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 0x96055c7a40409387a1a8c0be61d8bc7f0696c8b22d3849caa820bd5e732d5117. 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/4171cb0f-be40-4552-9693-569ca70ca9c5.json and https://artists.proofprofile.net/proofs/artist/4171cb0f-be40-4552-9693-569ca70ca9c5.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 0xd82285a7b7a7c7748d098930bd38e132cde64f4d37d17a7381b079627a28d9e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6o8QWv8Gti3tKBVhZwQZyx.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/6o8QWv8Gti3tKBVhZwQZyx.
{"copyright_id":"0x14a754f74f9a31c80fbc99a9e0ca1bd61bd26a0db6f4dd11f378ba8be9ebfeca","isrc":"CZUM72000109","name":"Nosy sněhem zaváté","registered_at":"2026-06-30T01:16:47Z","spotify_id":"2t2Ns77W4Qn69JHnRgTES3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a754f74f9a31c80fbc99a9e0ca1bd61bd26a0db6f4dd11f378ba8be9ebfeca. 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/2t2Ns77W4Qn69JHnRgTES3.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/2t2Ns77W4Qn69JHnRgTES3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50876f00b0314c7a49c1ff26c3b156b8639ecf02371cc65d2c09014f63f22434. 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/2qZ3wDnz1dT7ql1SKNC6oh.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/2qZ3wDnz1dT7ql1SKNC6oh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a26dcc54863470e4433435da68df10f2b5b22e385bbf328e0caff899124e8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3zGSG7RCfhaHcXwF88Xwu8.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/3zGSG7RCfhaHcXwF88Xwu8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632ae32f82c4fbcb55d911bca5aa62784a46e736a06cf8984554a8c34026e97b. 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/4xRzdpGzckNAuFcCApMKR2.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/4xRzdpGzckNAuFcCApMKR2.
ghe ssybalnom (with ACAT, Psycho Rhyme & B-Free)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7b00e725a2558c8ca5e1519532831b44991600733ba42793aa0ab90653990f. 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/72QrhNxt8upC2KGBMiydpP.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/72QrhNxt8upC2KGBMiydpP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7b00e725a2558c8ca5e1519532831b44991600733ba42793aa0ab90653990f. 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/0odCKoN0iWB0vJ4GxEOLML.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/0odCKoN0iWB0vJ4GxEOLML.
{"copyright_id":"0x4094c1532a1d14c0e79963ebbad2fde27d035f398549df965ab097d8943a44a6","isrc":"CZA232000207","name":"Praha II (feat. Psycho Rhyme)","registered_at":"2026-06-05T16:59:07Z","spotify_id":"6e8qlXR3FY8fGfqtRkZXGP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4094c1532a1d14c0e79963ebbad2fde27d035f398549df965ab097d8943a44a6. 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/6e8qlXR3FY8fGfqtRkZXGP.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/6e8qlXR3FY8fGfqtRkZXGP.
{"copyright_id":"0x27f5dd69ef005b4b0c1fd3ac4a2e2f2def9dfdf51663e0010063f7b435b8e372","isrc":"CZK801700093","name":"Coke N Koule","registered_at":"2026-06-04T13:06:30Z","spotify_id":"4MxhgJ9tqhHLOAZK65VsnY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f5dd69ef005b4b0c1fd3ac4a2e2f2def9dfdf51663e0010063f7b435b8e372. 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/4MxhgJ9tqhHLOAZK65VsnY.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/4MxhgJ9tqhHLOAZK65VsnY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf279826b620b1777eba39b4e7a1cc15768e243615c75ac1b24fd13d5388ea31b. 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/53RXDXq7KE6xdC3NTHvhNT.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/53RXDXq7KE6xdC3NTHvhNT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3c4775b7483db31743c85ba7e0492d7c6c2eb1f6f58ef19c8cc29c2377a9ae. 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/2MBDzD6ch47mfb7cXKtlJT.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/2MBDzD6ch47mfb7cXKtlJT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4232bc92137b1dc936988e5278de1d133b1c49773ca9821c8348894c0d12c42d. 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/1QxlerVky07CwIQ0EJV6KF.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/1QxlerVky07CwIQ0EJV6KF.