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 0x1ecc5b4e18cff9576e5304cccd9730dc6031b3b6da0b721b6afa6344c9ee0ba9. 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/f49fdb0d-4850-4027-92f2-bf9c0d36c722.json and https://artists.proofprofile.net/proofs/artist/f49fdb0d-4850-4027-92f2-bf9c0d36c722.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 0x83e7723574c4e23b21e1c810d2684a6d66adbdb597ad533e5ed68d13a472ed97. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6VtwPzJHa2O3ipcD0Cnt6S.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/6VtwPzJHa2O3ipcD0Cnt6S.
Party Animal (Soundtrack from ”Rymdresan”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca6981b0f43af0a056a933134130b01a4641a6464d4758636fb860d8f7fe81. 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/12fYEY6L7M2k7qFWgMEwXn.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/12fYEY6L7M2k7qFWgMEwXn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d3118bdb2f8536ec567672291f7c2ea4cc9a51c1171a019c18f86a74832d44. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2CGSIAkgrchoFLl4YWS4ob.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/2CGSIAkgrchoFLl4YWS4ob.
{"copyright_id":"0x9d1ce97bec59b053abc57313f9c275269bd1c677098ca5a973f41112a68cd91d","isrc":"SEPQA2200172","name":"Det kommer bli bra","registered_at":"2026-01-29T04:52:12Z","spotify_id":"5U5hlK1E0ozMOtd1cynRnH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1ce97bec59b053abc57313f9c275269bd1c677098ca5a973f41112a68cd91d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5U5hlK1E0ozMOtd1cynRnH.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/5U5hlK1E0ozMOtd1cynRnH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d3118bdb2f8536ec567672291f7c2ea4cc9a51c1171a019c18f86a74832d44. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0EpqhzrJ9PH5fmvbMTNXBX.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/0EpqhzrJ9PH5fmvbMTNXBX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399d594becb7668e21ff608094a71fb14ba0fa037fb4ee0ea8af07ca7922007. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5bGjeVaOxDbBB4CcapJZRs.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/5bGjeVaOxDbBB4CcapJZRs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8e7f061a3f64a388c210d544ad8177d0489d5b083aaca200a8923a04092fc6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6LsuFUfNwDLuHwqG2CRYib.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/6LsuFUfNwDLuHwqG2CRYib.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c337008a31f0c3539dd80b96d1e8096a442f2a5bc5a79cc5065bb2bb35b403e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ckphgq4K9iqvDQ2bwP86z.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/3ckphgq4K9iqvDQ2bwP86z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe285a724b0fe9ce4b19cb0d577d8f04a0f7f6655314c08905968ff4e334a19. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7J855JxtLLDGoL5HeHdayI.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/7J855JxtLLDGoL5HeHdayI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca6981b0f43af0a056a933134130b01a4641a6464d4758636fb860d8f7fe81. 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/7ERXqRvbeCGNmiLqKJdFkh.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/7ERXqRvbeCGNmiLqKJdFkh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe285a724b0fe9ce4b19cb0d577d8f04a0f7f6655314c08905968ff4e334a19. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6qBMnV93Zyc7fjD1gxY9xc.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/6qBMnV93Zyc7fjD1gxY9xc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca6981b0f43af0a056a933134130b01a4641a6464d4758636fb860d8f7fe81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/67HK0VEXkSPgZlqePrVJK2.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/67HK0VEXkSPgZlqePrVJK2.