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 0x8cbbc49ed52e1be51a48ddd4f6f8415853f8b93623ba9aea5d3ee37525cc83a0. 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/2bfb74e6-896d-4206-853b-45fa93ca000b.json and https://artists.proofprofile.net/proofs/artist/2bfb74e6-896d-4206-853b-45fa93ca000b.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 0x9f71c76a3dc167245b8434d4fe7bcbdd352c68cd9f1d727228170b32139f3dd2. 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/QZGLM2341018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b71917740d474b8a6c7d41c802a947a66fdcd43b2c958239c0e6af63aec2a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:24Z), 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/USCGH2188297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde16dffa4fb14150515457b53d7fdd95cd8cb1eb0b62ed2325b704113fbbdffa. 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/USCGH2188298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1fd7b61994279e45e861009ae97ca5fbfbeedfbed567e6cbfa8685c4349eb. 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/QZDPF1822861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe969710924e3d9dfc1ff085f67fc96f8c12e37fb8e23f0bd69192382a499b9ae. 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/USCGJ2104396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ceed376aab9200e65075d7d8ebbf65d81ebd5f637e5ce1adc8eebb6883220a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:19Z), 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/FRX202095867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b6a816e9751acf4a4d5a9221c0f55ea0115d5d42ade2320171fe7bf9228f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX202095870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4698b24261d41af2465b364af1ed420cc74ecce2a2c3a00d18aef181ea59f3. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/FRX202095872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df82e355274cab64f8cc8142a16b005fd0bfd810fec1b594e71c493418a6bf5. 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/QZK6L2238363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e46310f9fc51337702a3c74beab4a6b0a5736aa8b3bacade263e8d74147c9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES72278882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5166547398a92763350f3bc7b25983d6ae004e0defbe1c44900e32f2662b2c98. 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/USHM92163103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6d25b7b648655f54024356d77074ed38e1fde8f4b96a8fd2d3fceed9fd137d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM92163104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801694f7f57428ad4359cbfcb72c374b4f7d1239801967f349bd4b255ab91f7. 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/USHM92163105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae7f93e6b060ce3d30e036347f7570c2226bc0b7f0ce796ccce335a7a3be472. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGJ2100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd75b0ae5e15a75a63c870778f97db505b4b7e3fa3ba16167be0ffa119198ac. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTVM2370479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7238816f62415f41e2431ffb980033ac8b2a1758bdd9e97041940dda4f14571e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTVM2370481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877e50e4a0faf020f085bcbfad93df64781e9d3f736b05690b95862c626c18b3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:48Z), 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/QZTVM2370482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75d842640e148d3dc83c0c01c4f0fb4ed29778b19f487e35938f99cb02f61e2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTVM2370483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e04f5c5bdd2a227022f2e9566776c4adaba286cc1d9e3ecbee477325fb4fc. 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/QZTVM2370484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a057c6e12f3aec16103fce60a1018abb7797dd61831594102930098de53f275. 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/QZMZ92422902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b897bb60a6a11e1f9d77b9b04b93c4045836a710818345177c2d27a21707475. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:16Z), 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/ESA012462185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d374c5827f7bbb1f4681cf2d3fe134bb5cb75e889079b1dae31cd84aa6a170. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USUYG1758988.