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 0x8230eafc0a94fbdc97f7d02fe0ee88440e5bf9a2c8d26fd6ac5fe9524bcca1e7. 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/c4e57c37-d21c-49c8-829b-6d207845f2fc.json and https://artists.proofprofile.net/proofs/artist/c4e57c37-d21c-49c8-829b-6d207845f2fc.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 0x42dce32e84e50ca6ad86c1393d9d2ddb4136b1eb42f13b8a36637f4722f0f992. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYX2352081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7dbc4cd53b73e5c33b1ce347f2ee2b3cadf9dc8b472b7957bab2d9505e67b2. 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/QZTAX2355323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6409a309fbe5cf7e8138c3318b6dc6324056f004293645c32749405cd19e33b2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:09:29Z), 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/QZTBC2355962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32949e648d0afcfb5f44cffe8258a1b4664c42e1427d6de85f84137aa25cdbd. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZWFN2355153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f76057421391be5ec9e6e3f4d35ff3fc77d227c3b622e198578bccdb6dbf09. 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/QZHN82420163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dbdd8ef4495a287677acdeff652ba1a86cee8bea99f720d23d2d168a1cb54b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6N2481390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e84cf7156a92eadc44eb729972d6578577e091689170f8446d2dfad4d40b5f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWS2466952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60669b56e1b789ac9c3388b5d2799583b81b13ef163f1ba81b02847730be8ff. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTAU2442918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ad8cf009e65ea09eef429c791bca89effa915346fb1f4a50bc10b2b650d7a5. 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/QZTAU2442919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8845ddef1924b8fc3efb9282e5497300c5fd75d7b888a1c2e9c2f9fb38e4bd19. 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/QZTAU2442920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe2b553e28fa1cddbd7101922193175b6d330032ee5b22b9dde4c71fffe35d5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTAU2442921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf3aa10c8954d5f6a95c8ab5e48b7fc5c2297f8b98ac45874976fb2f2f66825. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAU2442922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723f6f6d9488e893d9795690aad7e4f5e02553585e1eb9070bd5d6c641457025. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAU2442923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc1142756794f6b7c4d596a9871d89ac8298adbf257d51ddee5a3334692de50. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:39Z), 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/QZTAU2442924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacf3c06c8efbfddf06cf8fde290a6b9d8e858a32c20c3b87baa92189b0e95ca. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZTAU2442925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40b286aa9cb81050248944375cfa3415d7c9448cfcb79d7b9d505d9d229e472. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAU2442926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef54c35f38fe293465c9bcd79399e219203c407e2d3fb1932714a2fbee5eb90. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:23:54Z), 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/QZTAU2442927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06b9b3a763612c38f375e8f690d62f57c8b33f8874869f3ecd09a487768dbd9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAU2442928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f77312bcb880c7c768446d81bb9a9b480d0f63821dfe2155a1accad4a9ad2e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTAU2442929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bcd86c88aeebf3db1bc26360454d17f4e539789748e01955f3597f52341547. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAU2442930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde00d215d04a2eb4ea806fd6430261c4cf48251b25d07e2ffd67f8830ad049e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTAU2442931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45250d409a104d39a8103a63488b9458455a9b09eee3c844ffd4e7c63607753a. 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/QZTBB2472464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49c7d562688dc98263f4e66e772548d49bd120f1700071acb7d45bf9e43d9a1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USC4R2449247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9fef97341bf2b140c09d12c4560e18504619ab56b689e6448615c83459ee04. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USC4R2556746.