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 0xe967b5dcdcd4f7730a82acde0e849e5356c5da3b0d2fa05b59a70d4e3eaf9c7b. 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/5f838fe2-aaf1-4b48-a03f-8864f5806a24.json and https://artists.proofprofile.net/proofs/artist/5f838fe2-aaf1-4b48-a03f-8864f5806a24.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 0x33a51b24fb09c9160b1574724a0cfc94b83c19264abbb767efe386b240b6490d. 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/0Zr5TTnvxhGDQj02SGFlip.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/0Zr5TTnvxhGDQj02SGFlip.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffef0fc49013b01f3c8a0db668c54b26dd71c52c5b4ce862e3b1f76670ef69c. 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/7rKiGoTbE1jCKSUbMAHGkd.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/7rKiGoTbE1jCKSUbMAHGkd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f904445238389536842c6624fa23053c0a3f4c3b7de44f05f20de2e220021e1. 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/64yEvBWjY6C23j7o4ZoddC.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/64yEvBWjY6C23j7o4ZoddC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06599b51ba45106de567bd7b0bb263a9919ba6a835ad34196bf627a886dfc09f. 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/0q02P4yUz4BAcmzbGVrCEU.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/0q02P4yUz4BAcmzbGVrCEU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b63577f01ee13b0aca96880cbf85d6919da529ee8b74dafb07418885b420d. 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/4MikaBZFcT32MamSFwJ605.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/4MikaBZFcT32MamSFwJ605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a5dfe95d85d1542a59599046356d6dbfabd0c8a550cdf9c19244d17c07f051. 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/2tOEymOa1WfSNjXbJN3f3i.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/2tOEymOa1WfSNjXbJN3f3i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85626ca25bff7402123861343faf714e10e3ce7dc436b496a329c2cb77954a9. 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/15tzlxIHJKn0axkuhhCvUX.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/15tzlxIHJKn0axkuhhCvUX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdec951dd658eedf3896c89d649f3b746110f6de062f9f46d05aa33048a4e623. 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/3ixdZukTK7y7bccizNfiYt.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/3ixdZukTK7y7bccizNfiYt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd7ed2deea1ca0065b402d1fccef3db12650239534949140a6d66a3594f2d7. 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/4HQrae8SwNjxcLPYg0yvXD.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/4HQrae8SwNjxcLPYg0yvXD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7545384f0c9239983d02422d6b3af6d971edb4974a51af09a4afef617f055ce4. 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/7neWz1IKROvJSTMHp9yOdX.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/7neWz1IKROvJSTMHp9yOdX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c1869609f2ce21d399c4699d2a5938f299b8cf4e626a4947b5dc3f2280a097. 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/42LEMiKOFxXIezRzy4pnk3.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/42LEMiKOFxXIezRzy4pnk3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffef0fc49013b01f3c8a0db668c54b26dd71c52c5b4ce862e3b1f76670ef69c. 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/6WBoHxSRyvMyGIzslzJJ8m.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/6WBoHxSRyvMyGIzslzJJ8m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06599b51ba45106de567bd7b0bb263a9919ba6a835ad34196bf627a886dfc09f. 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/0rAMQYaB0O9hMHTcqMWKYw.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/0rAMQYaB0O9hMHTcqMWKYw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c982c97e777ed8ffa9e1bb658ee47857226d9d91555e5dc42a7ebd5a77e5a44. 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/0sZ4b9dCzwlCw6susRMO39.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/0sZ4b9dCzwlCw6susRMO39.
{"copyright_id":"0xdc6cc1ac61b0c3ce2a4c0b22a2e2c9ab9c3f7e21d497152a1ae85a0394198569","isrc":"JPU901701215","name":"gravityWall (instrumental)","registered_at":"2026-06-23T01:57:26Z","spotify_id":"6QuOtbmkrv5Vq983nRAbY3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6cc1ac61b0c3ce2a4c0b22a2e2c9ab9c3f7e21d497152a1ae85a0394198569. 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/6QuOtbmkrv5Vq983nRAbY3.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/6QuOtbmkrv5Vq983nRAbY3.
{"copyright_id":"0x6a18c78becf72991cf8d13e77946c840ffe83e58549a931d8348a6ed5194a8dd","isrc":"JPU901701216","name":"sh0ut (instrumental)","registered_at":"2026-06-25T07:51:46Z","spotify_id":"2qBuoOIRgPShVRXNUjVHCq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18c78becf72991cf8d13e77946c840ffe83e58549a931d8348a6ed5194a8dd. 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/2qBuoOIRgPShVRXNUjVHCq.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/2qBuoOIRgPShVRXNUjVHCq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85626ca25bff7402123861343faf714e10e3ce7dc436b496a329c2cb77954a9. 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/4ITpWw48NFxt5So5vu5ChZ.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/4ITpWw48NFxt5So5vu5ChZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4138a78b0654e8d23a4b8bb80b4f652af425f68b0c972c7408da24d5472592c. 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/3RPKDIvyzoZMUrXvrDwBRj.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/3RPKDIvyzoZMUrXvrDwBRj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbea756ceb5cff6c2bd91b860fd663cb440be396a0e02019273d62f003708df5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2l9rjttLuk9qSCQD0Jkc82.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/2l9rjttLuk9qSCQD0Jkc82.
BEST OF VOCAL WORKS [nZk] 2 -Side SawanoHiroyuki[nZk]-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61052566c9ef2393f25c5e2ea1e1535c0b40f3cecc6ee94ab801feb8c99d412. 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/0I5DRqq2yOO2QtuG1mH9js.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/0I5DRqq2yOO2QtuG1mH9js.