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 0x0022a0e63740829fcd13fc88daf8cbab82c48ed78a2b9652ef30a9b301d86cf9. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f341dd45-ec89-4f76-ac5a-e03a4bfbc162.json and https://artists.proofprofile.net/proofs/artist/f341dd45-ec89-4f76-ac5a-e03a4bfbc162.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Diesel Power (As Featured In "Call of Duty Modern Warfare II")
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 0xaf8e29f00b55e277b0ff1d990f6b19aa96450d1d6e1d3fcc55f1aa115e9c50da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQ881801003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98cfca2344091d015d3c235081c15a78c886ffac8efcfb31263511a3e28516c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZQ881801004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3375c5189edfb2754e89bb18d21c18dd0d4d8c18f38738e5d71c99084b75cbfe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMREU2032001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae5c20dd4ce9822f588220f80f6b2793cdf7d5aa19867c674ade7894d379ab1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZQ882101268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36154236e2e86da96ba9a172b6956ab82eb3653b09a7609556835f62bca78f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZQ882101269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf60765f80b9fddc240a64638ef2f9674329f985bc5a53e3897001d9143a91f. 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/QZQ882101273.
Drop Zone: Hip Hop and EDM Hybrid Trailers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce8e809494bed8ccf094098d625ce70d963837ba7bd71ca9d9e1b798ac375ec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:37:06Z), 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/QZQ882201403.
Drop Zone 2: Hip Hop and EDM Hybrid Trailers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4351eca59ed4ce3db1b1ea1004dfbfda295da8b56359cd5cab22e1ee5a694abf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQ882303116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220eb76718bbe93a1b2f1dea4145d690bc48102b887ec3e65a11f7dc99717abc. 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/QZQ882303120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ae6ad396ed3659d11d19f68d683e41be724e2f1ed4268c1625a21d2b6faea3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZQ882101969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8a1f8f1f297a8aad2e742cebe27a2f6923087efc461f4b10a87609547c8558. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZQ882100870.
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 0xa5f0067d0f85f526b4b99c1ad787f0ea2e8bf3bdc79e9c46f00391a6cad90476. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZQ882201402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa46279ee8a1ce3c89258428369dceba65f1633f2fda4d74599f36e170a41e36. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZQ882201404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991921cecf1edd400ea899f58033d211d3505b9e55ec87e0821086a654744cb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZQ882303117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b1a1575c69f4c596dd6450f22bb33cd7e5e0593d34687d49dbb854cc9665e0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZQ882303118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39508643d64a03ff86b346b8e9fcff82bb96c5bd7a087de15591a55534b0d245. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZQ882400916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d4d4d97fbfd34457a1abe8599343d7a14bb5f992fe5cd03a4ad408fc20b943. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZQ882400921.