XXX may refer to: Arts and entertainment Film and television XXX (film series), American action film series XXX (2002 film), an action film starring Vin Diesel XXX: State of the Union, 2005 XXX:
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1bc84d1c9147d98f2313fce959357bc9fcc5525c571c1dd5b8a1eabd49c45a. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43fcd974-da1a-4d88-926a-5d369824ef71.json and https://artists.proofprofile.net/proofs/artist/43fcd974-da1a-4d88-926a-5d369824ef71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e3fa62b88f4f7c26ed803adf4a46f8131b1b9ecdd5bc297edf4c30e349ea8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504aff1c46d3c321875258e446b88ed483817f56704d59eee59e2e5ea63395df. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cc9a5f426ac2fb10faacd293b06109bcc15a99db0fb08fd51a5ded93a5ba42. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8c496d441ff6dafec01dc1b803ff80af3d3644f048b371a72ff6439717c0c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4243d095388e9f42a6f6d00713d009564f0b0b3b1109ecf6168a8318e49a0f2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead0a0154ee5c691c3e8f9503e10fe18aedcaff930bc596ed750aa1460084a1d. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b6fc6a305865ece70203acd3914610b8ee54eacfbcffd7882978dd2b353f2d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbaace62727f9505b0ef3a06b947b06b6ad562996e515282ee4cb83bb62eab3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDNB0545319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217eb8f7b8934508187a3803558abb602d3c54b1b0604dad6d64fb941a3f3fec. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX6V2301096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707ed4ff8d4e120ad98747bd246216a667b9c36a6b59c50d97fe59f35a5c6884. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX6V2301097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cfe29cc12d107a8296e510759cd328daefc325a662673a0e7c7caf42c04732. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX6V2301098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa1dcdba91781e5814fb8c3d40bf96394031f0f7b2c099a31ddee14e80ec965. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX6V2301099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7952cb292da408680e67b3b02c579fde76d9ef0e41dc4911032fcaccfa10bf07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZX6V2301101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e2a478d57dc9a4dd2333e8253b394fb14bd04bd4721ec7b955023a49a36814. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ae3755170d0da65338a48a7423581d3c1c5fdcac5d87538bf6d602417bf50. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7245a79d960f2528f493d97b3195e44d68588eb72ae723f97c65331014bee5f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1dfa9a68dfbfbb2e3937129045eac748a211c8f1d8ec1cfc60658b192e4b9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e316bdd9e7398139e5c474f1ddd815cf870828fddb9ad4d60a57056210ef501. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265ffe1db2a8f7a188c1574f3f0b0eed1e9232ef904ea3017472f6c058762891. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e54cb7c0a96871c7f40401f2d4e42ef1c4a1c3d54a9f3e73a0d8f1b6ad610c2. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2189998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b1a24180b35006fd2b6cd2fca02a8f546acf62f616c4bf3d0f8e99e5f5ac9f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2190001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65828c61d618ea44e890ced14bca70c07b561a4055124c03b1d3ed64630120d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c87a2825fb7b6a65eb508e1a3d860de590697848fbbd7c00d6dbed69caf1a3e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1287e7dc3c418f587acafee5bf1016d9a86721a5507379559476274ba014538d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b5e6c795a82e3c721f21a03c29bfa48ca5743d31e81efc789b1586b00ff8af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fa685d1ab48e77fa871af11d73b85078692d7ab989f495c17bebde5645e4fc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763754d71ecce5383ef2574ecda6735df041539890f4fd22f2e75ae01d3cacdf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fca0be6c482b0211cbcac404c75d0170a517b4d14948eb9ef685ca7cb1525e1. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63657b0b95bf1a07588f6bfe3088fdd14b5152623acfd1737fef41ad51eba8d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB700200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c022cd5efd566f92d11e8a1a4075bc83234a5ade423408b1af50be10a92e3fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11605687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c324e087d0e3e1b3b56879457b982f816b22dcd663a837ebecf9f6f21122bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11605689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe412de4b297dc1c72a8402a906c86d738caf34f65b858aecf86f947e984e8092. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11605691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca39384052a0548fa2afb4619d14a2bcf9b3f2d31b9879cc10f4db45d00d2ba. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11605692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ab0db190d69215cb05601e2943f9c32453df2e810677e968723b855df5427d. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11605693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7ad4470fc0359abcc0aad17ee869b50f2773e347eafc43f4d38c9c2d7dff75. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBLY0606804.
Lynching Party (Let's All Have A Swinging Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cdd3161c0a761cea9afbe39d1585f03145201513fcabc13aeb90eb197053f8. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBLY0606811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e0b8316b0a230bb6ec2bbdc37088a88e212be758d1e29b0057f3a6d96ff2c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBLY0606813.
Private Tech House Selection, Vol. 10 (A Tech House Beat Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8510937cd3d4b14de3e0b85df28837a4e34160858fb3893060e5e755434021. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBULZ1001052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1209797eb2c0d0e8032c0f87196448b36479e55dd7f03a8fc1494b3883ca1db8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USESK1304042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7b0b629659010627c6c908879bb384d7c5f72b2442ee55712a7bb96796502d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAB580666608.
Christmas Lounge and Chill Out XXX (I Love Xmas, the Best Collection of Original Winter Classics)