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 0x733afb4142d839000c84cfb9bb8673aa7ad3a240913a07c28eeb04967f2ab639. 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/95d6bcac-6418-4b75-872e-36424f9886a3.json and https://artists.proofprofile.net/proofs/artist/95d6bcac-6418-4b75-872e-36424f9886a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x48c40f4ceab811185efbfcbdc363c756a9e7ee73bd8a529e82a972d3b2373519","isrc":"ARF412000213","name":"Last Friday Night (T.G.I.F.)","registered_at":"2026-06-04T07:15:35Z","spotify_id":"6auWMxgWWn4BYFyYwTq4ih","type":"track"}
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 0x48c40f4ceab811185efbfcbdc363c756a9e7ee73bd8a529e82a972d3b2373519. 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/6auWMxgWWn4BYFyYwTq4ih.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/6auWMxgWWn4BYFyYwTq4ih.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f3a7e1b5f04150b3be4b3b90751213ef4ec3b70e5711f642335a85d224d4e6. 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/79vtKJ5EalbFTMsdIYMpqq.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/79vtKJ5EalbFTMsdIYMpqq.
{"copyright_id":"0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495","isrc":"ARF410600421","name":"November Rain","registered_at":"2026-06-05T17:33:52Z","spotify_id":"7GN7JgAlC8NECrbFa3c7Iy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495. 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/7GN7JgAlC8NECrbFa3c7Iy.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/7GN7JgAlC8NECrbFa3c7Iy.
{"copyright_id":"0xaaf1b443506cdff0180b5e1be8373635c9cffd78d333dfebc361a9484d333551","isrc":"ARF412300345","name":"The Rhythm of the Night - Ronan Remix","registered_at":"2026-06-06T18:24:21Z","spotify_id":"2asxqo6EW5rTOiHYka70dX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf1b443506cdff0180b5e1be8373635c9cffd78d333dfebc361a9484d333551. 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/2asxqo6EW5rTOiHYka70dX.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/2asxqo6EW5rTOiHYka70dX.
{"copyright_id":"0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495","isrc":"ARF410600421","name":"November Rain","registered_at":"2026-06-05T17:33:52Z","spotify_id":"77CnXU4HGxTP2IMRWyJJAk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495. 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/77CnXU4HGxTP2IMRWyJJAk.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/77CnXU4HGxTP2IMRWyJJAk.
{"copyright_id":"0x05f8b7de5ce34f9b112abbe410ac2fd82a825d81120abeecb67b745d3abaa5a2","isrc":"ARF411300339","name":"Right Now","registered_at":"2026-06-06T11:09:33Z","spotify_id":"2EW5bJjwakN8kaJnL3U5gr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8b7de5ce34f9b112abbe410ac2fd82a825d81120abeecb67b745d3abaa5a2. 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/2EW5bJjwakN8kaJnL3U5gr.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/2EW5bJjwakN8kaJnL3U5gr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f43c7476b49b78a7b048bb8241399eec9cf41f2322fe6b40328b59f38ccfdb. 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/02hAUqyY7pDkAyWlGFBqBq.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/02hAUqyY7pDkAyWlGFBqBq.
{"copyright_id":"0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495","isrc":"ARF410600421","name":"November Rain","registered_at":"2026-06-05T17:33:52Z","spotify_id":"4eCUjQ7RoqNEU2X1supEgk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495. 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/4eCUjQ7RoqNEU2X1supEgk.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/4eCUjQ7RoqNEU2X1supEgk.
{"copyright_id":"0xafa5911f973d7bf49c0402f9f2ecb88237669c01de72c0f12bcc38633615bd52","isrc":"ARF411600313","name":"Remember the Time","registered_at":"2026-06-05T17:35:17Z","spotify_id":"0P6fuwsMwCtBxXqAtjJUtt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa5911f973d7bf49c0402f9f2ecb88237669c01de72c0f12bcc38633615bd52. 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/0P6fuwsMwCtBxXqAtjJUtt.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/0P6fuwsMwCtBxXqAtjJUtt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6014125a2439f024d19119792762fea3720ab078cd454c72b3b227788d3e79d5. 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/0WzY04kqwPUmB3UkTPIzJV.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/0WzY04kqwPUmB3UkTPIzJV.
