f3f781e7354a108828a345720f8f2bd5620. 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/USDJ29905419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9719ed9caffa1097937856b8c2acd55b47764e79b493adfe2372671e0e696fd. 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/USDJ29905463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9172353238c58d55f55dc79ab0f68812b0b2630a95d62f87e1c7b500f22c617c. 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/USDJ20010076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62c14dfd8176dbfad398846617e85ff6521fc978277c589f01988ace7dae820. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDJ29905437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef26f1bb1ddd319a6fec806dcf6d05fe4bbe37c6fb7ec4a104a823d985bda533. 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/USDJ29905430.
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
Clowns - Skit / Album Version (Explicit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edb958a87134f34ab05d53f2f4dfaa4fe7e0f7c5d49bbdf32b8fdf6aced0f15. 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/USDJ29905450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb397fddec16dfc6318de50609e87c3fd6ff4d2558e78fc8c937ca70e800aa. 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/USDJ29905453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cdfc6d193ddd8c6c93a90a502be6c6cd35db473397a0054dbe2bbe0af4ceae. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USDJ20010019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522cf8bea013c160ef9df473fe886a465d6dd41a87d3a3aa76477a82d56a56e0. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USDJ29905458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91c5ffab180fbed02c148b6f49dd0aab5df1e49143c442ddf73cf6484717d68. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USDJ29905459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf478f7e5e22200a264628e4c3fb5e81d8acdfae6dd4eeb077499c600eed8ac9c. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/USDJ29905461.
The 187 Murda Baptist Church Picnic - Skit (Explicit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f2fd213816df08f6cc27d187181b8bccde23890719d8b62b6f4ed2d2b97f4d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDJ29905465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab3f74685a75ee1b158144e9f350474de9d29aaff5fd662db8d656f9e544738. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USDJ29905464.