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 0xaa8a9b2664cda59d5ef7a754405a6dafb748f19e75c96e48456534d6ac47907a. 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/54106a41-fb54-4b4e-ad68-8138b931bc64.json and https://artists.proofprofile.net/proofs/artist/54106a41-fb54-4b4e-ad68-8138b931bc64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everything I Wanted (DJ Maphorisa & Kabza De Small Mix) (Edit)
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 0x5c15c3bb066c3cb79ec4b1e25329c8c2da695cdc144ad8183e8a1ce2721c7b1a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ZAC011900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddae3470ccc10fb293cbef58134ad7bfc939bc08cc84df64d78673242baa77aa. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZAC011900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5201fc104bf9ac250d485e952e775e6c4ab41378d4d5b08ac017ad98d2266b. 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/QZ9452300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d522a0a2166892c22943e2e573f6c31d405f73133a69bc39937dfb7d5761c0. 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/QM6P42509864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95b955da30fcaef379feda12c14022731bc63938ad2d451ff874c200d645a3c. 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/ZA87D1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307fc6215f423f8dcf5fcc53c1f6fa9b57f95c37c843bb0ec9c6415c139d0328. 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/ZA2619000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18464b9af405b3c27c54bf886b4ac670ad619f38f11ca784a30ef053afd7dbb2. 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/ZA2619000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edd61f7d46e4077de15db194e2a72e6758d45abd2188e7a9eb81766ad15e4d1. 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/ZAA012000172.
everything i wanted (Live) (feat. DJ Maphorisa & Kabza De Small) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc1501445c2ffd0fd4dbfe4ed9fd6b53ecf1d533ec94874f79e9d11f4e1709. 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/ZAC012000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44b931f0f4cdfd5abab7be47a43bc894cf432112e797c7bb356b6981d58851. 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/ZA59Y2100006.
When House Was House - Citrus Music Twist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e43ea7e83a29a9023640dd6370744cfec7080073ba8991676b784a0e0a2919a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ZA59Y2200001.
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
When House Was House - Karyendasoul Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a189c35f08d6970e790779d5d9f31ea88821ac3809820f98fd041710ef49ccc. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ZA59Y2200002.
When House Was House - Froote Afro Tech Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c32144fa24914987315fee17290b39032721a7d2fe4ee44db17f9e9cc6da7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ZA59Y2200003.
When House Was House - Ultra Ego Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70852991f84bddaf163c70e49450579262940f2583cdb4cd007db6f3f0883c5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ZA59Y2200005.