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 0xfc55ad25d56047e40d799e7bb491db9dd629d8236e78e7a2d51f50190d23d2d0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea04039c-98c1-4734-b677-4a130ef634f1.json and https://artists.proofprofile.net/proofs/artist/ea04039c-98c1-4734-b677-4a130ef634f1.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 0x7d23735d5ed12e947bb0e5d56f006c55e21de9c0ccdb44cef28c3bdeaf1ae7fc. 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/TCAEZ2031415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7da5067a8c0fd86aebf23393a07519a8cc33516fc9a71cd64dbca91935f5e9. 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/TCAEZ2031454.
Eat, Sleep, Praise, Repeat (The WLF Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c609861a045d3c5a60a541a12ed89e0fa2634c285dfa2262b3bd9632ac5dac. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAEZ2031495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0206bc2de3faae1812128dd35303b675a132973c205b8f5ec9d427d85488da. 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/TCAEZ2031523.
Outro (Psalm 124) [Resonant Force Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3165f986cee81b9a31f6c1060bed09398067b4e6266831949ca857cec7d2358b. 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/TCAEZ2031572.
Put Down Your Smartphone (Coroxxon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67a709c6d6665566bbbfff58bf3337cd38214e9101363c474d50a518d404e81. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:12Z), 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/TCAEZ2031518.
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
No Longer Slaves (Extended Hardstyle Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31042a195836a9e96791dfec7af004f0ec43145549c3298b583cef6be66c900. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TCAEZ2031633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2762c60b558d06c22b4561d4339a6671b7aa846ecbbeb5b289fa4149bc736a4f. 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/QZPJ32193950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19310aae069c737bdcb8c40c02a59a2514623d6b2713f15c0f0d41ec65096767. 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/QZPJ32193953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc873114bf2eeb5b4a2305c5cd21536dd92ea81ee9d3cb2f255b62d35028ff16. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32193954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa987bc4afd17a2b7e5c70f77bf25616a7a38fc9729562d19c8717907a679f332. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32193957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c3e18eba11d1948fdae1f166069e55406f54aa2eeb17f38ce0073c76e9e77e. 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/QZPJ32193959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c44027fe7dde9142c7a4fea0421ca2e98234583e2a2f5a592e661c4b2ac72cf. 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/QZPJ32193960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c329b7ddd19ea2fcdfc2371deee15802487212a2b7e602fb8dd9c1d294e08d. 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/QZPJ32193961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede59d4fcd366fc07427f904a7050f9c84f0bdcb68d13548cbc3dd4a5b9a8934. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZPJ32193952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78f549537b860c92b99846369db923c0abbd3ec0c97803a13f42128da7116dc. 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/BRHWR1900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82e8a872f9aa2a8fa4d1106ad44a0ed1f9a4ea0b84b91b41bc3fcce95cc5404. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWU2419552.