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 0x7dabd804164974e41167ad07aae7f8e599b9ac721a83e2e3c4da6d77ad9bc426. 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/5665f418-dd16-4bed-812d-2d20330ea201.json and https://artists.proofprofile.net/proofs/artist/5665f418-dd16-4bed-812d-2d20330ea201.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 0x624281731a45afbdbea23aa5036b3ee0e31e9f2a5a9e6df2940a5de76cfbab7b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMBZ91951353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe830ad124f492c35f10bb4f07bbe26afbe34e6b76e04bbcb7e1050409183567b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AUBDZ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63676369035b4e9d9003f3a83409f22415ddf3897bf10b264abe3aa3e730fab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:41Z), 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/QMBZ91951356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e999f6ca87060e96936354cb0161b12990d7070a4225ef73e732a4f4a3b0a5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMBZ91951357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfc9fa7f919e0db5413e501725ac7f430b2937e4b63dff0cf1f8cd56d810693. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMBZ91951359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb09e988f17f09a715fc26031033fcd7be47c91d0a8f5666da785bebd2a3912. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBVNV2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df7423cda19fc2f185343525124ff8640fddf52ace7835b59cf9938e5c7f8fc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBVNV2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb02da0399cab3544381cc996ff34fd718376836bd4704d1b71ddc05a3ac7f4. 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/GBVNV2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16c97cc721b5c1db305936b4c171f42a412e7ceb9fb67239269ba4294c75a34. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBVNV2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cc0b3d4afdff67c34bbe08710025c42934d83d28bf3093332d96d62b743718. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:00Z), 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/GBVNV2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d177acfa07ca55844d18708b052f45f888d74848ebe0b4c83d8d9ed516605d9. 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/AUCI12218103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8b049a9d4a205ef9de51a82e9b7ff10d44aa5abadf3bc9694e02522e266f1b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUCI12218105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24140658b9300936f993a512b62f7593e32e6004cf8c5ed43645bb6e52216f8. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/GBVNV2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4146d7d80e46ef98c79665260e58edccc50944d7189310da93566970fad484. 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/GBVNV2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfd746557100b1ded47882902f195d0973f61b94dae761f507c66ea97dd2696. 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/GBVNV2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25390871575fc6288f6adfae1b4a50c34295070ab3f607f1f9a7b7646d343d33. 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/GBVNV2500053.