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 0x8e917416138b31bc6b73be8f23791c96ccf5b2b75422f2572d51a975e74b5640. 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/0a5e1617-50c1-4383-bb6f-c9bb02cb10fe.json and https://artists.proofprofile.net/proofs/artist/0a5e1617-50c1-4383-bb6f-c9bb02cb10fe.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 0x94e6382628eb67e5a74178522dc8a0f6a70803eea883ed8de20978d2f43013ba. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:22:35Z), 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/QZTBC2340054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d834bff4ac3388394f599cb2c6ae4218a7cc8b215827abd0accb6c269e3ed56. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZWFP2490079.
GOTHAM CITY (YOUNG AVII X LEEXITO Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620eb92838a31cc2ebc54fe020820921c6e63fb528399ddb737af092ebb98a9e. 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/QZZ7P2451213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51153f046f86704ac2cd879722eefda2af968fd676c11495279cd067b0759cb9. 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/QZDA42511268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ed6e3e6dfeafcfe2197819ae055aac160d6494da9571eb90573e1c65774dae. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:26Z), 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/QZHN42569635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfab64352a111fdcec93d934d952fd68239dd6886d6290e38bf0b117e79fd03. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN82565901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae869899f74e6a4460b9910e2beb5373c530645bf64de21e0e673ddb02940472. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:13Z), 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/QZMEN2527525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75899ba0e08eb6d04583b9a1e7def28da3df6bd3390cbd56739b0440753889a. 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/QZTB42512452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65b39878fa85a4d930d8cc1c666de0fd2431f82cb69aeb16b8b007d2c2a184f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTBD2558844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b75851f4ec9595953e4b8f20fcc48d5b365b92fa1fef58316b21f16f861004. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:59:34Z), 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/QZWFR2545081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd05c196eefc4262032b8ca0f55b927a24e9e23704c92309d0515de8ed17a1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWA32201584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301ec9e962a25592d13835ef372d02654424fc291c5e46839d13ed09f5a106d2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6J2370829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056e295c7e26d2ac7fb3ff389965d538c6c79bb3d7366e8573f8d18eefe7db4e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVPL2403368.