1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x04567b4dcacff4ec59da3e7233e7d2a5ba9bde7d6643b614b62df86f8e1a08c6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22f49f80-4a34-4f97-ac17-32e1a417d53a.json and https://artists.proofprofile.net/proofs/artist/22f49f80-4a34-4f97-ac17-32e1a417d53a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe2bb42a67017b1e83f848e1b34705b57baf3ff0de15d35479981ec79c67975. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3GMtrx7JXf8glYxJYrMn30.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3GMtrx7JXf8glYxJYrMn30.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eb54a0863034f2b231d039d8c23d8d464b14d35c482ba719c84e8e9fd1ab31. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2XXYbwBpKjEiykKKuFZ0i1.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2XXYbwBpKjEiykKKuFZ0i1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135e16ff6809c477fd8a61884a3f57c9df2eaef16d2631ac950e426d822180a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0Cx0HhdplmGIqlFBcpv0qe.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0Cx0HhdplmGIqlFBcpv0qe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e28c2677284875a8fd7990662c140613af749566040c77932006e68dbeb3bf9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4VnHpmU2o6GAMvurIOBVLR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4VnHpmU2o6GAMvurIOBVLR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1504898f2a5df32145076ffc801bd450021e5365602019399f95102e9cc20fe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3fFsrT33YYugSoP189NtpW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3fFsrT33YYugSoP189NtpW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4838a6140cbb615b3d144ec82fbaf4f6010a643f92c22b4315b1fda7f72fc97e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0iXHrpMJiPxIhKvtapAedq.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0iXHrpMJiPxIhKvtapAedq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24cda184cebf5e34a55d4687682e02e80f7a6a33cfdfde3e9c35255ea51dc06. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0LCujc2Th0jcQeXY6q7XdY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0LCujc2Th0jcQeXY6q7XdY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4afb9d4b7848c4e0fda96d499382ac99768fc025b46e2a94e1f3f3419bc2da7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4knM4l2byZflMeUQahw5z8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4knM4l2byZflMeUQahw5z8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2ba78640b6f34c8070f9633b88c8d4baace93e5cfcb67bd8b1d0c21047a5c3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3TR5bByKFEs4yRBljkw9ZK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3TR5bByKFEs4yRBljkw9ZK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00433f65874d53572a75a1a190bcbba9c59eb0823e5ffc939cbac4ed04b11b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ff3WViUh5hZUZ9Dyo5YxX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3ff3WViUh5hZUZ9Dyo5YxX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350af83b0175327f4d6434aa5332d8f52a2aa0ff79995fcbdf52b7898324d01. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/16YRajpxbceAQ7cpbGBsrE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/16YRajpxbceAQ7cpbGBsrE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dadd9e8509bb08511bba96f766579178da8151ca3757d8935f8f8b4ff9d3f2e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0MNdl6rQVlYK1iFSz6ojaM.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0MNdl6rQVlYK1iFSz6ojaM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f119f2c8c02818c6ecca2a630366517c522336b9c839fe348df624d582aac95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/25b8hpH1Rv4CbpQGcHFJA9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/25b8hpH1Rv4CbpQGcHFJA9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f4806b8198e6efbcf3ed2b86e0e1fb6d88ef603ebeaf98532ff8ebaafecd11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7zRDUblbYlmeWEKBDPJybI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7zRDUblbYlmeWEKBDPJybI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bc75e4c20ecb73b76c17c97c4e7c77309188fe0b6a22f002bdb0849a8e8327. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/29Hv4laGFt3sI4BebpvzqJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/29Hv4laGFt3sI4BebpvzqJ.