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 0x9c1ac390539b7b36c7d1073c09fea84e966bcba54a1c7091a9b310a9c4c32d67. 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/9b9b3431-13cf-4623-a980-f71cc2b5aeb2.json and https://artists.proofprofile.net/proofs/artist/9b9b3431-13cf-4623-a980-f71cc2b5aeb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Killer Karnival (Dirty) [feat. Diabolic & Thirstin Howl the 3rd]
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 0x527ac66b25d1113d832eef5954459e7f4303d3409903ca1f2ee632f569f70af4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCABI1220980.
The Whistler (feat. Blacastan & Krumbsnatcha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b4e120ad08e172aebacc76745156e33a5b40d5ce7d79ee07b57f8b9c5aa934. 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/TCACQ1634564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630a6161958408467ea469d273c372d3713b34df67ff97309c87f8a21e07d3dc. 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/TCACQ1634611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119f75f22450b2521d752f7db8e9a2e2090cfdfe387fb2ea4b2d2a0e84ab7516. 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/DELJ81622190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f36e866e751097bc945971059db0b015a731648c74296a6f0e5807559d9343c. 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/US6YF0900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7097df92ba8b33c5a19ad19859d86fdb60511950130b3b4c6d38f3e425401db. 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/US6YF2000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78ad5596a33f34265220617ea3462271f749ef0c0106e3a38c1863c9bff446b. 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/NLE801720134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b630009e7535f2a23daeda70a3402753a994f9d7ced35f9e6395cf2b5bcde35. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USA560960070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c706664ba156d856ac7d651ade6aa2232e121696ee321ec7ad14ba5faad77e1. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM7281674489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b7bd13ed0aef8aab685b6dd592a6ba2fc223cd7a6171c2460f2abe6b0217b. 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/QM7281674143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91ce1d9141a01c8aebe15caf6c024a7b9182470d45d495f9492cca7bf9aaa6e. 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/QM7281674158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9714f02c1b603da135ebca6423512a42bcbe53d2968bcae708e97301d72dbbe. 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/FRX452095070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1cc74fcc672ff709c4d1a2d9b1a34648751c5b0347bf3e7619382355923474. 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/USA371049651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a5b6bce70677330cd2b59252d3b98d4382de54469a322610dcb4f4c770a8b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA371049654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ca5ca5aeb061d0b494bac7e2c656e3ab33df71e732873e612e554343c950d9. 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/USA371049663.