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 0xa7129a3cf3aa8ba706a65ac3eb72e9872655d32cef9edcc1a8bb00654dfe2fb6. 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/bd5f769a-ef07-41a9-adbd-800bf240e713.json and https://artists.proofprofile.net/proofs/artist/bd5f769a-ef07-41a9-adbd-800bf240e713.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 0x132e72f91fa46cc1b19f46a891899d8aa17690e4faa6f061e14d1789cb32a306. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USLZJ2075072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2fd44f4261329074e0ab50cce1fb2b55c641758b71187d8945576d2a73542a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTRX2272171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1125d772a88f9386d639dc68571e7a79e12f30181f183211f09e3980a6ff4e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/CA5KR2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc91a553e847f51f00d641faaff8129913d0c0f050f940bccd7141b10dc3df3a. 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/CA5KR2315169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8902ec0d6ca2ab72d1d592ba591f2560a85cb2223677e0d8a05096a28bf4799c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/CA5KR2315178.
It Made Me Fearless - Saint Miller Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e07aad2344d3ea9897976f40aa15cffa258f91c97953d52a302fc445b854d80. 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/CA5KR2315519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c7fffa3bd0118c7e4552197a168271949240bc223bda35bcec04c37435b98b. 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/CA5KR2315518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe563f0d37790f1e42581a0578964163af02626d7d1e924718d2f59611f0e1e1a. 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/CA5KR2315516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b6010256bc557b17154cd5eb56853a625cab8430148bbd6818e6fb17f906f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZVEM2382302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a31e70af6e328793004d666c940a5ead21553aaccc848f3a6443e97330dcf7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZVEM2382276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b6010256bc557b17154cd5eb56853a625cab8430148bbd6818e6fb17f906f. 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/QZVEM2382302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a31e70af6e328793004d666c940a5ead21553aaccc848f3a6443e97330dcf7. 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/QZVEM2382276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cec825b0e9a4fe0624db9f4cc054e3e16a057fd3323d8385cc36cf249d7717. 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/QZVEM2383012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3197a4e8a28a82ef6d68b63de09797188e717278929732054798183092779868. 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/QZVEM2383013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18392867f44b86a00b0bf5a567f240100f9e2e63ac24a4c9858c3019305475e8. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZC5P1800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459c24bbddc93aa5a550eae3bd91c6b2cea2f3bfc14a5098492863a9b85e412d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZC5P1800329.
It Made Me Fearless (Lenny & SL!DE Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc640ecba91469af2694839d2f909c7176b69ce4357fce9b6033cab5973bda1. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/CA5KR2315144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fcf14f11760b569f60e630e0b6933a12144725cd5a82abe941a74530c26e8c. 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/TCAES2063728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab783f5a6eb364351975fe4e520352d1aff99680989fdf0fbfc22f40c6b963e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZN882125832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49998598d592e002ad38898d1b9f3c8ed7a633938059cf4e75c50fc071d21c0. 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/TCAEO1936857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabfd74f2575d80a613b8d1c37b6fa3b78154f2acb88328c2149d1c8dcc9b5d8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZN882205188.