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 0x8833ab94a9a68b25ef47e8001ed851c52629a859e7cf68a3a7c713f03c508715. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2f6ef41-7822-4e24-9b8d-9ae952a2a823.json and https://artists.proofprofile.net/proofs/artist/f2f6ef41-7822-4e24-9b8d-9ae952a2a823.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 0x712bca87da512990c3f794fbf18481d05c477a4d2f9347706dd942deaf162a37. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZAGN11600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2a0e5f45b32a515e0d9f289c209ccb799920ad9546b8e055cc9054f757082. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAGN11600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb826d95f11addaf7864f6560feb2b77d75869fe16c0950a4ff86eb269cf62d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAGN11600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce559bdc6707a27fbbdb756bf03fad16371a6c2199b4b8a976f96bc3f2ba33ce. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ZAGN11600005.
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 0x11c7a8ddb173256eb8351928da082112770a09486e306e48da8839c389da3181. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ZAGN11600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c00b7e33d4c2ee26a2487c64b46d2300a00f21d9c333f68e5906ddc2417e539. 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/ZA34K2301663.
Got Me For Life (feat. Artwork Sounds, NOMFLEEK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42723bf85de1d637432686e6918f14e4055f849028febcd5da6748fabdf929f7. 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/ZA9ED2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864ac204a45720175590dd1f37b585afd4e6bbac70915873a1f414c42df7c266. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/ZAC012401235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d00be1aeba32a805c30c314ea954c38be909da3f81ecb8190ea88f8f3605472. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:06:50Z), 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/ZAC012401236.
Grace & Mercy (feat. Shazmicsoul, Tshepo Tsotetsi)
The Gospel According To Artwork Sounds Chapter II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519ec243019d9f9fc7f444a139a6a72dd773348050cc806ca430103981046ae3. 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/ZA56E2302116.
The Gospel According To Artwork Sounds Chapter III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81142126696ee07f92f537e9c874f33abf073859f82e35244448f680ab2a5682. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA56E2415952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d4a8cf538831e36a86f66d1442858c50973e43b7beb10ae756be9bd836bb4c. 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/ZAM142300394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b76fd451ccfb478fc479938e17e38043f5812b40853c4e4660fa8c73f8699bc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAM142300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d04990cccc99fb36c8da95479c5dcc1136fc1380a2ddc4c76c905dbea0979c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAUM72300964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b5e70f92ca743e1e9ef7e50d27afe21ad4a5e583849da3aff6b14f6e39c54. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ZAS902200003.