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 0x8d397a39cf913c667ef89ce1610463dea71483d9662a553a3e110c6027d4acc9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75beadc6-b836-4b40-b6f7-349a840af55a.json and https://artists.proofprofile.net/proofs/artist/75beadc6-b836-4b40-b6f7-349a840af55a.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 0x9e1e962ca14bbdb1c3caa81440180b6f7fcaf8bc6c7999d94ff995e37f96032b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:13Z), 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/QZRP42106919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0457df718ebccecab20185513021a511a4ee3b5150e6b1fb3fa8b2a613dadc4d. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZRP42106920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c326ef4fffd8ebfe50a3a45b751096dfb919bb16825dfa483399d2b31bda03. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZRP42106921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7855e86c70c436a90844739e1146f5ce806f126b26fe801ef6f8aa846a81a7e1. 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/QZRP42106922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f9161bd1cad5e9febf570ea3ea5da7a9922d24fb0e5f232a945e93ac20babe. 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/QZRP42106923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4972fafbfe4f5ee50cdedaae4095ce3abbf088d414eeb31352dc01c65d49d. 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/QZRP42106924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89085ecef4bd0765fddd9002ecbd2b10f9c2b96b007afdf4b4041aa141369001. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZRP42106925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f66836185220ebd5ef8f2378a20a55eb0042800557dfe52139cf186a82946fb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZRP42106926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41a70819aaee5d35e0da31d452278358af950b60363b1f51d9b4b569f39ad2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZRP42106927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd158134dfd75a92c2f0f230cbdce51142ca7a23215db7905987e7733a9f92d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZRP42106928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca15d800937a8b4d82ae7f5fbdc0c0adb079796441309bc542289e8911add1b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZRP42108554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75894d46eaa2d755eb0a88961c90a1dd8ec97f4900cb4ae091813d1b78cfae36. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWV2307924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9553814fbeca7ef10428f0439899e314ef1024c1a73018b31df7ebf23db496. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:44:14Z), 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/QZNWV2307925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a8fc791b6281a79bc2f3c6eb9b223ae27630709e932e5cb9726e5fc824598. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPLR2375880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e245cbd49eb5447ed678dea0ab39eb6cce162cda73513b0d26d05d174a5e7a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZPLR2375883.
Rhythmic Revelations: Hip Hop Chronicles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa968270d55d6107acf3aca5ff23330009b22cfc7a4b58af84cee28e913236. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZEB2408727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fcb211f5acaff4e10cc61f438791988af8c4689d0c4c312905392133700cf0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZEB2408761.
Hip Hop for Focus: Rhythms to Keep You in the Zone