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 0xd20dd1fa3a738eb62e1522379f9c6a02eb6111fef08097aa39e20841ae13fe91. 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/7c53c56f-f949-48e3-a19b-7d5e9f614a92.json and https://artists.proofprofile.net/proofs/artist/7c53c56f-f949-48e3-a19b-7d5e9f614a92.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 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 0xf01a0d00b571372ea442a4c3bc6f0e219d527bd2b3d7007a7deb9fb1f1d7c61a. 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/QZMEN2458283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e589baab85761ff7d0b9a9df361bafc353938ea3344e73adf7b77c5fdad115c. 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/QZMEN2458285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41550a099a6a6d3c3dd1c4c3ee028c53ef970bccb5eb43981f65bd1bbc792c95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEN2458288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520122c2db9c26a4dd41383ed672bbc4cd8d8856f604cd62a92fc14efd9c6798. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZMEN2458290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd890d181c28134bc7722170a6f1278fb050fedae20ce756e0055a79925dde55. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEN2458291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9074b0253941f00efc6e40dd903e3f76170bc841e7c155dfbb3a82a6ba596c. 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/QZMEN2458293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a29d702f097b803b2846f8567295fdcd3d93579dbd95fa676e9269518f8cabc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:25Z), 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/QZHNB2283988.
Da Underground Gospel (sntlouie flip BONUS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c96543120c7c751645b5f1ac8d40fd084ba39de85bb729f05e8e13de5977ae. 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/QZDA62205339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd6d140f7ca14b8e14752aeb7d804334ab4e429185dacbae07185759144617a. 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/QZK6F2149932.
Employee of the Month/Trapper of the Year
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c909e7c1d3146a72c227288a231f7e9f98c6902b5d9856c0845c75e3f301e77. 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/QZHNC2002602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a343a02bfc62c74f1fa6498179b6916f50df83aafc6d909b11cd1ed575d62e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWT2039117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca6bc90ffedd260b65ce428393f9fdbfae0ceb5077a5c3536a5966f57cc2970. 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/QZHN82077975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd81d0c6a905978b1fc4e7f0df06f551f66a36e29eecbdd4dbb9cd4c166bed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWT2039118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccc5e21a7b46482c0621e1e8be19def7965f00b939bee12db818da1c878172a. 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/QZNWT2039119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc9957c1cdd00e8a2a41151341e5051f35d810559f1ce70685c60eb74c06a75. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHNA2053696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf874d5bd6c6f7ba221f8e0e96d8a5411846893b376bd95dc3341d2ef8c631e5f. 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/QZNWT2039123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183282552d9edb0848e1841e550c5049ac6f3067b28e402636a13f012d60de52. 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/QZFZ52004674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd4fb0009f09d2c3df002062984579a6be4669143db78ca8fafdae3011adf41. 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/QZHN61962425.