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 0xc5b19b48f5b6a98c2e85265c0c3d9ecae6ed5dff15b135d154c0b3f037a8fd73. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ab7877a-0214-4e34-a52e-deea77e3361f.json and https://artists.proofprofile.net/proofs/artist/5ab7877a-0214-4e34-a52e-deea77e3361f.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 0xf4c5cf2a5fc2306800159dc2405f32eee739c0df53edba03c263588ebbe0c475. 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/TWAE32302253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221819db75c2739af6f3435d180df06d171a5c3b42b5124fe916ac8bda9c8ab1. 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/TWAE32204619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f790831d065b054b74bfe1bbddaff790df80b194cfcb68f6e8f59f5b8dfe5a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWAE32204620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451e85f687419c09a58cd599dee5c871ee921ccf56bd5dd457f7162365523a5. 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/TWAE32204621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486b0414a128be5fc016f1cd89f6c27b520aa862bd3a0b723dcc2270e59b849. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWAE32204391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd750d521e49a1c6780e87c18ecfb5b0b795d09860476849fee3dad29df9ee0a4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWAE32204625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9d6fa360b3f871cc0e7e4d602b8cc719241e2861d9a5dc5f855cdaaed8dd10. 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/TWAE32204626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71046064c595c028163fa6dd88d88a8bd43c7a1cb4e6c15bd67d64dd442032d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAE32204627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519b6017d0b45b59ec7ee7fc92e0cfdd92a758798af48417af6fe4d21a896b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWAE32204629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdc2469ce369fd4148e3b3d80fd91a109c678e093b27da922ab740b59b815f1. 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/TWAE32204578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1748210199eb64494c5b469ec6bd97d16271afa146c28e5cbe94164e5fb56. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWAE32204630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230205563c9d3b93de3d51a3249ef9742056c680de93ec9c3b735602d394162. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TWAE32204622.
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 0xa668ef4b5ebe4c05cfd95c98b7d98e94fbef17f18b3ebb48318f623378fb11a1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TWAE32204562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b52e16097a5203ccf6d5975d6eac45d24f63faaf522721c4632eeb97770cdbb. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TWAE32204623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10345db38535fb51605e252179aa22cdcb22c9924037e234f387e060df6f4904. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWAE32204624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb41413dcb676202144d9d1aec0176d3a56f8e30f38c9851b63912d32a19c10c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWAE32204628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0334e8cca741c5b853f424486729e124083407211a358226eda2a030bf1602. 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/HKA412300574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75a02e5e3ffceb4f01e04aceafb0ea1977afdc3ca763cc8ad0ef77ade39d8a6. 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/CNZ612400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0913ba06d8da4b4932db541325a2f09102f967e686817fde76f0f3d67f26ac5b. 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/TWAE32403308.
WDFA (Feat. Masiwei & DZknow of Higher Brothers & Avatar Darko) (Prod. by GroovyRoom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de2374bdb57726e135a5e7c069497898cf7e2de4ff2d1dabb178b25cf8d249b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRC711900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1221310687a7f2a9aff3cfcbe623714455a1b14d27d333e920c4909b55218c. 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/HKE672100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9ea485c9ae20e208933fc2668f012506e44b706fa2ff8c9b6a0fef52bdc46. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKE672200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956719e173e5791391026b9702df4a9150c1b7c11f8afe3ff067cefd3b43247. 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/TWA472288022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4161409d62f6da37fd85e64ec2797c180f28916721601b283ae0d374693f73. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKE672100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be6bf942fec327eaa8164a43297f848140d11fea9668973224f5f249a4d778d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR10S2201206.