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 0x0f962fefd0d9a3035c524af0202e2975f134349ca03d6f8e75224231eae0efd1. 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/0617db0e-09b2-490c-a57a-6e3dc9da99ec.json and https://artists.proofprofile.net/proofs/artist/0617db0e-09b2-490c-a57a-6e3dc9da99ec.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 0xaa4d61526ae4987a1010b9eafb3451be1462b0f8ff556a953540cf9bf968676b. 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/31aRV5rb10gk4bw02WEV3s.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/31aRV5rb10gk4bw02WEV3s.
Vintage Café Vol. 3 - Lounge & Jazz Blends
{"copyright_id":"0x24102bac48ab8193c72ee3c51fdb3050be68b73712fc97454dcffa092371cdcc","isrc":"ARF411000494","name":"Don't Look Back in Anger","registered_at":"2026-06-05T22:51:34Z","spotify_id":"34PnEon7i7PEuivK0hV6w2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24102bac48ab8193c72ee3c51fdb3050be68b73712fc97454dcffa092371cdcc. 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/34PnEon7i7PEuivK0hV6w2.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/34PnEon7i7PEuivK0hV6w2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586418029b53b1ca45b79a76884c723430031f52ae39f3c3fd27c9292397658. 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/2bpmyQaUUImHR9UqZXhk9a.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/2bpmyQaUUImHR9UqZXhk9a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586418029b53b1ca45b79a76884c723430031f52ae39f3c3fd27c9292397658. 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/5d1NBnf3qRLsDFjbQm7pFu.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/5d1NBnf3qRLsDFjbQm7pFu.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
{"copyright_id":"0x24102bac48ab8193c72ee3c51fdb3050be68b73712fc97454dcffa092371cdcc","isrc":"ARF411000494","name":"Don't Look Back in Anger","registered_at":"2026-06-05T22:51:34Z","spotify_id":"0uMoOpWCJTJwOBd4j8FS4N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24102bac48ab8193c72ee3c51fdb3050be68b73712fc97454dcffa092371cdcc. 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/0uMoOpWCJTJwOBd4j8FS4N.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/0uMoOpWCJTJwOBd4j8FS4N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a10ed5bf9f1b096f523704403d02c3e534615336c7458f26380bb77b642d40. 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/5TpQfVIKQzYlbPIlqkFqmo.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/5TpQfVIKQzYlbPIlqkFqmo.
{"copyright_id":"0xf90bfccec236895fa3eb4b2a6a6816e5a7224b4800fe8d95ce1ed8a3e19a5dac","isrc":"ARF411900139","name":"Born to Be Yours","registered_at":"2026-06-23T10:44:14Z","spotify_id":"2asnv1ceT2FYfTKXX90e6P","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90bfccec236895fa3eb4b2a6a6816e5a7224b4800fe8d95ce1ed8a3e19a5dac. 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/2asnv1ceT2FYfTKXX90e6P.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/2asnv1ceT2FYfTKXX90e6P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1bf12393a51891a7ae5d5e5076705b5472fb5b51d7f8b9a62a3d625e194959. 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/2d3lZ3BCkDg7deoJ7udB8R.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/2d3lZ3BCkDg7deoJ7udB8R.
{"copyright_id":"0x4584be4fdda6aa8a1fde6d0824ba0a009ed47e75dfe57fd97a260464c4f0965e","isrc":"ARF412300461","name":"What Is Love - G-Spliff Remix","registered_at":"2026-06-23T01:25:02Z","spotify_id":"7m6OWkJiIkhom1oBWLeBej","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4584be4fdda6aa8a1fde6d0824ba0a009ed47e75dfe57fd97a260464c4f0965e. 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/7m6OWkJiIkhom1oBWLeBej.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/7m6OWkJiIkhom1oBWLeBej.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a6bab96d3062163bee840735938f77a5e46416b361408e1415be1b76148ea. 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/6sX61FPiTRi77CU2mM4pEU.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/6sX61FPiTRi77CU2mM4pEU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bacfffb0baf2c542d764728f504933825a9b21c8411e008326c068c65462a1. 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/4vNf5IVQtrwvpI8dfxikEy.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/4vNf5IVQtrwvpI8dfxikEy.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
{"copyright_id":"0x24102bac48ab8193c72ee3c51fdb3050be68b73712fc97454dcffa092371cdcc","isrc":"ARF411000494","name":"Don't Look Back in Anger","registered_at":"2026-06-05T22:51:34Z","spotify_id":"1wmUEYPH76glTo4Vj2zueu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24102bac48ab8193c72ee3c51fdb3050be68b73712fc97454dcffa092371cdcc. 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/1wmUEYPH76glTo4Vj2zueu.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/1wmUEYPH76glTo4Vj2zueu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a10ed5bf9f1b096f523704403d02c3e534615336c7458f26380bb77b642d40. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2bbpDkUS0kIXxnak0qBduX.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/2bbpDkUS0kIXxnak0qBduX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9e33e3303041daa317850aafda1c73abf12c32582830845ec84ca82a4f8b5e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5TUbtRP8r55MrziJDnM1uP.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/5TUbtRP8r55MrziJDnM1uP.
Acoustic Clubbin' - The Complete Sessions
Brazil - The Complete Bossa Nova Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586418029b53b1ca45b79a76884c723430031f52ae39f3c3fd27c9292397658. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/67GC5xcl93Jpx5fwaJ1jJ7.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/67GC5xcl93Jpx5fwaJ1jJ7.