{"copyright_id":"0x8b473ffc78d1ce7bbf5df04f2a4d3084ebc7c52e5aa14b5ec82583fe3bfc02ea","isrc":"ARF410801157","name":"Show Me the Way","registered_at":"2026-06-07T14:30:35Z","spotify_id":"5u8mh6CMLFtZhA8zgDASjP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b473ffc78d1ce7bbf5df04f2a4d3084ebc7c52e5aa14b5ec82583fe3bfc02ea. 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/5u8mh6CMLFtZhA8zgDASjP.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/5u8mh6CMLFtZhA8zgDASjP.
{"copyright_id":"0xa867b5c5867be250fa4ad25a07788a5f4d152344e1bfc1bd63202bbadb7baedc","isrc":"ARF411500267","name":"Unfinished Sympathy","registered_at":"2026-06-08T13:19:47Z","spotify_id":"492GMl4wHDFGeorr1LYTfB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa867b5c5867be250fa4ad25a07788a5f4d152344e1bfc1bd63202bbadb7baedc. 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/492GMl4wHDFGeorr1LYTfB.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/492GMl4wHDFGeorr1LYTfB.
{"copyright_id":"0x6ddc16a84af88d0ad29d79097454953d8f1bcc6b8c4f470125b76ba34718ee63","isrc":"ARF412000045","name":"The Rhythm of the Night","registered_at":"2026-06-09T16:37:59Z","spotify_id":"2i28hv9ClaXljIexJy1Kzc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc16a84af88d0ad29d79097454953d8f1bcc6b8c4f470125b76ba34718ee63. 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/2i28hv9ClaXljIexJy1Kzc.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/2i28hv9ClaXljIexJy1Kzc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6014125a2439f024d19119792762fea3720ab078cd454c72b3b227788d3e79d5. 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/1NTN57GQL2W44p0f7qGY45.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/1NTN57GQL2W44p0f7qGY45.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
{"copyright_id":"0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495","isrc":"ARF410600421","name":"November Rain","registered_at":"2026-06-05T17:33:52Z","spotify_id":"5Z2NZCCGgF1M8akCcWeCKl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd84fc81645111d0f3ce2e645c5728eaedcf5ddfb635ad6098300ade889495. 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/5Z2NZCCGgF1M8akCcWeCKl.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/5Z2NZCCGgF1M8akCcWeCKl.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9cc091855f63a3916b2623cb99eefc906525df3218d474bca142898b6070f4. 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/7nvlZinKiCUmLjDX37YJ1n.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/7nvlZinKiCUmLjDX37YJ1n.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96c5530952a7bcccb8aa12c0fe702cad651070dddcae8a18045c70f42d3768f. 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/6JEsEs42fe7pfjqziKogGP.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/6JEsEs42fe7pfjqziKogGP.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d04c3c3f4e6a3baaea190c61b0e850f02cd208309a0e8ca3e1405e484fdda0. 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/7HoYXDzSeQq6DIm19p8kYV.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/7HoYXDzSeQq6DIm19p8kYV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6014125a2439f024d19119792762fea3720ab078cd454c72b3b227788d3e79d5. 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/6x6OhGSmYqjfoUBkbpiciy.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/6x6OhGSmYqjfoUBkbpiciy.
{"copyright_id":"0xa867b5c5867be250fa4ad25a07788a5f4d152344e1bfc1bd63202bbadb7baedc","isrc":"ARF411500267","name":"Unfinished Sympathy","registered_at":"2026-06-08T13:19:47Z","spotify_id":"5Gfx5kJAVCIQ8NksgT70Lv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa867b5c5867be250fa4ad25a07788a5f4d152344e1bfc1bd63202bbadb7baedc. 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/5Gfx5kJAVCIQ8NksgT70Lv.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/5Gfx5kJAVCIQ8NksgT70Lv.