1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x0b8018db7792e844dde027295876c4c2b09fdfec958d7538baa9028efdc9fe56. 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/6659f7ad-b3cb-4097-8d29-afa61e0844ba.json and https://artists.proofprofile.net/proofs/artist/6659f7ad-b3cb-4097-8d29-afa61e0844ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c9b40404470450df7e74450f7af00e21da0b8c705640cd293e51be8c4c1e22. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D1969561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ca747efcd73e36dda3be14087c872cad1a48fe0fb5a2ba3d438a94a0659dd2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D1969185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b68eb1f663704166ca8c745ed7094ddc49ca95e1886c7c35a1f0abccfa3a4a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2046913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5efe9785270d12c8b3594989e2af258af6a18e7656debeb23d519e3445d2d4a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ31975531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26080906a6c830fec38d8069d7e5a08b6a1ebc30383654ac1384a59349c05b4a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42047351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff51dd51b1fe2b22b5dc7b3e2363d44e7f0f4c160f7cfa4822b0c1d41dc158bf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72055934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504abfc67841dda22ce35f1064f5c0ded88bbeb517aa18f07d78ef93bb6fae5f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K2060794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47d73786125a9da87f65abf1ed372a28ebfdf98bd4a9fb75001db6c7e78b0f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1966683.
Beyond The Clouds (Almost Vanished Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e6ca6d9435a9edf07c86e52aa92a38d3b4cd8aa2234dfd131c7134171a761e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1972034.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d4c948d17a43bb6cee030003544850d82bff1ec22b37e5db341edd05608594. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1921470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff486dbeeb6be347f2f30abc5c2e9a2914cf549b58fec3a6528c39c42ef554c1. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1986286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d763bc00124d7ce323ba676f9a87322bd33f7831bc84078dc2230f43497cc13. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1913550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c0980bb471b3f445b28730d9becafb23a38bf6b0edcae1b040aa7b3d8c6cf4. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1932900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da70d8f14efdfecccf9d70c9393b150446c4144f544e5522c58f1366710b4b6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2024934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab74c97fb0384a0f8f47a7f2ba8108d0de92a612f40a2287f7254c68b2fd1aab. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2159111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb52ac5527abb8a880e88fc81917c99e1d863f6d4d3a11dec3de42a95d4b53ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632155827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530c560f16ace5940906a8231e9746d4236cbdb9f3c3b05efa377ee0f76555f8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS662459926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0211bff72047f0275d8c849848642d325a8b068cacea2f5a60a28978e910c6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0Q2487070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131a8b33dc35f7f4055c1283d98738cd993535b41071779a3c5759979f14b671. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0S2404774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85c4d6df484339243e7d31bd435536f30eac2a3349332c212e7a4fb9482ea2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2458987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52980b2ccd6e38c18a4f73dea7bad9c8b46f4a59efe9dffc9e23bd7dbfa9a4b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2458988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fe9c9ac40851186e4733c3bc189837c35fa64f93e06d48f4efc2bb77ce9f99. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2458989.