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 0xbec2511a755606715df3ce4b26e664a335f76d35a4e2688163ed85673addc057. 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/ad9f729d-7934-48d1-9dfc-65d4413635a2.json and https://artists.proofprofile.net/proofs/artist/ad9f729d-7934-48d1-9dfc-65d4413635a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xcb6dfd7052743c7bc12e691904e5878a0a0cc0b194488fe6acfd56ad2b90d1fc","isrc":"AUUM72000417","name":"Diet Sick","registered_at":"2026-06-19T01:24:12Z","spotify_id":"0YWvsVz551MpqvqsbfDRJc","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 0xcb6dfd7052743c7bc12e691904e5878a0a0cc0b194488fe6acfd56ad2b90d1fc. 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/0YWvsVz551MpqvqsbfDRJc.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/0YWvsVz551MpqvqsbfDRJc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220fe679b375a367a4f561b1a3ba384e1d43e0997fed92d2ded9e3947f3cff1c. 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/0xhrqWdHPxeukyOFzwLdlu.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/0xhrqWdHPxeukyOFzwLdlu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7800c88cf20a8f9d8118a0ecb999e8f9e0e6f5218f592422b4fa4227270453. 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/3sBkphRoIfQEgQiUxu1b7v.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/3sBkphRoIfQEgQiUxu1b7v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90485d75cb50723e2a2f1b68f25a3f63e9dc0b9940bbfc80947ffc090e184c3c. 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/6Ua3hwMCkhRYgesV5kC9Rl.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/6Ua3hwMCkhRYgesV5kC9Rl.
{"copyright_id":"0x2af6a6f469e8e657cc7e64d6c67bfba1db644e739ffc4725d20cd08dd1603195","isrc":"AUUM72000420","name":"Don’t Take Me Back","registered_at":"2026-06-23T23:25:15Z","spotify_id":"730ovX7YoL4JMDNvgz1RuZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af6a6f469e8e657cc7e64d6c67bfba1db644e739ffc4725d20cd08dd1603195. 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/730ovX7YoL4JMDNvgz1RuZ.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/730ovX7YoL4JMDNvgz1RuZ.
{"copyright_id":"0xb303446c1f377806db23ed9dcfb46f29d115a12a0f121d31f79d9eafdc75fa06","isrc":"AUUM72000421","name":"Breakfast For Pathetics","registered_at":"2026-06-18T09:17:11Z","spotify_id":"78mSVD6W8iyFk9auAacBhD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb303446c1f377806db23ed9dcfb46f29d115a12a0f121d31f79d9eafdc75fa06. 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/78mSVD6W8iyFk9auAacBhD.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/78mSVD6W8iyFk9auAacBhD.
{"copyright_id":"0xd4c5acc31517ef2fb3728b84813432bbfe1e3efa6ec2353f6879860662de147a","isrc":"AUUM72000422","name":"Drama Club","registered_at":"2026-06-19T21:13:07Z","spotify_id":"5fYnXieInkLEgxdEZ8WeYj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c5acc31517ef2fb3728b84813432bbfe1e3efa6ec2353f6879860662de147a. 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/5fYnXieInkLEgxdEZ8WeYj.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/5fYnXieInkLEgxdEZ8WeYj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d59f3db3b2980a70cc03ccc07698ca1cce2673a8e4c7fb2e5a7730e15f1d562. 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/2mb5tmCj2iNpk3a2yGpTah.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/2mb5tmCj2iNpk3a2yGpTah.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5485976b480c4424b91a96389f52ab99f841e4b542714b0ac2aee9c22255a0. 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/5iQioOmLRD0MKjtnVpZtPv.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/5iQioOmLRD0MKjtnVpZtPv.
{"copyright_id":"0xbafbdfaeced9a3b34e4d00c9679940795ff3e61fbd562fd708f0fa8cc842dba6","isrc":"AUUM72000425","name":"Screw You, Man.","registered_at":"2026-06-23T23:25:09Z","spotify_id":"4QPav2ZD8lE7MWwkdCbUcs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafbdfaeced9a3b34e4d00c9679940795ff3e61fbd562fd708f0fa8cc842dba6. 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/4QPav2ZD8lE7MWwkdCbUcs.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/4QPav2ZD8lE7MWwkdCbUcs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5245698f12a60bf70fb225f768bdcdee10681dfd55fcc4e32322f4f39b824fe8. 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/3yQK8XtNDgyBui9OIbReLo.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/3yQK8XtNDgyBui9OIbReLo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef47e1627626105d682ca66cd1688fe355d3e6351738f0514d6053a215275d5. 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/5C0SmOm28Tn0DSbK3g3UUt.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/5C0SmOm28Tn0DSbK3g3UUt.
