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 0xc34305209cfde39d7ca50e97e04c89fa12cd157d2fc6e19b5186aea5d7319323. 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/51e5fe13-ac34-4afc-b697-b658478f5715.json and https://artists.proofprofile.net/proofs/artist/51e5fe13-ac34-4afc-b697-b658478f5715.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 0x910b388bf65f115ec1634291f066a2872d219f8a8204c9f7f364849091d1fd04. 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/5T2HHBzb4AcGFNM7uO9H2A.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/5T2HHBzb4AcGFNM7uO9H2A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be3b642ec45b9cf11961deac6511da065e99578bcc396584092e2fef5135476. 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/1wTgp4ai4bsxQ4g9rE7fX5.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/1wTgp4ai4bsxQ4g9rE7fX5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800764e4b75bad19e4da7fe10d1e59506ec038cba2f43795fd2f5816b1717a81. 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/2t489KYBX86TPPoiUTXmXE.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/2t489KYBX86TPPoiUTXmXE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205e1a64477cf04ae5fba339968408d49df8462ce0a43fd1e0cd158dbd3959e. 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/15ABfJeZXa5by6y91iVRNC.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/15ABfJeZXa5by6y91iVRNC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7553b03a8e5ece1e583cd1a73dde3c6421207487d871fcc2c2ef382a931916. 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/1ugYv6i4dq26nSDt7gbnFn.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/1ugYv6i4dq26nSDt7gbnFn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940d3636e85b0a4761b8fc0b98ef1b09256c8ed7f89aeb55dd282d17c7607a42. 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/08eSUOskqzYsxN2wjTVWDh.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/08eSUOskqzYsxN2wjTVWDh.
{"copyright_id":"0x76cd79ba79bfa8c79d480e921a523761a137be9bdc9c5f3acbb5b4fa9ddff551","isrc":"NLG661900725","name":"Van Waar Ik Kom","registered_at":"2026-06-07T22:06:40Z","spotify_id":"5uCPYiWQyfEkUBubGZwoeF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd79ba79bfa8c79d480e921a523761a137be9bdc9c5f3acbb5b4fa9ddff551. 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/5uCPYiWQyfEkUBubGZwoeF.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/5uCPYiWQyfEkUBubGZwoeF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7903b4cc65f67c2ef13dace8cc4c64a0b4bd554072037b819d18cae5a186bb3a. 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/3Z2Gmnk2OE0xf41Z1vz9C9.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/3Z2Gmnk2OE0xf41Z1vz9C9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49d81e164712e236cee19c1603b8d6d9c475cb99ab66561380a57205db2f56c. 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/5CuuJ2Wm6bkgY43hsHtz90.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/5CuuJ2Wm6bkgY43hsHtz90.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d6127acdf6e4bf6ea3cddc046f7f03456dc115c84892fcafa4587318e6a7aa. 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/2ykf8BNAojuG6AkZvIL6d8.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/2ykf8BNAojuG6AkZvIL6d8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05037d3d34a673603d05038724d3d6f127d97c39cef4872a847b615578842e38. 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/0CH69HJHa9Grb66fJrNn9Q.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/0CH69HJHa9Grb66fJrNn9Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05037d3d34a673603d05038724d3d6f127d97c39cef4872a847b615578842e38. 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/0l2bKxCcVTInmIPuVDBF8f.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/0l2bKxCcVTInmIPuVDBF8f.
Out Of Town (feat. KM, NAVI & Quincy Promes)
{"copyright_id":"0x64ddac9dbe4c7a57fd74fe004abcc06ebadc46b615fefebfa464635ff4278ba9","isrc":"BEB472000044","name":"Out Of Town (feat. KM, NAVI & Quincy Promes)","registered_at":"2026-06-05T18:05:50Z","spotify_id":"1mPOCSvAyS4n2KKSg7YC0f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ddac9dbe4c7a57fd74fe004abcc06ebadc46b615fefebfa464635ff4278ba9. 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/1mPOCSvAyS4n2KKSg7YC0f.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/1mPOCSvAyS4n2KKSg7YC0f.
{"copyright_id":"0x64ddac9dbe4c7a57fd74fe004abcc06ebadc46b615fefebfa464635ff4278ba9","isrc":"BEB472000044","name":"Out Of Town (feat. KM, NAVI & Quincy Promes)","registered_at":"2026-06-05T18:05:50Z","spotify_id":"7BuV6kuGMUDAmx0tl9qfP5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ddac9dbe4c7a57fd74fe004abcc06ebadc46b615fefebfa464635ff4278ba9. 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/7BuV6kuGMUDAmx0tl9qfP5.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/7BuV6kuGMUDAmx0tl9qfP5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58435b79978025ba91bf1ab367e3227cada67c48471e272c41f0f132fc2aeade. 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/6UjHVciesrog3hwD1rkCbE.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/6UjHVciesrog3hwD1rkCbE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7af87fb2e68bc120b6b27058820f1fc7d4829753dc8ec4743218c08a2dee91. 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/0l9hrhcYm0VkjmdgIcIeH7.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/0l9hrhcYm0VkjmdgIcIeH7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b3ffc8584caabae87222334d6a2e3f1fe41914c552980aa8a9ad5202fecf0f. 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/7n8Si88KRe0xkKPcXeKHbk.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/7n8Si88KRe0xkKPcXeKHbk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2717421a95e04901d6966d0f1cea0e270b1921ad38376f388da6d0afec0a4416. 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/6pVFriVgLzSG6mbKQ7TiM2.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/6pVFriVgLzSG6mbKQ7TiM2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2845806984685da6b9a2401cbee1c69b042e2804ecb700581bd5ce0ca68c23d8. 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/41MKF3PBJXoCIerSVjMK9s.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/41MKF3PBJXoCIerSVjMK9s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ca67d9cc00d5e1c7520c13a59d5bc714a850e21ee972774747004e73d97b87. 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/5R8kFoGTBtNlqVFdfD5UVq.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/5R8kFoGTBtNlqVFdfD5UVq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6865c8b223e08dfc095979a495f8f9805d057786498e35ff6d75a7f33babeaea. 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/5DPUbj4aBkdF2QvvzYo5el.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/5DPUbj4aBkdF2QvvzYo5el.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc959e1fc2b70a9409928034f75df67f511015c35361dc02b27e839efae6a95c2. 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/22jz9nWT9vTiTsX4NogDKP.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/22jz9nWT9vTiTsX4NogDKP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22be10034b458d9c15d2ae08bc82fb83ad498d184df31c8ed658540d1cb5982. 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/6CDBbyTUMat6AOx08pe2pI.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/6CDBbyTUMat6AOx08pe2pI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201156db3ffc5e51bdfc71265e43245b27db9083689517b353a9b55dd1feb119. 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/6qqaeEISRNEgoltytCtcPi.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/6qqaeEISRNEgoltytCtcPi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38860ccb116802f8516f8b9726b29ca379d0deb8f648279e933241074b525b87. 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/426pcgxi1eCywzJYpwLPh1.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/426pcgxi1eCywzJYpwLPh1.
{"copyright_id":"0x071f20eac34f7abe4d90b8614a41e1d4edbea460f5a6b85785db35ed70ad40cb","isrc":"NLG662100455","name":"New Wave","registered_at":"2026-06-25T22:04:48Z","spotify_id":"521hFUVtefWMhLPFwtsGtk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071f20eac34f7abe4d90b8614a41e1d4edbea460f5a6b85785db35ed70ad40cb. 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/521hFUVtefWMhLPFwtsGtk.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/521hFUVtefWMhLPFwtsGtk.