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 0x4c412ff44370ffd9d57b428d6b3d74ebd763f43456c5c3d085bf4ace24e7784f. 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/51d06dbf-aa03-40c7-8d86-09876a6089f5.json and https://artists.proofprofile.net/proofs/artist/51d06dbf-aa03-40c7-8d86-09876a6089f5.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 0xbb1c8fe5fc3389145a7af0c828ee0d6e2a991bb8afc897bfa8e26a0c4d870b09. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2P0612505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3800fbcdc977cbf3229bc43aeca79175ccbfde6931abf6ee390f0b2122af052. 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/USQY50801920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d8a1189c504bd167f0cec2c39c06befaa5ea1b69fabcb3eabae983c2ed90c3. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USQY50801921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc54f0a6057b4a46e95bf41a7c3a435cdda048f51bc25d3e094be9f54ddfcac. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USQY51307559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c349f617c63628e3af6d7638d63d0aadbc2cd5338ef4dea6ee87c0af030ee14. 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/USQY51307562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dff1e42a168b2725922e61d8ff2a5dedd55e5abf741ae3f42fd0174cd5f48f5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USQY51307564.
Yuil Disco Breaks - Valique Emancipation remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354c4464a0aee79ae3bf0172044d9af46ce1cb128e26a1266c6eadfde633e67e. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USA2P1303904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77f050dde6efce510e644d0dd446fe25a71c02a58fcdbed24d4ef07e8fafdaa. 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/USQY51534933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d954f3894067271de9ff3ff1520787d0c96b7e05ef7cb6b8d0be6d84a3aa98d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USQY51566460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd791523806d3f489bb93e936e6de718ba1bc87bb2d47a14a84698ab30244220. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USQY51733864.
Discogirls (Aris Kokou afro Disco Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc91c43593c8287e0c8090d796631acaaf71caa4b3e24978d30ce07a749095. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA2P1960777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd791523806d3f489bb93e936e6de718ba1bc87bb2d47a14a84698ab30244220. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USQY51733864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f9f8fa8d2e026c0127042e9e357bf437c8740552b37f4d0f9284bb82cb300d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:57Z), 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/USA2P1960788.
Smoke Miash (Santuri Version mCurtis Remix)
Yuil Disco Boom (Prosper & Stabfinger Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a6264e18c7b0bd0d2786a75e23f7dcc19d6c0837a1104631e78570251bea5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USA2P2510978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7dd4f464e7939dab53a815d83805665760a255772a24e2269dc30328d6ccb4. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:16Z), 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/USA2P2528084.
Freestyle 4 Funk 5 (Compiled by Timewarp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb754e203247980aecdf536ed29a439d7900bcfffc03d8d6b6bace848a3cf8f65. 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/USA2P1669196.
The Obssession Bug - Stefan Obermaier Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11affd9bfb92fd8e207fab1667edfb3eb21ab5b7fc154d5f25eee1982d001ef. 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/ATL520993101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fce73322a4f9d1c46377afe3c3ad086ab246499c00710b07d5701bd81dc03e. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA2P1669185.
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 0x3822d66e728dccf8c4b31304023958d5f94a75297e0ad402af92d82dec56491f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA2P1669189.
Freestyle 4 Funk 3 (Compiled by Timewarp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f58be11e90776259a8c9e8378e539753c27b1d44a8b3f57f0c5ca7f59f9ad4. 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/USQY51487320.