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 0x7b64498a54f72b2002b49ee28a27297793b459018c61c8623c842f253d0c5800. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d10c1ffa-1e3b-43bb-98c2-31a380b1698c.json and https://artists.proofprofile.net/proofs/artist/d10c1ffa-1e3b-43bb-98c2-31a380b1698c.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 0x1860484f24424003ff416e81d920a71308914693f330dac14129ddf883c13a2c. 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/0sFlZh0lAgDZFzVhr20EHs.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/0sFlZh0lAgDZFzVhr20EHs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6694a563820ca6d6c4a643647d9449a72956b19198c4b7ebde33f779f67a1dd. 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/4dHCfudExLp7m0JzrMRwLk.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/4dHCfudExLp7m0JzrMRwLk.
{"copyright_id":"0x7462d2ced35d3dfb5b616b36c000fadb922eb9aa4760a254b4ab4c0f2c05ae51","isrc":"US4ZV1110207","name":"Back Pack","registered_at":"2026-06-07T05:53:44Z","spotify_id":"5ICPF6BCkocPEUJBo3csLZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7462d2ced35d3dfb5b616b36c000fadb922eb9aa4760a254b4ab4c0f2c05ae51. 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/5ICPF6BCkocPEUJBo3csLZ.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/5ICPF6BCkocPEUJBo3csLZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8ec50f26570a4b176f3f096ab24dfaf86aef5c931b44da54c4a18d1c43ef4c. 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/1Tg3EakKDTYW53mNba2X0k.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/1Tg3EakKDTYW53mNba2X0k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd4d775048d619abd0815b317177678562bcd6a2895a15a97c2f1d9d736c72. 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/0n0utxULqWuA0QdxcCQWMG.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/0n0utxULqWuA0QdxcCQWMG.
{"copyright_id":"0x3a1647068d2849e162b8cec224be9d1fb4c990eab919b31a8bd74c06e7ec5f3f","isrc":"US4ZV1110210","name":"Hate, Rain on Me","registered_at":"2026-06-05T17:57:06Z","spotify_id":"0IGDJCEx59Y2xZV7tQwIqa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1647068d2849e162b8cec224be9d1fb4c990eab919b31a8bd74c06e7ec5f3f. 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/0IGDJCEx59Y2xZV7tQwIqa.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/0IGDJCEx59Y2xZV7tQwIqa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05aebb73cf359b2f73b24367a22a34173d4e3f231797f1316b0547782a631d5. 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/7877qPL0akizGKxqFMbOBk.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/7877qPL0akizGKxqFMbOBk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6208e75b740d560862e362206bb69213f9b4b442b870c866fa79cfd226af42c4. 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/2ddtMNYO2z82mCUWiFzVZG.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/2ddtMNYO2z82mCUWiFzVZG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a7dc7db063895be7f99696d9fb42371f44667cf2fa8df4f98679788e4e69a. 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/7kyiOXKs2TA7V1URtQ50iW.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/7kyiOXKs2TA7V1URtQ50iW.
Zombie by the Cranberries by Andrew Jackson Jihad
{"copyright_id":"0x873d04ed3c2574d37f45c7de2f9af4edbc08fe0b3336fab44abc3c3135133c63","isrc":"US4ZV1110214","name":"Zombie by the Cranberries by Andrew Jackson Jihad","registered_at":"2026-06-08T14:08:37Z","spotify_id":"21MF9EEyqZJM5nN0czR1AO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d04ed3c2574d37f45c7de2f9af4edbc08fe0b3336fab44abc3c3135133c63. 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/21MF9EEyqZJM5nN0czR1AO.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/21MF9EEyqZJM5nN0czR1AO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef5ed7f466511dd63b073094dab7d468814a187ba0a165c543dfb789913a331. 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/5t3ec5Y1IkYCbAo81vfeXr.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/5t3ec5Y1IkYCbAo81vfeXr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ba577405394efe40c5356e701b92a12404fbd49d5de1001e5389934f44ec5. 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/3YxQt3jfpDq9aQliXgE6FE.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/3YxQt3jfpDq9aQliXgE6FE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6138b4489a7853aeaa870a1d61ef81228c16578380e76590cf0c338d21de1419. 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/1MM4FVaMbvzGwKyEgOqvfh.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/1MM4FVaMbvzGwKyEgOqvfh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4975068c02f964a2abcf69d8f6aff642c8f225419d214273f43d5192db8c86cc. 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/1G07UGwTQwvJFBjbKkFwGj.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/1G07UGwTQwvJFBjbKkFwGj.
{"copyright_id":"0xa482742b04c2bd796be829adff4ab9fa68ce0dc8742ff42105ea8e0eaa27f42a","isrc":"US4ZV1110219","name":"Big Bird","registered_at":"2026-06-06T05:51:22Z","spotify_id":"2kEWvmYjjpsYnTni8IfpU8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa482742b04c2bd796be829adff4ab9fa68ce0dc8742ff42105ea8e0eaa27f42a. 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/2kEWvmYjjpsYnTni8IfpU8.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/2kEWvmYjjpsYnTni8IfpU8.
Xtra Mile High Club Vol. 3 (Yanks Vs Limeies plus 1 German)