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 0x1ae7aaed87c95b5bdb1a9582f5d985b78d897c8467f3d009836da5cd4c093bfd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db5071fd-fab2-484f-adc8-b268b70b7aa4.json and https://artists.proofprofile.net/proofs/artist/db5071fd-fab2-484f-adc8-b268b70b7aa4.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 0xdc404604ac467ef4d46d49a297c477aadba3aab35926585592a0b5ab0aa78d46. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES92157617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb015b3e782dcce17952292e1450cbc461a5bad2179f43b42061817f8ea1d513d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES92157621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f16469e131d655ea1a200366caa4cfb22589a596d044d0bb948401f423f58f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:19Z), 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/QZES92157599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8168a2bc942730519bd2c5a6d6322cec595d56044ba96aee3ee4081a4119015d. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:02Z), 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/QZHN32179655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139ac7530240a16a1883ce408bb67f93e36bdf5383483298301177846a59877d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWU2120613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26281caffd8a07b9fa9400ffb017119bce264c2d9d10d4b0e29ae99c9fe0259a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWU2125376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee1267649712ab49ab29dc72caab87a629190a014c5838684bf79aa8649ef2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:54Z), 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/TCAFX2176523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854a242881e46bfc7b822e72cbdfeedbe8cca362c6972a8f75d51a4052b5494. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:01Z), 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/TCAFY2145412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806217c0b92721d7c2de9779a65d664489aff96f990818de5ff01731313e5868. 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/QZTAT2180024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4563b403a7688b64d23b3c230682a2e2dd796ef056151095221cef3a5fb85971. 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/QZHN72208017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0733e5e438dd708b7060fbef11199591c71fa652120eae4b2dc0118c02f0302d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAX2247500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee82e157d089fb26e3c0ce98e2eb655137c07149f3cc558ce3a7413fdad6c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ22324852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce97fc10300f78653aceceab2cb6fd36dfc462d5fbdce07d6060bf753654bb2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:57:49Z), 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/QZFZ22324855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe1a048eb68e90483f0304971ce04ba98703634a9a211e23a129fb2f65f470. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFZ22324856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019b069af3d47c9d6527a089d8dbe9a2625fe2db20793c9ba4ba75ab5ea2fd3c. 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/QZFZ22324858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427deebc733fa2f1e4189e8a858cf593ad827ac33167615bb04431571f72c4fe. 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/QZFZ22324859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e466b9c65a0b0839d6cb207e0517c551a9d5e255600a9d0ae9b88b647fe4e12. 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/QZES82362000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9231c2f7aaece90a6a2c0f9f6e440acea6d96755a3bc529824ba6768f11ca1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:47Z), 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/QZES82360090.
All Along The WatchTower (Tribe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5211c8078746e4380813abe74eacee7dfec50c035dffe4e015b9557ef3788be2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN42344322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd63662beaec73da2f9209041f480a529cfb058bfd870f7f0bb48a643c2764. 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/QZK6L2313753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df9521c8c296d90058fc5326dcb5ea0a8a73b5ca83e86cb5621cef782165df6. 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/QZTBC2302599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f9e5f7ca0f390b53a6d77d6f71872edb53ef81b1f46eab0ed9cad441ded5d6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZWFG2398253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4553ce9e44948a284bef38ee7c4e2cbc26e60bbdf7c6b2744dd915bd6ba02e1c. 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/QZDA82400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e9e2b70eedb55e64d81bc38f018383f11efb7bef10d01dce70a7c70634a760. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA82400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e2e885c65e5bdaf145b2d0be37385597ad04813d6bd3e53169a4b163faf21a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA82400316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ff0499336dd8afb990c49ea2f35c9346847959c5e5340763248e84cea16ea1. 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/QZDA82400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2dc66a93a1f065830a57069811f6ad898151e436d5db58c53ac1098889e854. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA82400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b54c7e612ba92ccb731c70e2ad792e3eeba26ea04c940f1b9bd6f680381b2. 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/QZDA82400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411b7e995375987f0fdd2311a835f2148fc0c5539d912cbfa6f76c061dcd5598. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:01Z), 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/QZDA82400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf341ab00d41ab50fe4ff0db06950e6688cdf8dd074cd25da13e1f6c5ab17d844. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNMX2444121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061566315414c8570440bce28854e5b39df78064c72f95bc738ad0c6322c3fab. 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/QZNMX2444125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eeede045cdb237c294ea9b693c87c2ccb0554447bd042bf8baabb61f7197f1. 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/QZNMY2482430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df480b07eff10f5500d5a5a3f2bebdaabaa88c36bbe1ea5472116055cd2c33f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZNMZ2414880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54dbe9225744bbfb2bd44f1f55509af54257debf626f182d6447b2826aea3e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZJG52529948.