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 0x22f1279c324d6d7ebbadc897caf08c374e6a079606c627c48e522aab69c4813d. 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/355fdf31-71e9-4f10-8914-3f1a6255fd9e.json and https://artists.proofprofile.net/proofs/artist/355fdf31-71e9-4f10-8914-3f1a6255fd9e.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 0x1210955bd9a82f5ee9aaddf4bfb40461c970456a9919e7ddd3aaa593dcbe16a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEC33501508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01df0586d19e71b75ad84620855a69b2633e342a1da308e6cc735dd95791d0d7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZLBC2410763.
Make It Out Alive - The Spider Within: A Spider-Verse Story
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd896ad3dcd26638b1d124502e5d999806271edfb047531dc7c0a2cb46fd9956c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2406831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa27da10e8dc4ca18b35cc3226443611e8f86fe4ebeee3e8f4115c8c6d2ad2dd. 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/QZLBC2402115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdeb8f17594e3e9d225ae25f715bb3485b78666a78911bd3118d085d8aa7b7f. 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/QZLBC2332458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4de2b7f1ff1cb10e48162670650d16324acc91ace3668ab6956ef8650544b46. 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/QZNMT2332854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3090fcdc3dbad8ffe8e22a349ef76e1f663ef39605cc9ce34070516467349efe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUG12205897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde9c21d792c58a2828f267f5f0b25996862f43ac1678b14febf96753039929. 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/USUG12200549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb47945d603ce9189d1d164ff6a5b7b5004baf1b4f9d3a9a666aa262e6c02f. 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/USUG12202238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffab271f9806f24b954c5f4f4dd836db4a431e32e102bddcd720896f68264e2. 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/USUG12105328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc07baf3ecd759fa83127fa7de6633de8165878afb565bc76c59d3ceabe7bf9. 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/USUG12202235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde9c21d792c58a2828f267f5f0b25996862f43ac1678b14febf96753039929. 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/USUG12200549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a93f3cf76376e9da01f89009cb019c20ffac4abf6d3f325095ddcf0096bf555. 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/USUG12200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffab271f9806f24b954c5f4f4dd836db4a431e32e102bddcd720896f68264e2. 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/USUG12105328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d71353d85804991f518cc7539e8ff4b7669af04a8b102685e3773e8106d923. 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/USUG12102551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75182405e722576697da12f8f30c133bf9f2af16641a795d2e845cdd6c279a21. 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/QZK6L2048701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ce710f2f1c97d795bd8a861f304fa6fe3b295e3a89f21ca62619f36e5c1361. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12504921.