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 0x10264f49a39afd154ec1c73f8e0994b6874304bc268d0f7814da9d34fd9bdfe1. 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/e0a1f4a2-2786-4a85-a0f9-b53f594b5790.json and https://artists.proofprofile.net/proofs/artist/e0a1f4a2-2786-4a85-a0f9-b53f594b5790.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 0x5297c64dcc5248686e9589ed4a19208a3f3f8ee124851c36905da1bb657004e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0bEOey9OHVNI8MfEc2328F.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/0bEOey9OHVNI8MfEc2328F.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e74dea59d22bd6fa7c9f2b119593fdada9ee448399b5ddf803a8640d3ebe26. 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/7ysWJb9b4V7RP2j3KvF44X.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/7ysWJb9b4V7RP2j3KvF44X.
{"copyright_id":"0xf3dcba11c4cfeb318888835ec62bb6ffb489390e608d759aefc710e3ace7c2fa","isrc":"SE5W32100998","name":"Pouring Down","registered_at":"2026-06-06T09:04:25Z","spotify_id":"61gQXDkgy7UQJdu1UV3vk6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dcba11c4cfeb318888835ec62bb6ffb489390e608d759aefc710e3ace7c2fa. 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/61gQXDkgy7UQJdu1UV3vk6.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/61gQXDkgy7UQJdu1UV3vk6.
{"copyright_id":"0x27c95f9fe8a26bc1d4c50faa5fbfa343c90ba164fdd7b347838c0e71e1c0dbcd","isrc":"SE5W32100999","name":"Let It Rain","registered_at":"2026-06-01T18:01:14Z","spotify_id":"2iM7PybcbJwrzzS7by70m8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c95f9fe8a26bc1d4c50faa5fbfa343c90ba164fdd7b347838c0e71e1c0dbcd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2iM7PybcbJwrzzS7by70m8.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/2iM7PybcbJwrzzS7by70m8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc1410671ae25486065d288cc3e67d42bf104715d65312ee5f4af7c8e7c1046. 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/4dHAbUeFAX0E2wGz2z7akr.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/4dHAbUeFAX0E2wGz2z7akr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547253ef81c7f881147444a968ac69efd06086b0a12ef320a5e512e8fef68d47. 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/08k1NgPtTOtopmsDHHkWxL.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/08k1NgPtTOtopmsDHHkWxL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3847b1870efb42978969102442336d09c990b122e338a210536fe1e4eae640b. 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/5URhpTxX3p2xzgWFvpuRhL.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/5URhpTxX3p2xzgWFvpuRhL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb349a979761e40d831597232e247a9a1774b2d96e4aaad18fa35729670055237. 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/4ncYIiLYLky0w3gvUhB1lN.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/4ncYIiLYLky0w3gvUhB1lN.
{"copyright_id":"0x27d7c7e84679c1f4eecca65b118a1f4b9b0f3ac2bca5dfd7d741d32827669ee3","isrc":"SE5W32102654","name":"If The Sky Was A Waterfall","registered_at":"2026-06-07T06:21:10Z","spotify_id":"6QwiepnWq7ekQW1DI4jPAO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d7c7e84679c1f4eecca65b118a1f4b9b0f3ac2bca5dfd7d741d32827669ee3. 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/6QwiepnWq7ekQW1DI4jPAO.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/6QwiepnWq7ekQW1DI4jPAO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01589b69483422fe4d296e278e9bfaa12f48f9efe3765a684f3a4032cc27b177. 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/1u6iUoQxGOhxlMyL3p4kiI.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/1u6iUoQxGOhxlMyL3p4kiI.
{"copyright_id":"0xaa3982aa8f625439d8e05073baa1eac73b59c45efa209a8483acc28b13c57f90","isrc":"SE5W32102656","name":"24 Hours Of Rain","registered_at":"2026-06-10T01:49:31Z","spotify_id":"4yug1KoDsXKKvipgcXusMc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3982aa8f625439d8e05073baa1eac73b59c45efa209a8483acc28b13c57f90. 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/4yug1KoDsXKKvipgcXusMc.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/4yug1KoDsXKKvipgcXusMc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c29bec87e9aff56f2444668b60ca7c9b17e38c11c178401172919792a70782. 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/7mkpGis8FAbz4R0B1xtQjM.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/7mkpGis8FAbz4R0B1xtQjM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418d1ef7416940bf1155b7354740c97221cd5bf6cabb0d481577b6a3b30f0871. 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/38OocD62bQCfLqe9LrzfFX.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/38OocD62bQCfLqe9LrzfFX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa1156223718848c774ee6c38dfd8b6503253b239e510a3b22c55bf25a29b5. 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/4TEP9jBuuA3lD3cd2mjezF.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/4TEP9jBuuA3lD3cd2mjezF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6eb94b24d748bd3a00ea5ffa920bb83a585f27747d09a58322a1849ed8bda. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47tVC0DJOKzT4qv9ESdGLO.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/47tVC0DJOKzT4qv9ESdGLO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b85eb1ad9f25566d74f1724701852369c91f901552aea08cd135d7224ce831. 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/3WGh1efxezvPQMvFREvGId.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/3WGh1efxezvPQMvFREvGId.