1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcb8b7b99bf9145c125691c541cd1916ac581549b491db6dcdc0d89faf14ddbff. 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/4756dff7-d09d-44d0-adaa-813184d30a37.json and https://artists.proofprofile.net/proofs/artist/4756dff7-d09d-44d0-adaa-813184d30a37.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 → block OTSBitcoinBlock must exist at that height 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 0x6c0ee21dd48148efa9b8fb5f0be0eeb252af6ff5d6f6621b877e1627c2e8edd6. 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/USDW60610007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c8c8d9389ff074ad1938acc758b223f4997829b6ffd0462765bff799f9a12e. 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/USDW60610008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad75057e160f6919838272b23574692426f7967fac4490ffa5d0049d6a209c06. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDW60610010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab540a0751c755de5e036cf27d4506d3b5a226e7da59e1b2ffcd4044dea922. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USDW60610011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ece3ad12f236edb58f94a113e6cdcc73b2fa3e4b2a3ec8ae241edd1bd404d. 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/USDW60610012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311ccf65e9a142534d5d8d2331ae31f02484e03fb737b5562082af5dbddf9767. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USDW60610013.
Boiling Breakfast Early: A Demo Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccc2ed14f7919fda6d1493795b46cb3938a9260c93109cab0755c76817fad88. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USDW60810009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad5e8ddbd8f740a33caf53bef4544013ad3ef1ead9bb725e9344aff0993123. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:44:45Z), 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/USDW60810011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83611f60dca2ea0602672849a2c8849c44e94bf776e9262c3be71d1cb2916e85. 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/USDW60810012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7efb800559c0803306ce00d7cc175bfcf68c6b285173397f3f50bb22cfd0c8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDW60810013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6647c03d0034d9a12c5af724371a8980be627ef05c04cf4530922ef86ab6c595. 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/USDW61100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb293abd4f2ba319a4c60c3e11a3990886cb9363d8d190d588e26d2c732fee4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USDW61100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce0e68bb9f245d30711aded76837d99bfc321a5255bcdc1568dab5da8494676. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDW61100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6406a1285eeb93980fe32757c104544a72028461b9e0cd46dbe684c7f3ef39. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDW61100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7a3576fb8dc5ddd287e2d61620b8419f1230707b751d1d1a47e2b68c9959c3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDW61100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe668226d5160148f0b03409a087014fcea75a364b5039bb3a89e049492cd9338. 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/USDW61100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7778cd3e4544b4afd0219241dc1d4df22adbbd082c40c00d6fc293c259a37b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USDW61100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3087615d0c52d3248f50d4e791b82ec68b9294bd05369404679672cb9697f3ff. 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/USDW61200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ee293aea333d5b5d5d8f0145b748a4890a5b25cf90ca127b6b455db711ad4b. 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/USV351409608.
Art Of The Underground Single Series Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2c8690daf91c2b0478a27161443e0197cee7cd3f34a6e6ee98eb67b60d9a6b. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBSMU1840856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d216317b0101cb2af277a94919e52757878a0248a7579344b623ea876b6c9e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US2B21510056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a3ff433986e0f3d86406895dd9cfda3a5b6db4e31ec5096c75a7678302cb08. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US2B21510057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c8a0b0e1abeca7e0e58d39fc4239095e85841c5426bd8e241669b90e04a4ed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US2B21510058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2418772096e23ebf0fcc126e5d3be8b8a27b5e8f097d7347ea5d476ede2e666. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:24Z), 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/US2B21510061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e2330949612546225a3350cfea27dd3d1fd138daa8f2c428ab7ef2eee1d06. 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/US2B21510063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa864e45d19d4c0d30d9f9d278c71871321200fce71848016882513571a9ea872. 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/QMDA61525902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a319f4721be7cdcc4d4afc03fa8e9239a827f3a6a3da699776d3c0e403821a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:04Z), 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/QMDA61525904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfefa45870e91f56cf769e56bf25a9f6a4f993e312bd6282c1dda189db61302. 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/QMDA61525906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aa0c0a6e43b0fa309d13193bfd07d06b7879a3f9a11a3935670a1633c733cc. 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/QMDA61525908.