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 0x3a9f34829453a725f4a2063d584df7508c0b8a18d943e2a83c34de1f3d6e603b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da55e0d9-4c49-49bb-bdd0-19c03a52f099.json and https://artists.proofprofile.net/proofs/artist/da55e0d9-4c49-49bb-bdd0-19c03a52f099.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 0x5e4fb1959585b43b7654d53691ed2cae9de4308e54fe46cd1e3bb5494eb5288c. 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/4kUrMmvlA9Wfoh19fRebWA.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/4kUrMmvlA9Wfoh19fRebWA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d818df7f662a18575e2220de358dd0dcb65b69d25e6af893d73d7a11c6ce51. 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/3y3lKcIhIVZyEIs1b4f08M.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/3y3lKcIhIVZyEIs1b4f08M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a1e8bc48b9dca95f3a6a431948f6a16680bb006db467556b4497e3bf487f96. 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/4SHs4LPwyldUAOZ1gOa1Bm.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/4SHs4LPwyldUAOZ1gOa1Bm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c1fc42dff5ce275051741544bd87c4e13d9e316b8b81b4681694c94852503. 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/6LNXFVrh8QpF6fM8zzlNA1.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/6LNXFVrh8QpF6fM8zzlNA1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71b251449c109aff15f826de7d6eafffa8b57df0f75210fa0f0b7b3382e13fc. 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/5d679q855dtS8bG3MWgknn.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/5d679q855dtS8bG3MWgknn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304ed338152aed4f89130cbe52a92a159c50050dc09fdcead725c28c86d7ecd0. 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/4Fg85khPmA8BGFvKIi3smZ.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/4Fg85khPmA8BGFvKIi3smZ.
{"copyright_id":"0xd3ba9c61ad7558956a7bd06704761d183184d3e9ec72a0656a4c48efc2d8e31c","isrc":"QZW9L2339507","name":"LOS DEL RATING X SIEMPRE","registered_at":"2026-06-09T17:38:32Z","spotify_id":"0iPtelnGHTTsUWmLclcNPK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ba9c61ad7558956a7bd06704761d183184d3e9ec72a0656a4c48efc2d8e31c. 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/0iPtelnGHTTsUWmLclcNPK.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/0iPtelnGHTTsUWmLclcNPK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7989d10d8aa860423c090b8dc2930128c24b0f73ea3d2ae24ac154e6acfe6dc3. 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/683G3UJPYfWv3A9lg7bZIk.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/683G3UJPYfWv3A9lg7bZIk.
{"copyright_id":"0x327023e3e48fdce65ec759c4fad189c5ff7492a7fc2c14b6755c1cdb9f24231c","isrc":"QZHN72100571","name":"Como Le Hago Yo","registered_at":"2026-06-05T09:41:20Z","spotify_id":"0v38ifPJbCTWzSewvGkYP1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327023e3e48fdce65ec759c4fad189c5ff7492a7fc2c14b6755c1cdb9f24231c. 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/0v38ifPJbCTWzSewvGkYP1.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/0v38ifPJbCTWzSewvGkYP1.
{"copyright_id":"0xe257b81d6872aaf0bd9608f4019ebb6b77f10911a782a77708a6b54bbfe693eb","isrc":"GBWUL2077982","name":"Llegaron Los Wachitos","registered_at":"2026-06-11T16:57:10Z","spotify_id":"2f98qrjRD03hlInSnhdvyp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257b81d6872aaf0bd9608f4019ebb6b77f10911a782a77708a6b54bbfe693eb. 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/2f98qrjRD03hlInSnhdvyp.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/2f98qrjRD03hlInSnhdvyp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8b90894358b73d865cf51c47617c5bb836fa1e3e39fbb6197fa0016fbb139d. 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/6nFDWk3lnfeoM4qpx9lJ6J.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/6nFDWk3lnfeoM4qpx9lJ6J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebb2767f86e405b9c0c30bae44643736830d62795439ff11c6a6c2f6b48c058. 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/7G2dCS03QCyrGr2rWAf48W.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/7G2dCS03QCyrGr2rWAf48W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fb3bdeff444167c260694f54cec01762debe8f1dec03107f3052cf03a70093. 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/27XZM5MB0LG4uu2ehPhR8W.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/27XZM5MB0LG4uu2ehPhR8W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4247c47b1641a37ce606597e730e4524f767cc2873b11f0e9d2b34752bd0615a. 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/3F5BQiXmG0seyQvTHfHP1g.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/3F5BQiXmG0seyQvTHfHP1g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1867a3ea79727398f056116194f926fcb25ad67512ea4a7e4c7af5d11b80e. 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/3BUlwIrKmjOn3SXU2OILAN.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/3BUlwIrKmjOn3SXU2OILAN.
Scandal Rosa: (The Lost Tapes,) [Vol] [2]
{"copyright_id":"0xa4a958cab627523e7645ef6af5f71556dbe0192178320ac8c5c6f844a38ced7a","isrc":"CH6541632953","name":"Que Se Mueran de Envidia","registered_at":"2026-06-25T23:25:43Z","spotify_id":"2a92zyrOafMtWP2qJbym9K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a958cab627523e7645ef6af5f71556dbe0192178320ac8c5c6f844a38ced7a. 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/2a92zyrOafMtWP2qJbym9K.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/2a92zyrOafMtWP2qJbym9K.
A String of Pearls - Orchestra Wives: At Last - Tuxedo Junction - In the Mood
The United States Air Force Band Airmen of Note