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 0xdada3d2fb7a9c07658785527dcc32520cf8680d93d5c5541331efd57b5bdce08. 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/cbc4ed8f-fd52-4d2f-96ad-28c26a62363d.json and https://artists.proofprofile.net/proofs/artist/cbc4ed8f-fd52-4d2f-96ad-28c26a62363d.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 0x69b5cc58ee33659b32cd042e9315dd759e6a65900347b95de82d30126b11ad9f. 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/US83Z2320065.
Something Hides - Herrhausen & Treindl Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b14e7dc2c81161393abc14d71394f735f8973bf3555c03d9ea5c8e8a9dab026. 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/US83Z2320067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dae38ea156d2f9ac4a3c524c44a4d7f60060800a479cce13a1612b650671ac. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/US83Z2320068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f5d845574b77a83284fbc42c4b8729335f349fc22d4132267461fceab29dca. 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/US83Z2320069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee392e4f50d815c5b063b00d2e1165b110b9deef4c499235cfb81ef461afb678. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US83Z2320066.
Something Hides (Herrhausen & Treindl Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b14e7dc2c81161393abc14d71394f735f8973bf3555c03d9ea5c8e8a9dab026. 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/US83Z2320067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b6d88d0a7a544dbbc564aa088ae325489d5628a329b73b4e2145eedfe74a10. 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/US83Z2018719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9af84563e6199a0ba14fb9ffab1925df6c103eb818cf20c3489e5b9000053f. 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/US83Z2018720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c5444ddc6973cc0e41830a9b9923fc229ec17049fa3d15062baf18118c61aa. 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/US83Z2018721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18125f7612b40428f4fbdc537bbc30a69dad0a358c7dcb02d20b41e57dd1c824. 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/US83Z2018722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a3687249707dc4ea0e57b0b4638d7d449725d5452f5e711f0629b9cafea705. 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/CA5KR2152108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81143cd5a4ae40907e8c7712667606811a8de825caa2cd3d249bc076c411ac. 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/CA5KR2152104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bfc52c0176189fef1f3cea29f5560ae6333ba54c40927d253ae42ddd0650ca. 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/CA5KR2152105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d6691276ee5cd64328f21939ac477b33066b0b211b728402b63552aef57a4. 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/CA5KR2152107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cd04282034f413422faf1841cf2528827c8aad6b061ee14545a63b37f30c50. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH742309386.