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 0x4134267f102a5dd553b4c7a67f838db31684e18b21af8911446ddf391528ca66. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53fdbaf9-3322-4ef2-abdb-f8b03e0734a8.json and https://artists.proofprofile.net/proofs/artist/53fdbaf9-3322-4ef2-abdb-f8b03e0734a8.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 0xf6250fb3c1e586e6a96774f999f263494d529d46691cb5a8630b7f235319b0e9. 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/QZMEM2163883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98daa96ee5564dcd5930fb73b7f9f8f523b27835b0e4ce0d4538a8b16c79905f. 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/QZMEM2163887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5990b67badac4cb70a4dfdc801e4a7f39da94daca99e907fcbf41dfc233d3c3e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZMEM2163888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fea545ff62b098cbfc95fe5ddbadcd775806eb48f16a8666853c4b3429e31ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6K2004131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0b420a329d58003f6db8fbb3e026380469b881b4d39f8871354fe3e9d8c98c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMEM2163892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5b3def88ee78fa0171b827d34e53795b137ca33ca25f8f693313adaf2beeaf. 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/QZMEM2163894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaf9215a7f2fd6b395920e7f77d878c58985783057475b2cdc7f703d35be583. 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/QZMEM2163895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2240ca988005824ee39d2158781d134d3208e6484b19b48be1385ab36ee495. 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/QZMEM2163896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4c4826743c192bead93e3e9519bffdf6494eeb68aeb1e295afa759cd9fcbb8. 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/QZMEM2163891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93981763d9b4672461e12bdd54c653dad55e1ae754b7f25c4e631354f820b8e. 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/QZFZ62157440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191619a37ec86ba2b9582407b3af881a3d261f6329990d7dbc52ee57c0b2c7f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ62157444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0447df47db45d22d7ab7bc0fc95d24a7f30a2c920891b91d455a6516d0e95638. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ62157445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c2c3fde99f9e76e1e61fcab965fafa6ffd719736631f83b064b7fb8cd0562. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QZFZ62157439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afcada113283acbf364a07491be364963eb4388eadd2e3b52ab0daa60551433. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZFZ62157441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dedec8945b6819cb4d414e4bc6ad2e684549374f350ceccf44ac57ae170f94. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZFZ62157443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378c110fad9011283cd6c326a992d7be4af1e40d3a5d7ec677ed26abc7595464. 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/QZFZ62151257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932708ba8973f4277c6c82cf284f01c21aa98c623dd776bceb63edbc29d0b88e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZFZ62157446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71763eb68552c000f166532198caf96467f049b883a460d7661acf5d0bc1973e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBSMU6927060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8502e4f4c7fbf6d86d430afd30ad6c34f132d7980c8a396ca8535602f63b6b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642101101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc832e2b59c2fa0928cc39b9b27a588090deaefc5af119289fb8f6be94b6ae5. 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/FRR642101102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1af29ccdbc9b4ccb9ae6a5de34eaba292d6131a9facb221f790705ddc5393b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAW2224991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37592637a1430d5837ee266b52849d8ebc292539d6c34bb73e9804365bb4530. 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/QZTAW2224994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef480a765f3632a7323ed9782f0ef7706fd0f40d95634f13bcb0e0fbb511ab6. 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/FRDV82201820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4d18beacaab72f4c9f50329f28fc61c8fed535f04bbee1c83b2909c785c64d. 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/FRDV82201870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551d460a58b37dc7831f87614f45e27d1cb06ef0e8e19341ba4564c1541014aa. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/FRDV82201800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef46881e6fa366cb62a71ca46560317a2ec7a647821dfc8ceb9556fab6d48e3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRDV82201810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92872c5909f94953b1cfb4bb60e579ae5b1ba5bcc22c36746127549466d59ea. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRDV82201840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b413e923c8d6ae6b00bfb12ef03b993bfed561bc51f051e2d40e1a3221b1d7d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRDV82201850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5b94bf00c26d847e2f70ac39f0559633fb3eaa40df40fc502b6fe4068a53c4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FRDV82201630.