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 0x636d701b22b63fc5f145833aeb3cb1f578e097c268f5c5a8041f16f99057ec53. 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/d8998624-a85f-4e08-8053-7d4c6ab60a07.json and https://artists.proofprofile.net/proofs/artist/d8998624-a85f-4e08-8053-7d4c6ab60a07.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 0xe1a0c90de8e3bcfa28d9977329a3412ab7aecab9a0976d7e870911507e4b30b0. 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/QM6XS2302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6051fd2e4267497ea8f8d5c888a8e04aabb13d8984393d231b2628caaedf7ea. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QM6XS2302825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44986be195d992af2e4696f6c247ede8f81c8b8404c7ecad8b5609e28fb0b8b7. 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/QM6XS2302826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60223cba923a75c14d8f4a24294b67cfc78d22fd869c5339db859ce7963a0687. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM6XS2302833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e05c1b73597f28e82b338352504e557d404a530fdd649db832cc04677613d18. 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/QM6XS2410117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea541b1117b912186a37df9b70f34febc7b4bfc77749019a592abc4682a1e9b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM6XS2302999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7608f9af8dd5b069ac3cdb9f1f20df748f96b4f885c40387e936b381ff171baf. 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/QM24S2106821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c7a2e31c0175b36b1bbe14349272d3a992e6cae768cfdcdbf0e1098afab96. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM24S2106815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5989c2425973fbab360983ed9fec0d534f548c7aa0334cbe5551973535f98b. 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/QM6XS2302891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b5b17cdaa24e6de107c55f7549fd60ae19a4ea370c3ed87eb5324ee2cad426. 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/QM24S2200857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d71129236b27c9afa456822609262d08da2b9a7508bc2a52868717ac7f0d6f. 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/QM24S2200856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c6e2dd531fe931a897803d78613067f58be43c0b868a59546a47042d648c07. 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/QM24S2200854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8cd0590619bfcbf38e1d8e9b7a3c7220163d8dab3218a5101f3e0165748e0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM24S2200853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74b7ffdae5d9463b67875337468b265190408bff97cda555df984bc1edbbcb0. 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/QM24S2200852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64df579edf4a61d33492cebe12ce129eaad68305a552f7a15849597ce6cbf7e. 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/QM24S2200851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0b809784753379ad25eae54119eb60f6019a5d98d94c378e7f0956257985bd. 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/QM24S2200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613d8d903272b0cc08399432347d22d5388f3a4aab62a5abfa9ac5b4e34fcd9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QM24S2200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e1c6b4b09552d2bbdc185004be206c4b0914d67a30eab3d9c5ee52f35758a4. 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/QM6XS2302968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe049646abb62e6bbf0585a9db7cbcbed163cc2236bd3d1d48e8ca9861b2564a3. 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/QM6XS2302241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c89ec37435a02e4e43cc122e6019e9cdf10b6d6dee960ea2a9ac99d2e4a6d9. 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/QM24S2305138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab571b9c61bb8318f769617efe283568d4f6609e65f5d80e7bd8da296e7fa4a. 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/QM6XS2303039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6e6363152a580bd92656787551f9835533976b1214ad6a6cdc5d5e483db0c4. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QM6XS2510996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda2264264184b054ace0be59729669bdd46d9dea8a853c233f13c2d4db3bcc2. 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/QM24S2500367.
ON THE RADAR CONCRETE CYPHER (feat. Lil Yachty, Camo!, KARRAHBOOO, Dc2trill, Draft Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153b79b8dcedac1d983995d7b78a26e8938c1a6ec5466c4347292720248fa7d. 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/QZRD92405079.
PLAYA WALKIN (feat. Lil Yachty, Dc2trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0af95e035a784da6cddd75bee2385032ed72e8d5804cb02565fbfec31fef2e. 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/QZRD92405066.
2 HANDS 2 EYES 10 WHIPS/RENT DUE (feat. Lil Yachty, Camo!, Draft Day, KARRAHBOOO, Dc2trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30f987b07205bf370a588750d97ae71e4b86154d99ca96c85c1b5d3a51d38ff. 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/QZRD92405069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93641a9ee75b92d82a631ca5f99df862206f1e51d550c5cdc2471ced78820e6. 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/QZRD92405071.
DIE FOR MINE (feat. Lil Yachty, Camo!, KARRAHBOOO, Dc2trill, Draft Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34237085572059a9b0474f218a2c9f277d874951613e82fee523cb5a7c379a5. 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/QZRD92405075.
Three Six Talk (feat. DC2Trill & Draft Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47329978c80c2984dd8315ab00c426386b5d6d2e4b71549375f8071385e11f6e. 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/USUG12102648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b885799fabba71368fd4a564bfeeff1ad8bd954d6da44983b29a99599cf5487. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUG12102649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9842e49b467dc265dd0c643bdd275bdef306854da051e9ba95ce47a5434a5d. 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/CA5KR2209917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4c77137ed75326b36fa6cedd0250e8c05fb9c6045fa4a772a0ec16d6151068. 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/QZTB92387483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d63a55a33fb247fcdb59443f698723561d56f608e4a8af773e8657fbeb262. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZK6Q2250832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce88d943b65194c463436d4c15ad5e54551d52cfa1da68658036056cddbf69f. 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/QZTB52255764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9a425385d2f62a530a3ab2d3d564a760854a1f845aea3596f765d711b3797. 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/QZK6J2354413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a89276264b608e93b10f985aeda8b1998a1b328e345eb221a817ccb1ab3c2af. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6XS2201391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0af95e035a784da6cddd75bee2385032ed72e8d5804cb02565fbfec31fef2e. 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/QZRD92405066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30f987b07205bf370a588750d97ae71e4b86154d99ca96c85c1b5d3a51d38ff. 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/QZRD92405069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34237085572059a9b0474f218a2c9f277d874951613e82fee523cb5a7c379a5. 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/QZRD92405075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153b79b8dcedac1d983995d7b78a26e8938c1a6ec5466c4347292720248fa7d. 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/QZRD92405079.