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 0x72f1f9c8937ccaf4ac88b4330ad61450d9dedc1c18b7701d41033ba583be4e92. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a460ee7-4b1d-4baf-bb2d-6459badd2ca7.json and https://artists.proofprofile.net/proofs/artist/8a460ee7-4b1d-4baf-bb2d-6459badd2ca7.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 0x62f489377ecdf03f513f2e3a1308c8fbf2f5ff1f32d03c988f2a5fa94c4096f0. 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/7e2vwGXXqySWOXeBhalUKC.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/7e2vwGXXqySWOXeBhalUKC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca81226e9f3ff012f7b2755426b8c7a973dac9aed02158fd3b8ac019716afbb5. 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/5yk7fb5MOZGrwOjrJVdmQ4.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/5yk7fb5MOZGrwOjrJVdmQ4.
{"copyright_id":"0x77ada4e81945c245ac9a2bd3b7f1fa450ebf49accc3e0ce87311f53d766b4c96","isrc":"GX4R52319789","name":"Million Words","registered_at":"2026-06-24T03:15:18Z","spotify_id":"1mv0qkVktgYwfR9JZtkJ1g","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ada4e81945c245ac9a2bd3b7f1fa450ebf49accc3e0ce87311f53d766b4c96. 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/1mv0qkVktgYwfR9JZtkJ1g.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/1mv0qkVktgYwfR9JZtkJ1g.
{"copyright_id":"0x385827125291474dffb2ea04fdc22b7333eb71d7e169b521639402b62ee7f3d9","isrc":"DEMA61906844","name":"Can't Get You out of My Head","registered_at":"2026-06-19T18:05:08Z","spotify_id":"7e8pKdyykkdgAFeFeUfiD1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385827125291474dffb2ea04fdc22b7333eb71d7e169b521639402b62ee7f3d9. 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/7e8pKdyykkdgAFeFeUfiD1.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/7e8pKdyykkdgAFeFeUfiD1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ac802848f130aedc7bf4796897331aaabb30a1139a1da4f66cfc6f25597f1. 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/30eH8JRsaof6LoWuxg82go.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/30eH8JRsaof6LoWuxg82go.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a8af4bc465335b043550b12ec0c5b2ec47e40d6d7f1b19c1ab2a29509a6f7. 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/2nS3U5Sl9t1dTKwqpdd6hf.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/2nS3U5Sl9t1dTKwqpdd6hf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43911b19330fc8d139727aa02536ff4d7235f7bc22b443710ab1d0ada4a7c9ff. 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/6zZsILxgVFp2LQvDbwp6X0.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/6zZsILxgVFp2LQvDbwp6X0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a3772debe6234ef106b248f1daa0630ff9a5caeee987a711a52a1f988d6a76. 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/1WZbJ0oi3g5YLBNY44PZnk.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/1WZbJ0oi3g5YLBNY44PZnk.
{"copyright_id":"0x1eea2649524c3f45ca96e8958a11b65138546378cbe7ff59f5d7ed7fa529fe66","isrc":"QZWDW2349163","name":"Under The Influence","registered_at":"2026-06-20T12:51:43Z","spotify_id":"47FKvkqzOp2vrf8QlIxGYl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eea2649524c3f45ca96e8958a11b65138546378cbe7ff59f5d7ed7fa529fe66. 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/47FKvkqzOp2vrf8QlIxGYl.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/47FKvkqzOp2vrf8QlIxGYl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b0a5f1c9ea5143b98e2bf9ebb673e9a6c7a530c50f0cc8141968132b11e015. 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/4XD6gTgaZ9dUKi99U7fslh.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/4XD6gTgaZ9dUKi99U7fslh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a4f1c74a4f4648789fd2bc2034117836c07d2b095ce192613052e7118bfe54. 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/7IkWzjoMuZthr9PoDTHMzw.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/7IkWzjoMuZthr9PoDTHMzw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98d241f0333af12c4a7be17ab3b3221f8c0bb1cd2e2a83499021f5eb4967f2c. 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/03ftj3dV4wNSlHztDRjObF.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/03ftj3dV4wNSlHztDRjObF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b26f4b3ff51f45c585c555b2a544931d48679390841bb0b0b0da7253b59473. 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/1601Dsrma75JogLu2gJbtZ.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/1601Dsrma75JogLu2gJbtZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2145ae24fc6f1314f838340e69a728f670baa66dc651911fc74e6a559d93e35. 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/4y4L4oWGoycQ5Lwz9HB9FM.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/4y4L4oWGoycQ5Lwz9HB9FM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106471ee4554f8066decfd146f834bc1541eb9d928ef695082f3a13243e9c047. 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/5ranLQJRFmiedRgKbiZTMd.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/5ranLQJRFmiedRgKbiZTMd.
Nothing But... The Sound of Future House, Vol. 16