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 0x17d9e04286554648fb0e5958668838810d1b0edae7180fdaec46a190d124c90b. 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/00056cc8-788d-4820-8f90-a6c32db73233.json and https://artists.proofprofile.net/proofs/artist/00056cc8-788d-4820-8f90-a6c32db73233.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 0x433d91fe5e5cc8cb35e9f695ee71782caf0357ce7032c0135f60a556347ba791. 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/2L0Rir3jfe18FLKtRfWc5j.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/2L0Rir3jfe18FLKtRfWc5j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96441956f037563d63741d784297fcc6cda31e3393d0582164d063ccdc137c44. 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/3GMuNH0cmfwzmetz6INwpr.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/3GMuNH0cmfwzmetz6INwpr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed98114c56dbc8f8b672d07008102baa9ff8b7f398c3937b92897272307d7031. 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/4ZQDASzSjABDZkyQbT5dqD.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/4ZQDASzSjABDZkyQbT5dqD.
{"copyright_id":"0xaa23a6dd33fbd0e1e7783cc32d63d30c32c8dfc2973f4465da556a67c770d2ac","isrc":"NOQWV2201120","name":"Høl i potta","registered_at":"2026-06-05T13:38:09Z","spotify_id":"1fl1aY5bCIv0cin4a2YadF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa23a6dd33fbd0e1e7783cc32d63d30c32c8dfc2973f4465da556a67c770d2ac. 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/1fl1aY5bCIv0cin4a2YadF.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/1fl1aY5bCIv0cin4a2YadF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8636a1b0605bf802bc2e2cc13503aa39491fb0fd455baed462036a70314e24b1. 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/6lM28gehLkRT4XzZ3yfujx.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/6lM28gehLkRT4XzZ3yfujx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21b2906bb5065a5c1f5df47ce79b9a9f9342a02494b45c84ea2661965480d8. 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/4WIFEa8LpOBeUAXgXpB2pn.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/4WIFEa8LpOBeUAXgXpB2pn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924381d095e7f89184c066c5f0b808c51f2d9bbb39355bc64b26a74845d15a1a. 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/32mEBJGQwXbHV1T0ZfTgxN.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/32mEBJGQwXbHV1T0ZfTgxN.
{"copyright_id":"0xcb73052737a33b5f05dd63ed5f27c91abacbc90f15a57e19a53aa010f2285852","isrc":"NOHLX1970070","name":"Positive Vibes","registered_at":"2026-06-27T19:03:43Z","spotify_id":"1GnzcV51yx9NBSazcjBB7R","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb73052737a33b5f05dd63ed5f27c91abacbc90f15a57e19a53aa010f2285852. 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/1GnzcV51yx9NBSazcjBB7R.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/1GnzcV51yx9NBSazcjBB7R.
{"copyright_id":"0x56d88941f46fc4b6ddd27f0a1b9e5aca5f2e2704f93213d4805d9ebca9b0c482","isrc":"NOAJR1900032","name":"Ta det rolig (feat. Morgan Sulele)","registered_at":"2026-06-18T19:53:33Z","spotify_id":"1JOcbyI2IHnTv4AHnfJrFV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d88941f46fc4b6ddd27f0a1b9e5aca5f2e2704f93213d4805d9ebca9b0c482. 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/1JOcbyI2IHnTv4AHnfJrFV.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/1JOcbyI2IHnTv4AHnfJrFV.
{"copyright_id":"0x997d3a56155a3e0b8b3667ca2ff8d04701a2f6aae58f1abbc2ca1e7933eed810","isrc":"NOHLX1985010","name":"Cash kommer inn","registered_at":"2026-06-09T10:02:57Z","spotify_id":"5qjEtwOTaqJqVxQ7DGxbSN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997d3a56155a3e0b8b3667ca2ff8d04701a2f6aae58f1abbc2ca1e7933eed810. 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/5qjEtwOTaqJqVxQ7DGxbSN.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/5qjEtwOTaqJqVxQ7DGxbSN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbdeb614453a33ef52aa606fb8360312c42e27b0615a878665002a4b4ecc2be. 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/6YwTMfYtfgYAkOQU6qv18c.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/6YwTMfYtfgYAkOQU6qv18c.
{"copyright_id":"0xe103a8c8f2b4454e828fddb974c1319ef8c06fbbaaecb882efa98e8ef90a126f","isrc":"NOHLX1870020","name":"Hola Mamacita","registered_at":"2026-06-07T03:31:48Z","spotify_id":"0aSB7YplLbIXg4PPULao1x","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe103a8c8f2b4454e828fddb974c1319ef8c06fbbaaecb882efa98e8ef90a126f. 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/0aSB7YplLbIXg4PPULao1x.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/0aSB7YplLbIXg4PPULao1x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad03048cf91002f1a165194babef28f546c3b6584e8205b2b727069c1535250. 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/7cuFjRlLA0jstJpZymbEqV.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/7cuFjRlLA0jstJpZymbEqV.
{"copyright_id":"0xb0510da26269ddbacee7b00525227d1e7261d934ce4ccbc5e85b8892b05f9d38","isrc":"NOHLX1754011","name":"Hun gjør meg vill - Remix","registered_at":"2026-06-11T14:03:55Z","spotify_id":"2VV02t4Jd21cfXKj4LvoAg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0510da26269ddbacee7b00525227d1e7261d934ce4ccbc5e85b8892b05f9d38. 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/2VV02t4Jd21cfXKj4LvoAg.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/2VV02t4Jd21cfXKj4LvoAg.
{"copyright_id":"0xaa23a6dd33fbd0e1e7783cc32d63d30c32c8dfc2973f4465da556a67c770d2ac","isrc":"NOQWV2201120","name":"Høl i potta","registered_at":"2026-06-05T13:38:09Z","spotify_id":"6sHboxvPTmOvmawos7f98s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa23a6dd33fbd0e1e7783cc32d63d30c32c8dfc2973f4465da556a67c770d2ac. 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/6sHboxvPTmOvmawos7f98s.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/6sHboxvPTmOvmawos7f98s.