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 0x06693c3ee6d134f4874b06347f6be441be05f8fb31684f2228a0594ef765c59b. 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/42f9707d-5bbb-4361-8fcd-254faff311cd.json and https://artists.proofprofile.net/proofs/artist/42f9707d-5bbb-4361-8fcd-254faff311cd.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 0x76c50beed940444b760321dbfedcbd4b12ba6935dc16d7b1fecefe9e05376c05. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBRD52000400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25185506d73a180d34d4f85f69785d9d47247a0a7be6229045570bd7b97f5dd2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB8KE2163459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d0e4d0360764a047ffc4eaf6ca7e68e84473e450f3160ccfc59e2155ab0f0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKQHJ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae0c402cdfcfb2ab87b9d22eb54de39f4e7acbeb10be1788dc58a32556f23d8. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GB8KE2210999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd238663fbef355d1b463c1507c71470b6fd5e08cf9f7b45d5f9f9320fdcf4593. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM42K2353667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab57796b9b21aa7076e05d927291085fef3fd1ba5e04b062ad42f2e52216789. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:19Z), 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/GB8KE2306476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761e434554f8ae69adcfcb109ade6ac73909c1a26d222127d7cc1cb5204d330e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GB8KE2313592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a38a94527c9a256c89e6a6e09b53490bc96e069508f966a1d061e7421ffc7. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:33:02Z), 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/GB8KE2324356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0404dfb82ab069e08de5ca47155381045eda4e8c6f1c3da7b4d9a877e602d9f1. 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/QZS672464612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd427b3651b6b7692180217a71493037e15d3cf5ad7f62dea865c64f2e357b. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QM6P42518621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe654387db2552562c25dfb7315bb259a36d44f0c16cd86066373052d493f9611. 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/GB8KE2410281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc22f2e6d44d866d11c74d5947b9f8491cc0242a386cda8b782616f69b93c70. 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/GB8KE2403955.
Hungry Hippos - Sub Zero & Toxinate Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4949594a27c991efbe692da9b56186c5861f9e7fed40e1d5b4d49d2663236c3b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2211551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5495538379596bbc5ce19841119f26d7a39427f1ebc246de2d8ce2ca165ff. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/GB8KE2309076.
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 0xa38b365d342475a036549aab3051c229281a3f11e478340529272edef6ed5308. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GB8KE2151198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e83666379f5f7cd46494da2e6cbc0fc545b19e0f811f574491e0038a9b810. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBKPL1811016.