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 0x339546e2c7b57337f1ec8595feb698a16f093e44bad9f2bd0b45766a822b5c11. 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/670243fc-8b79-41f0-a6cb-af28c7ad32a1.json and https://artists.proofprofile.net/proofs/artist/670243fc-8b79-41f0-a6cb-af28c7ad32a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x2f01ce682956b0b91030f27c6a6a05b4088fe3420217e31e8277ef6d31d407c7. 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/6ddG1bOyPpQx3dtllgTEk7.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/6ddG1bOyPpQx3dtllgTEk7.
Giornata di settembre - Orchestral version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fa6ffa6872094330c0833a292c69a3bcf88f9893bd61fc0f87c68e80a688ce. 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/4Kx7N7sHcJ0MamSpuDKfV5.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/4Kx7N7sHcJ0MamSpuDKfV5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596319ea20c432af03d454230cf8b95d5070e5bb5f3b08d9efe6071e98719e96. 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/2Z4lASMxAxr7kaplVCiVS4.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/2Z4lASMxAxr7kaplVCiVS4.
As Deep as I Can (Little Sweet Teardrops)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb914227cc2a2b4599fb639e7fc5aa983564284690396a6a1513bcca92afb2b. 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/1T56MdKfXFXU30Cc5dl0K7.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/1T56MdKfXFXU30Cc5dl0K7.
Scary, Suspence, Exciting...Cinematic Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3a9853cf606ffd8a29dfd893ae7c0a56db1c8d3ba743ff64b8385736242eb2. 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/6WHHn6lhA4I0pcx6BTmlTk.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/6WHHn6lhA4I0pcx6BTmlTk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3559a558e0ea96e2889d2dce7f38303da0b74f3a81158c4fa72d642f4e39ad3f. 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/1mjkrZzUIp5p7qKYJzJ0E9.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/1mjkrZzUIp5p7qKYJzJ0E9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f1993ca401f51be802ef47eef8619e72691695dc4de84c5d6a899304b1a85e. 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/4fAU1fXZb5ajxF6WEBhB3n.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/4fAU1fXZb5ajxF6WEBhB3n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd25401040ff68f0c6de309ed1d0f69f9e68005556bf5a5729181b0a22a3b0c9. 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/4Gerf3Y1iDyxU9eYLk0kWR.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/4Gerf3Y1iDyxU9eYLk0kWR.
{"copyright_id":"0x19a6bb1fc32c86bddf6b14f588716046cbba756c81987e24b0007dd105a57b68","isrc":"ITCX32200011","name":"Home Celtic Home - Piano Version","registered_at":"2026-06-20T12:54:05Z","spotify_id":"1TlgpTinXoWxlORev1N7GF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a6bb1fc32c86bddf6b14f588716046cbba756c81987e24b0007dd105a57b68. 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/1TlgpTinXoWxlORev1N7GF.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/1TlgpTinXoWxlORev1N7GF.
{"copyright_id":"0xacbcdb59e4eba3bfaef24934018108fafe3d342e91336d537ba348c5e3b882aa","isrc":"ITCX32200009","name":"Sweet Kitten's Lullaby","registered_at":"2026-06-26T01:13:51Z","spotify_id":"25xONfZ7vNBQQOpkLrJUxL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbcdb59e4eba3bfaef24934018108fafe3d342e91336d537ba348c5e3b882aa. 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/25xONfZ7vNBQQOpkLrJUxL.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/25xONfZ7vNBQQOpkLrJUxL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6403053a419b12c547f1c355ea097a30a624f1982d027de7cc59ef7c0ef65275. 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/3o7DTZvrymJnGR0A5Wb228.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/3o7DTZvrymJnGR0A5Wb228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a552774238b2f008c9c0d89fff215b2dda546848eee42e3b227a717cc27ed. 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/1j3GejNXmsHcEPVuWE1T0M.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/1j3GejNXmsHcEPVuWE1T0M.
Christmas Calling (Jolly Jones) [Piano Cover]
Christmas Calling (Jolly Jones) - Piano Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e9e5de14f5653d340c19b5f0fc455a40dce28e25506e584bc3c3988db70265. 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/7BD0NiEsUzMIat0313oFnS.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/7BD0NiEsUzMIat0313oFnS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf59d9536672f978162f73fd097ceaf912d6cf961c72ba5dd2350e72339b0722. 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/4neJB0nY4lm69BWW0eWAei.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/4neJB0nY4lm69BWW0eWAei.
{"copyright_id":"0xdb4b2950c2f83b95c888f06adc5db34b5bda6a1fd93ae1364b93de068f68a26d","isrc":"ITCX32100002","name":"The great oak","registered_at":"2026-06-24T22:46:18Z","spotify_id":"6qY8Azeixgz7riJCIqPfhp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4b2950c2f83b95c888f06adc5db34b5bda6a1fd93ae1364b93de068f68a26d. 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/6qY8Azeixgz7riJCIqPfhp.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/6qY8Azeixgz7riJCIqPfhp.
{"copyright_id":"0xa5b5adacff9ee381d3cb5a57e72e3673ef59ab4159a2f41275cb949abceba126","isrc":"ITCX32100003","name":"The great oak - Piano version","registered_at":"2026-06-09T21:09:33Z","spotify_id":"7KGnElr5XPfvKSU9PXZOVB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b5adacff9ee381d3cb5a57e72e3673ef59ab4159a2f41275cb949abceba126. 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/7KGnElr5XPfvKSU9PXZOVB.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/7KGnElr5XPfvKSU9PXZOVB.
{"copyright_id":"0xe41a7221e6343cfaa5a7618c95a0f7af63ca00099ff72fb269e9f0d8f991dfe5","isrc":"ITCX32100001","name":"Yellow - Piano Cover","registered_at":"2026-06-27T17:34:07Z","spotify_id":"7hZaTBFgZQpttUoF8d82OR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41a7221e6343cfaa5a7618c95a0f7af63ca00099ff72fb269e9f0d8f991dfe5. 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/7hZaTBFgZQpttUoF8d82OR.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/7hZaTBFgZQpttUoF8d82OR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9b59d3c1799f5566f3ed3d287484219d64e59b60dbce29648ce9be31cd073e. 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/61VdlB510gOHvDsCidsaDS.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/61VdlB510gOHvDsCidsaDS.