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 0x1e1495d9cfd4ef2396e1b1ac3825332cf55625b6ff5f47e211ceeb58c485234a. 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/6d8ae9bd-9084-457b-bfca-48cead09b4d5.json and https://artists.proofprofile.net/proofs/artist/6d8ae9bd-9084-457b-bfca-48cead09b4d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Annie (Original Broadway Cast Recording)
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 0x5171b5e069dbb9a93dc11ce3b2f0b986029d14be250365321e6a8ef380db299f. 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/70X8KyrI4iKZtFCm1vDu5g.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/70X8KyrI4iKZtFCm1vDu5g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922bb2e5ccf0c415ec14252249c1f1be6096acea75b525cc70fad12656d231c7. 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/7mZ8hSSAqkNiUBSGe9hB4E.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/7mZ8hSSAqkNiUBSGe9hB4E.
{"copyright_id":"0x7b218163bf0e9c4e6a107193d2c355ab405f6cab63847b38afd1f2d4777d73c6","isrc":"USSM10410822","name":"Annie: It's the Hard-Knock Life","registered_at":"2026-06-04T14:53:05Z","spotify_id":"2IetGxzkjAYQsoFtvX0fNA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b218163bf0e9c4e6a107193d2c355ab405f6cab63847b38afd1f2d4777d73c6. 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/2IetGxzkjAYQsoFtvX0fNA.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/2IetGxzkjAYQsoFtvX0fNA.
{"copyright_id":"0xa1687b0de399e2d06af74e297e0514caf992b3bf545521bdbed4ab6bbfc3d026","isrc":"USSM10410823","name":"Annie: Tomorrow","registered_at":"2026-06-04T11:50:20Z","spotify_id":"1AXO42HiJSTgPq7KbJAEjp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1687b0de399e2d06af74e297e0514caf992b3bf545521bdbed4ab6bbfc3d026. 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/1AXO42HiJSTgPq7KbJAEjp.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/1AXO42HiJSTgPq7KbJAEjp.
Annie: We'd Like to Thank You, Herbert Hoover
{"copyright_id":"0x5cd7b654c50a473b0abe4dde922631dd3031e8cdb93693e2269544153f82225e","isrc":"USSM10410824","name":"Annie: We'd Like to Thank You, Herbert Hoover","registered_at":"2026-06-07T14:16:04Z","spotify_id":"1hXjnV4Xo31sCulG5nMJFh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd7b654c50a473b0abe4dde922631dd3031e8cdb93693e2269544153f82225e. 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/1hXjnV4Xo31sCulG5nMJFh.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/1hXjnV4Xo31sCulG5nMJFh.
{"copyright_id":"0xa2ec3cc0b58c2e29668672d9065a202d0fb082bb037cd5e9f80360c5a021e8dc","isrc":"USSM10410825","name":"Annie: Little Girls","registered_at":"2026-06-06T18:03:36Z","spotify_id":"7JwOvR5x97BVktbgfVXtDG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ec3cc0b58c2e29668672d9065a202d0fb082bb037cd5e9f80360c5a021e8dc. 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/7JwOvR5x97BVktbgfVXtDG.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/7JwOvR5x97BVktbgfVXtDG.
{"copyright_id":"0x383635fdfad658419609743b6e981ff9b270d47d2a524de1c8a4e50de294aa49","isrc":"USSM10410826","name":"Annie: I Think I'm Gonna Like It Here","registered_at":"2026-06-07T08:04:18Z","spotify_id":"1NktnwKq8p6HEfZZJypNM9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383635fdfad658419609743b6e981ff9b270d47d2a524de1c8a4e50de294aa49. 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/1NktnwKq8p6HEfZZJypNM9.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/1NktnwKq8p6HEfZZJypNM9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be3c867e2e0a6e061d1132d93822784aaaa40a15f255cc125e447c1a0b9f652. 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/1tMI4Ky3S64QPd6sn8g884.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/1tMI4Ky3S64QPd6sn8g884.
{"copyright_id":"0x2a2e1b0d530d50ffef9593fdc8ab798f81779515b92f68b8d0ed0c04584b8be1","isrc":"USSM10410828","name":"Annie: Easy Street","registered_at":"2026-06-07T01:26:18Z","spotify_id":"4PKSzfZMSXVONKuRZJs8om","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2e1b0d530d50ffef9593fdc8ab798f81779515b92f68b8d0ed0c04584b8be1. 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/4PKSzfZMSXVONKuRZJs8om.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/4PKSzfZMSXVONKuRZJs8om.
{"copyright_id":"0x0eb23035003ebc3d85db327dc09f16f36a53756883a357537685d8f868ec01cf","isrc":"USSM10410829","name":"Annie: You Won't Be an Orphan for Long","registered_at":"2026-06-08T21:12:17Z","spotify_id":"1BcDxvzMGfsiaJq38LQcEU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb23035003ebc3d85db327dc09f16f36a53756883a357537685d8f868ec01cf. 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/1BcDxvzMGfsiaJq38LQcEU.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/1BcDxvzMGfsiaJq38LQcEU.
Annie: You're Never Fully Dressed Without a Smile
{"copyright_id":"0xcc7c320bb7b08a250ff94c2a01cea40abddd17d9405b7f317e4d7336499ede2e","isrc":"USSM10410830","name":"Annie: You're Never Fully Dressed Without a Smile","registered_at":"2026-06-06T11:28:02Z","spotify_id":"4JnnwxyYZ6OdYRQSqR9QZR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7c320bb7b08a250ff94c2a01cea40abddd17d9405b7f317e4d7336499ede2e. 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/4JnnwxyYZ6OdYRQSqR9QZR.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/4JnnwxyYZ6OdYRQSqR9QZR.
