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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ff2638571912454d5fe3cdde63a8ee9e6e938e69a7636f66329a5c28014114. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7346e622-1217-476b-a07e-ecf40cfc36e9.json and https://artists.proofprofile.net/proofs/artist/7346e622-1217-476b-a07e-ecf40cfc36e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SZN Greetings (Dear...) [feat. Solomon Headen]
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265bc3a295e9463da13b66fbb46fd39026d6e51dc39bad0dc7f9f2731ff2c1de. 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/QZRP52581903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20a8adf7a688261a92f0de1f06aec806d9cf11098f058e2052e26059c7d457b. 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/QZFZ62075199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc7e6bcf815dc8f2f0d1bff24cf29e86fb981a70390dc748efe2b1a4abf5a6c. 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/QZHNA2024648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff87c74e17e983193c0bd1693fd8bc884896fe99f61287dd57144cc85ff6ea7a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP52581884.
SZN III (feat. Jaylon Ashaun & KMO Shamaal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36d34d1c31952d99df2e2b4311c8afcc8a54abf0c16fd74631cf6917bc8333a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZQAY2155171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d16251c1bf9198b40a5fbd1b5bcd2ca3efb73dbf1a043562c9f663ba79a6924. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZRP52581875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f95528a62cf32743168ea5eb52c66c2bd8cff2d6d07eb6f6f1e082145b2c7fc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZS7J2289093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1b1010caaf0c972c36eb89d5163bef85459c205450b75a10ed1617741f4995. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZRP52579018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88eb310e7ab71e3d8d60b41fa6c1a2f90254c4871913a9cd610ee2c5474c77. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZNWT2310297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c893b88e6cfabd10e193ae92391bb20b8a19687ed46a6f076f3ac4fa1aa1e6. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZFYY2400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2612ba1f07a9aafa7cda085d31618dbcee233815383a647f07121a1ab8c141. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZSYP2566062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad410ddfab753fc4ec351ebeaf9e424ffb5a17f1c810241dce7a37604f9c854. 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/QZDA41848097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b9cea4e9d9e2cdc845e2169a9d0d3dd184f7f84e00325b6eb26b02b104a287. 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/QZFZ52058130.