{"copyright_id":"0x53edb1c26c1e203f8bdee896315e3f0aacd65ad25ae8544aff2144bf49c9f2aa","isrc":"AUUM71700162","name":"Cinderella Dracula","registered_at":"2026-06-07T23:39:33Z","spotify_id":"5vJx8GRtK8P0MQTUMEwVk6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53edb1c26c1e203f8bdee896315e3f0aacd65ad25ae8544aff2144bf49c9f2aa. 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/5vJx8GRtK8P0MQTUMEwVk6.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/5vJx8GRtK8P0MQTUMEwVk6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0024904ec4fb7e3db126cd8faf4e6a8bf7e4cc1f5aa6ec99865b35ae1fc51a. 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/2siS5KkqpA9mSmnFiQ8WjF.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/2siS5KkqpA9mSmnFiQ8WjF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae80e0bec32eb844667ab0bfa23837ee6f78ec63457e3a478353b81d9c44636. 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/35L49nXqs85DEZ9AuWdTsV.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/35L49nXqs85DEZ9AuWdTsV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aea4e873ffed20977d08ca7f5bef0b85f17a61757444d244300fb6b8712ebb. 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/4elhXAcGfp5AE5HiiSeEOl.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/4elhXAcGfp5AE5HiiSeEOl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf222b9d9ce04dd823c78b83490386218b4c7dbde091f534e09e46cbc3814f3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7HCtfFMl7ciElyl8zMq6wC.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/7HCtfFMl7ciElyl8zMq6wC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87067ac81eedb2837718ca0dd4763cce587b910fcdaa8349337b80fe782f1097. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0l3BAyrBS2eGM8o0Ne6wez.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/0l3BAyrBS2eGM8o0Ne6wez.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17c840b5f89853a937fe8f2b3cf8dd674a57cd7123d6b1ba72dd8a31c0d282. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3e4ztDwLC6qw2fNU7kcFtL.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/3e4ztDwLC6qw2fNU7kcFtL.
{"copyright_id":"0x6ef6d59b00c1107e4f20913ba7c3238eacbb35eade48cfd5a866fb89730c1dce","isrc":"AUUM71700679","name":"I've Been Trying","registered_at":"2026-06-25T03:44:52Z","spotify_id":"69fwRQcfes879TJhZriU6z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef6d59b00c1107e4f20913ba7c3238eacbb35eade48cfd5a866fb89730c1dce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/69fwRQcfes879TJhZriU6z.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/69fwRQcfes879TJhZriU6z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90485d75cb50723e2a2f1b68f25a3f63e9dc0b9940bbfc80947ffc090e184c3c. 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/4DYXeQyYvV3RsgckaQCswD.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/4DYXeQyYvV3RsgckaQCswD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7800c88cf20a8f9d8118a0ecb999e8f9e0e6f5218f592422b4fa4227270453. 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/7658x84n9FdqtSKBUDQCeV.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/7658x84n9FdqtSKBUDQCeV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220fe679b375a367a4f561b1a3ba384e1d43e0997fed92d2ded9e3947f3cff1c. 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/0d83F7I3zEwAEIvjVGIPQz.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/0d83F7I3zEwAEIvjVGIPQz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b1c4c06d5719b44da0458bd773f52cd6fdc2728519ee5770f0870d959b6e02. 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/4aobh4j9xhG08Yb7VkcCzd.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/4aobh4j9xhG08Yb7VkcCzd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfdabdd37ba5454cfb546f339db1ef840cac423dc8200f09f165d5387d5c7de. 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/23YIwE3aDFoPsu4E4esfW1.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/23YIwE3aDFoPsu4E4esfW1.
{"copyright_id":"0x21f48dd7e22966ea493ea2af24b357f19560350f87a46bbc74e64b55bededd40","isrc":"AUUM71600242","name":"Not My Friends","registered_at":"2026-06-21T15:09:28Z","spotify_id":"6JAaFQmJ8wjscrIIbQCZbe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f48dd7e22966ea493ea2af24b357f19560350f87a46bbc74e64b55bededd40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6JAaFQmJ8wjscrIIbQCZbe.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/6JAaFQmJ8wjscrIIbQCZbe.
{"copyright_id":"0x81dc7acfc822773629b1549960e26b742be219d2f60c3f8ea8e27eee46a0a5e6","isrc":"AUMJA1400001","name":"I Don't Think You Like Me","registered_at":"2026-06-20T16:28:45Z","spotify_id":"5gtkuX0ZylixzbRumUawYi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dc7acfc822773629b1549960e26b742be219d2f60c3f8ea8e27eee46a0a5e6. 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/5gtkuX0ZylixzbRumUawYi.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/5gtkuX0ZylixzbRumUawYi.
{"copyright_id":"0x21f48dd7e22966ea493ea2af24b357f19560350f87a46bbc74e64b55bededd40","isrc":"AUUM71600242","name":"Not My Friends","registered_at":"2026-06-21T15:09:28Z","spotify_id":"3cSkBsnIqA7IVlYqUhVA3C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f48dd7e22966ea493ea2af24b357f19560350f87a46bbc74e64b55bededd40. 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/3cSkBsnIqA7IVlYqUhVA3C.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/3cSkBsnIqA7IVlYqUhVA3C.