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 0x328064c7d169cc99d9448f4a6485f01cc568a350abf11e28d46387b6297dd205. 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/8c5a9f76-eb73-4763-9f91-a1d305202f92.json and https://artists.proofprofile.net/proofs/artist/8c5a9f76-eb73-4763-9f91-a1d305202f92.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 0x25d0b28cd5cad090e5f369021a26a7a9b5e0686673cb3037999140d2bf758432. 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/DGA0L2379194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bb1a1e473bbf362775d1fe97cace1820d731e37f0e851c4c8dc5688ed2f94c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DGA0L2379195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44825d141299ceb381eba72fe012789d359cd70cc4feb65c64392f79afbc7b2. 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/DGA0L2379196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa995928b097db52b135cdfe8078e10b4c8a86e2b10fbb3cda5a173284d6c71. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:31Z), 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/DGA0L2379197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19d470afc91b8a0a83e5e9648f43b81b583ddd28fcfd4ff8b9dc9f3759f5dde. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA0L2379198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52224c35de6d0affe67bebe83af017a5316269d343171f898bc13c35e57720f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:35Z), 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/DGA0L2379201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0941f350e9b5ef4468af82c2abd4603925563b5c3bb1f635b14b2a26a616e9a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR59R2466257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23ec3447692df28c7d8a4dfcd81e044b7c1934494e3f5807c9b54634d2d4208. 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/FR59R2466259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b5e47172ed57c2d2a2105ded6e22323e9e8346d126694c06624ed8ef65ed4. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/FR59R2466262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a3f4e0513d69286f7d79011c7cf21bb0ffcbdc549d983ec52cbbc3c5d298e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR59R2466263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef4daf4dcb9993b23c9322aa955604c6ed305c7a798d95511fd0214e519a15. 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/FR59R2466265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7684e32be20820f9e241faf1a3f9e231dbeeb0e111fa4937a73ff6deed91c7c4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DGA062444086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94c87582dc80bd856a3e5bf423797e18ffc24da70364e8cabc788426d4f868. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DGA062482125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eedfa8b4cf960176f91f26f664d7cc73098a16b745406921a7d24c6e43f4f01. 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/DGA062482128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d0dedb4502b810fcb998ddd8ab503efd24e0ca7a2f6c423af70181884c3f87. 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/DGA092449067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bcdb7ca05f4a4a5cb7f28807827b5eb21f944e160f7e048697dc7005121f96. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:27:30Z), 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/DGA0P2406529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad196da1babd6a68efdc1bbbb899bf9c453da4dec37cafe4b2e7ad5abf9854f. 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/DGA0P2406530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014aed740604e2801cb75521d7c9b96a160e2fe3c385e8ae66ab2b6d63c0830f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:48:54Z), 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/DGA0P2406531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005901a00b651ff64f467e1db66c5ca215190b689bbbb6aa9cabf2b1b6fcdc9a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DGA0P2406532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e595b3468404f6b879ad611203a20ad2ec6406d10e42ced45584303a25b109c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA0P2406533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9258e96362753025e6c17171193f4a37f0d2de5b7b10679148661a0e6744fa92. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA0P2406535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39966cd4cb168117d0bf2d31fc110c441ca0c0247be573f59d60cd2234cca602. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:06Z), 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/FRX282510211.