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 0xacacb919b484c2ef05a5e4323de0f15e81fca32b1e59363239ae780863765948. 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/98483021-e8e4-465a-9e9a-b9194cd9f00c.json and https://artists.proofprofile.net/proofs/artist/98483021-e8e4-465a-9e9a-b9194cd9f00c.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 0x28b93b9aa44ba7735aa3faaa4fcaea93eb6031d34185b31d3364ce8b0d6dc725. 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/TCAII2471457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69ac39d298e68e63a6eb8440bee331d3f1433c46028f17d9a60119d2ce75135. 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/TCAIA2445618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823a1a3fbbeefe89651c5dc1f12ded4d6e28e88656b0eae5752a8fd1f6069751. 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/TCAHS2397927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f44cb79ab5fc762c07602f985c538a6734ba5229f81a53c3c3ca17658fc36c1. 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/TCAHQ2373898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c66e7d9a10da8bde6be4613cbc11b22c01f9deda0bc4fad32d1278f27f7d6f. 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/TCAHO2311684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1fd710f05626edb2f90034d8b911e3bf68e7f05dd9f55c8cd2d191e7b3f674. 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/TCAHH2344399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0541f3f0e8e30c273d691b459492ee14bfff209c6048e6d464015b1601e65c76. 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/TCAHD2329118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2890fd0ecafee98df529b9514e1ad6b52deb606fde1c7e1f349b56369a1a203b. 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/TCAGY2385383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc4cc33b14383b3d98474f6573101e4963711853be18a862cc2f05f0b6690a0. 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/TCAGR2285166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c542c3b769692a081861ab3a92af34762e5ae5853c663d4779e5f664401729. 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/TCAGO2247104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4547af1a7b076ecb53e7ff56e4654e07ea2693109cce46bce22884b18d45041d. 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/TCAGL2215564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882f2a868c31bd6e62e6d3de3078a2b2644c491972992886933e720597a083db. 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/TCAGJ2218518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10546e56bee6d15d3df4bf733c76e3a098e59e3a446f8600a234425bc5a9a463. 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/TCAGF2233233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8952f130d26f918b30f322885c980aae933b5afe4067f4027eac68e85781f0e. 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/TCAGD2209840.
Smile Like You Mean It (Alastor's Offer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6468a1e05ede506275d34e57bc578dcef022376834dfc7ef9a50b53429b6afa. 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/TCAGB2254059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf885d5b9e5ed48c3f7324a831065eaf454b4dfc9fa52f389e89b604932f6e93b. 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/TCAGB2254019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f264debf7afda818dd5c7668c19a5570bbd3b5a71207674a9a99a213ac2081. 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/TCAGB2254027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc46941b3be37dc16345e4b1f642e3c22e66a397bb887937a282fcc4d1745e8. 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/TCAGB2254042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc215f6e65b7430573bf1f70fc0ebd726c8befc9150f693c0356b1bb60264bae7. 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/TCAGB2253981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1bd47dfe087294bba05fbb589cd1ff26d1ea35cc2b7d2ed09b34987cd0766d. 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/TCAGB2253930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2af3d5571b3ee233864b124f2993857db1628bc2cd37c9876a2e51b0b7d526. 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/TCAGB2253800.