{"copyright_id":"0x0c8f41c9262ed2ea3af4a9485e23972cd3250d3ac4021b7900de036a540a93d2","isrc":"USSM10410831","name":"Annie: Tomorrow (Reprise)","registered_at":"2026-06-08T12:59:46Z","spotify_id":"5pUjJaoayOT9LFpjeqaw9O","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f41c9262ed2ea3af4a9485e23972cd3250d3ac4021b7900de036a540a93d2. 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/5pUjJaoayOT9LFpjeqaw9O.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/5pUjJaoayOT9LFpjeqaw9O.
{"copyright_id":"0xefa2d2888b7e045ef0285682e841221ddc4b5db10d8e987f4ab7540f16fd3cff","isrc":"USSM10410832","name":"Annie: Something Was Missing","registered_at":"2026-06-09T18:17:08Z","spotify_id":"3o0OUBrOaEko0XHvj9rzH3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa2d2888b7e045ef0285682e841221ddc4b5db10d8e987f4ab7540f16fd3cff. 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/3o0OUBrOaEko0XHvj9rzH3.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/3o0OUBrOaEko0XHvj9rzH3.
{"copyright_id":"0x427bdc3dbe92f5559805dff07232591d0f7d247f0175a2bdcb969ee4b0d50ca4","isrc":"USSM10410833","name":"Annie: I Don't Need Anything But You","registered_at":"2026-06-07T18:09:00Z","spotify_id":"400t0stNsKNbXBJal0ZsyE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427bdc3dbe92f5559805dff07232591d0f7d247f0175a2bdcb969ee4b0d50ca4. 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/400t0stNsKNbXBJal0ZsyE.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/400t0stNsKNbXBJal0ZsyE.
{"copyright_id":"0x3f5cc2a329d9e852a2dfb07e2a94b2cda17800cea4fc9a69a06e8bd680a6962e","isrc":"USSM10410834","name":"Annie: Annie","registered_at":"2026-06-10T05:05:33Z","spotify_id":"2pm83dVcExzrxEV7ixfv7W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5cc2a329d9e852a2dfb07e2a94b2cda17800cea4fc9a69a06e8bd680a6962e. 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/2pm83dVcExzrxEV7ixfv7W.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/2pm83dVcExzrxEV7ixfv7W.
{"copyright_id":"0xb5d79a587b9bee488de1ed44934d3e231c383aa4d78d7cb1dcbdd1635b23a551","isrc":"USSM10410835","name":"Annie: A New Deal for Christmas","registered_at":"2026-06-09T18:13:44Z","spotify_id":"2BbhEeht8277c7vIeDpSZQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d79a587b9bee488de1ed44934d3e231c383aa4d78d7cb1dcbdd1635b23a551. 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/2BbhEeht8277c7vIeDpSZQ.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/2BbhEeht8277c7vIeDpSZQ.
{"copyright_id":"0x6648a6cbc0e4d41c4d4a112409e9b0ed512c5a4c94c42bc61f6236f8233a037e","isrc":"USSM17200353","name":"Introductory Remarks (Bonus Track)","registered_at":"2026-06-19T13:32:56Z","spotify_id":"4R5nfyCt4rX9KrbjqSx12i","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6648a6cbc0e4d41c4d4a112409e9b0ed512c5a4c94c42bc61f6236f8233a037e. 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/4R5nfyCt4rX9KrbjqSx12i.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/4R5nfyCt4rX9KrbjqSx12i.
{"copyright_id":"0xbf046d3337c796dcfda98c2228c04b326a6749c279e80d59e2ea7e1aefb2e6c3","isrc":"USSM17200354","name":"Apples (Bonus Track)","registered_at":"2026-06-20T00:34:31Z","spotify_id":"6qUB6Xikhi9A3gkwHsVfC3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf046d3337c796dcfda98c2228c04b326a6749c279e80d59e2ea7e1aefb2e6c3. 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/6qUB6Xikhi9A3gkwHsVfC3.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/6qUB6Xikhi9A3gkwHsVfC3.
Introductory Remarks / We Got Annie (Bonus Track)
{"copyright_id":"0x2cb09b940bd2e8913cced43c8f6111afadf3dfff9fac5f1d06db15068d60ac77","isrc":"USSM17200355","name":"Introductory Remarks / We Got Annie (Bonus Track)","registered_at":"2026-06-20T10:02:05Z","spotify_id":"3fbzR2UvJ3YMot0EYE8nBy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb09b940bd2e8913cced43c8f6111afadf3dfff9fac5f1d06db15068d60ac77. 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/3fbzR2UvJ3YMot0EYE8nBy.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/3fbzR2UvJ3YMot0EYE8nBy.
{"copyright_id":"0x9b01e888ec14dfb9537322364d273af80e49d4e55621049eb7865a96dfdab9f1","isrc":"USSM17200356","name":"Introductory Remarks (Bonus Track)","registered_at":"2026-06-23T09:46:54Z","spotify_id":"6ssFTqk58zGNX8gGr0iF0a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b01e888ec14dfb9537322364d273af80e49d4e55621049eb7865a96dfdab9f1. 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/6ssFTqk58zGNX8gGr0iF0a.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/6ssFTqk58zGNX8gGr0iF0a.