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 0xccef34cb207c2ec4ea9ee6a4a693e92e1c6155010a5f414650e47418b1281dfd. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40b515ae-674f-420c-a030-36e5cf0449b3.json and https://artists.proofprofile.net/proofs/artist/40b515ae-674f-420c-a030-36e5cf0449b3.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 0x66029c2a15bfdce459e3200496cfcd2e49952781eaea6cc8ae73e93fc021068f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GRFM12500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ded486c796a33c5228aa7b71692a3a9b00d96f5ca84d7de241409ddea423fb3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:44:20Z), 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/GRFM12500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b93fd6e6d0c3afff40fa48fa66a28ce55333dce8602e36f633736568ed6d7e. 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/GRFM12500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b753233599675c9336df2d9b4089187524ca22969fdb611c02f9f54fa9bd1b8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GRFM12500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a966595ba54cd282c3ab480d9f3aa957b671c4ce68f01f2c2f9ad19af99db60. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:36Z), 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/GRFM12500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79688be128b6eb1b5bfbf54ad42d24124292964dda6e14ae9428b69ed49f0830. 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/GRFM12500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba38bde9fd9950b85ccbb338b7ad41e35766cef15ad92f487a211e14d16d82bd. 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/GRFM12500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cebdd158f1cf8cb2ae0d5fe3dcefed80efad0e3eb4d91e3089080f83fa5760. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GRFM12500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ddcda226816153e9daa893af750841e568bcf9e57974613044bf7d8b6033b7. 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/GRFM12500427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f159093c8db3d60a50dfea6afd82271c36bac7b164ac59aa51755523284705. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:46:51Z), 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/GRFM12500428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810a0f1cc98feb5da717ccd054843198b6f3310693cfc24470e40a5357648ebc. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GRFM12500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ce672dff416f5f060702182e9e02504e496a78744d430974a6130744e8af77. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:45Z), 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/GRFM12500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b98c36077c8a37f50748e2039932929c2ed8481e8f50e0cdfb2f4c40848e2c0. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GRFM12500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d8d7226bca28916b9faf5c4ea7df38826064dfc544adac11282af564f271a7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:55Z), 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/GRFM12500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56aad149ccede6f5be670314ac3cff51358758c79a7ba818f3f043d18dd0347. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GRFM12500433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375087b6b8f9842917c99f7fc434f7b898f95f30c50a4285e76b475bbff46d4d. 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/GRFM12500434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1c3768c1575a7dae55601e96660ec979bfca5a68f24462dddd28fd867412ee. 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/GRFM12500435.