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 0xfc3e0398ef10c59ed5e64a5b75c1a6cea41aa81d533528aa88c60d1a96d322be. 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/d852a03c-056b-4cff-834b-c5621f5c6beb.json and https://artists.proofprofile.net/proofs/artist/d852a03c-056b-4cff-834b-c5621f5c6beb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Step on It (feat. Leroy Biggs & Chad Armes)
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 0xab0be4bccd0ebe30e9294f95d48e741f278ba73e718a6fdbdf99a4e91429616a. 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/QZEQU2301709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228232a51c9c528d386157d16242b56ddd8e920c91844ec1859636c913bf7f98. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZEQU2301710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3560af0cc33d503b95f5a7a6e0d365ad2d14c138ce313fd8bee46d584f1880cd. 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/QZEQU2301711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e82d9fbeb3c33b583a2c06bfa1dde5664cf1a9b77d71fa65f43ecfd3c8c53. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZEQU2301712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2318e0f9dac7b89dfdb5e87279818e99c24514a5329b1ca49a1e74bef1f85ce. 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/QZEQU2401581.
Breakin’ Bread (feat. Troy Money, Trapperman Dale & O.N.E.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1879ee651c3fb9ee3f3cd4882cd0719b7a5ba8ad3d1ac7a023c78a41ca86c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZEQU2301496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbbc0da77eee03b796ff5d53fdb4dc9a79a4aef2acdff3accfa359b4de9731b. 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/QZEQU2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c843155cc93eb08e64961f74e2ac882988ead57beb51d9f0b509e4bf721f32. 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/QZEQU2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77fda0fcbf42b21532b646dbe478bc747a6a42652bf58cdf4caac66f372f1fb. 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/QZEQU2400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2007783e245ede91fc42c07c7c4e23417497bf3e135c215f27578e393392cb0. 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/QZEQU2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52961561aa0c2e7ee79548c884a202893995ce9e55f4021cf94a3da9c7428f5. 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/QZEQU2400170.
Superstitious (feat. Leroy Biggs & Twakdude)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7177696f47b5541d6714e693044ba8743452ed9754a3cf0018c231cd1e5bc53f. 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/QZEQU2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021d85abc37afe5f9338707bcee3821759897b708b6374ea1376d09e40612caf. 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/QZEQU2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23505265f9fdd881d10dfb01c1ecb71f81fe92dedf6a47d9fec0fc2ec7c4b54f. 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/QZEQU2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ea453c1b629515c378052330f8a6e040d0825364983af9346a44072f2efc70. 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/QZEQU2400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae7426bba833c7f9110b3638bd85eb4dfc121d3a7552513b5f3251912f078b. 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/QZEQU2400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d2f98417378cfa8034c22d21a801aac64e5507bb7e83ecf974e78de17a3349. 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/QZEQU2400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5166180135a824caec2736443e490d219c34e2e25a96360fc97249cf663e76cd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZEQU2268591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc17cf6857dace28845026865fe3f678d7baff0fc130dd5fd82b40b98106f320. 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/USDHM2210038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6472f2c01060e56f0ca5512a217c3bfcf8a2dab73884018028f6b192bf6a711. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZEQU2268592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed4ca66e4d1b46222b461db81f209caf1404dd4a44662c1eba7b367a5483372. 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/QZEQU2268593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a8cb764e61afaa800e0c2812b736b3a552589fd4e7d04db35ea81e152e4876. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZEQU2268594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e6b782cc46b054ea545fc058ab9e01308ad6996dead25eaaf4991f79ceedd0. 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/QZEQU2268595.