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 0x5fb8626e7fa8ff50904786453f7ef6b18c3366d40d10f1fb42231baab3ee5297. 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/5bf0cad1-c95e-41c1-a657-2fae79c1cba7.json and https://artists.proofprofile.net/proofs/artist/5bf0cad1-c95e-41c1-a657-2fae79c1cba7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hazbin Hotel Original Soundtrack (Part 1)
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 0x23fd6e2310b78b73db5efe74d8ee423bf32b79852cea6de399af6013fc7e8913. 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/4Po97bPnn3ISdEkuJBMt2f.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/4Po97bPnn3ISdEkuJBMt2f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30dbcce1158f9a00ad2734bc0a9294581a51205955a01832152152e34ae1ded. 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/6dss2WRbaDVKw4vpZlNxSv.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/6dss2WRbaDVKw4vpZlNxSv.
His Name Is Lancelot - Original Broadway Cast Recording: "Spamalot"
{"copyright_id":"0xb8da3daefde5649d9e8f73f28e857a7cfbf26354ca7370d9dd82984862d2a36c","isrc":"USUMC0500045","name":"His Name Is Lancelot - Original Broadway Cast Recording: \"Spamalot\"","registered_at":"2026-06-07T07:51:02Z","spotify_id":"5hSKv7KynizdK5S9JSRmAh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da3daefde5649d9e8f73f28e857a7cfbf26354ca7370d9dd82984862d2a36c. 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/5hSKv7KynizdK5S9JSRmAh.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/5hSKv7KynizdK5S9JSRmAh.
Monks Chant / He Is Not Dead Yet - Original Broadway Cast Recording: "Spamalot"
{"copyright_id":"0xaa3466d174b972dcd0fe372d10cb543b38e4afed4c0eb6e9cc1aaed12fd42a69","isrc":"USUMC0500059","name":"Monks Chant / He Is Not Dead Yet - Original Broadway Cast Recording: \"Spamalot\"","registered_at":"2026-06-07T13:57:42Z","spotify_id":"3tl5aGjKkwfZDA3PkiGSRC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3466d174b972dcd0fe372d10cb543b38e4afed4c0eb6e9cc1aaed12fd42a69. 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/3tl5aGjKkwfZDA3PkiGSRC.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/3tl5aGjKkwfZDA3PkiGSRC.
Historian's Introduction to Act I - Original Broadway Cast Recording: "Spamalot"
{"copyright_id":"0x6c083e309a286eda84132c2a90c5a73a214f87dc7c96d36620ac1026587e868e","isrc":"USUMC0500046","name":"Historian's Introduction to Act I - Original Broadway Cast Recording: \"Spamalot\"","registered_at":"2026-06-09T04:43:28Z","spotify_id":"2rbkwvwtdWpDwthWnTpJMj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c083e309a286eda84132c2a90c5a73a214f87dc7c96d36620ac1026587e868e. 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/2rbkwvwtdWpDwthWnTpJMj.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/2rbkwvwtdWpDwthWnTpJMj.
Where Are You? - Original Broadway Cast Recording: "Spamalot"
{"copyright_id":"0xbdebbaa219b435b60fad44eef767c2c8cab3f4015296d5428391671ef73d2e8c","isrc":"USUMC0500057","name":"Where Are You? - Original Broadway Cast Recording: \"Spamalot\"","registered_at":"2026-06-09T18:41:44Z","spotify_id":"00OHXqfI4QQN25lbIipmaZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdebbaa219b435b60fad44eef767c2c8cab3f4015296d5428391671ef73d2e8c. 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/00OHXqfI4QQN25lbIipmaZ.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/00OHXqfI4QQN25lbIipmaZ.
{"copyright_id":"0xb8da3daefde5649d9e8f73f28e857a7cfbf26354ca7370d9dd82984862d2a36c","isrc":"USUMC0500045","name":"His Name Is Lancelot - Original Broadway Cast Recording: \"Spamalot\"","registered_at":"2026-06-07T07:51:02Z","spotify_id":"4onUtoa1blLCk3Wg27jo4P","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da3daefde5649d9e8f73f28e857a7cfbf26354ca7370d9dd82984862d2a36c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4onUtoa1blLCk3Wg27jo4P.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/4onUtoa1blLCk3Wg27jo4P.
Historian's Introduction to Act II - Original Broadway Cast Recording: "Spamalot"
Legally Blonde The Musical (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09b6a85cd43d1b3a90c47774db4586c683d23ec62b1d086d07f855441723285. 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/4haWbMjy6mwNld2d9IA8mq.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/4haWbMjy6mwNld2d9IA8mq.
{"copyright_id":"0x6e9c8952282981dfbf60db4e9adb9f5358fdadff30d186ee346dad3dae61fc29","isrc":"USSK30720010","name":"Chip on My Shoulder","registered_at":"2026-06-04T08:32:53Z","spotify_id":"2UTS33qrSdZUD6zApZXDcI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c8952282981dfbf60db4e9adb9f5358fdadff30d186ee346dad3dae61fc29. 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/2UTS33qrSdZUD6zApZXDcI.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/2UTS33qrSdZUD6zApZXDcI.
{"copyright_id":"0x712d4124e6ed61532fccac93860f436045deab2a1f7c00b01504dee27c08a9bf","isrc":"USSK30720013","name":"Take It Like a Man","registered_at":"2026-06-04T10:09:35Z","spotify_id":"7ti94QY6CIjiEEKEqgGRLw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d4124e6ed61532fccac93860f436045deab2a1f7c00b01504dee27c08a9bf. 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/7ti94QY6CIjiEEKEqgGRLw.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/7ti94QY6CIjiEEKEqgGRLw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc8e6b005d17b88c85d5ce7e633bcb9ba09821962953c1053ca0c3b212b35d6. 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/1bXV5MjCKNmD8viWpawP9A.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/1bXV5MjCKNmD8viWpawP9A.
Peter Pan Live! (Original Soundtrack of the NBC Television Event)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207f01a73808f60246684d584a77b035dcf6c01595807ee28a16fedb7b2b2cd9. 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/7K8uuuff7qPnA2NMxQ70e1.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/7K8uuuff7qPnA2NMxQ70e1.
Something Rotten! (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc336f082e0029817281bc31a1fec937c55cf2287b08af80e28476cef92eda45b. 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/6RHpM6Lqb2vTXqF1jxTKJa.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/6RHpM6Lqb2vTXqF1jxTKJa.
{"copyright_id":"0x044c4eae7ee4c2de5a53bb47e412f8aba0d59c8ccfeedd33108416a52f42bb0e","isrc":"USSK31523474","name":"Hard to Be the Bard","registered_at":"2026-06-04T07:48:43Z","spotify_id":"7MV1c2eclBShziAJRf3Q0Q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c4eae7ee4c2de5a53bb47e412f8aba0d59c8ccfeedd33108416a52f42bb0e. 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/7MV1c2eclBShziAJRf3Q0Q.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/7MV1c2eclBShziAJRf3Q0Q.
{"copyright_id":"0x4a6cf66f01d90f49fc85046e7c2a6464ce6aa0bb70fda7888eaf3ef225688e40","isrc":"USSK31523478","name":"To Thine Own Self","registered_at":"2026-06-05T22:08:08Z","spotify_id":"0WIxVmvQzey9CvO3le2btz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6cf66f01d90f49fc85046e7c2a6464ce6aa0bb70fda7888eaf3ef225688e40. 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/0WIxVmvQzey9CvO3le2btz.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/0WIxVmvQzey9CvO3le2btz.