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 0x45bbd4a4fd03e3ef6d8cc468911b90128ba6caf1cd923ea8da4f827b51a93188. 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/a6abda51-d11d-417d-b2ab-187980f9b8dd.json and https://artists.proofprofile.net/proofs/artist/a6abda51-d11d-417d-b2ab-187980f9b8dd.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 0xbb0eaa55faa31c94e8808f7863d6cf4c07ef3ba17cb516f0b76cd35abe590ddd. 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/SE6TI2309893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecff4061b7d937b04a0efc847a65c6b0cf050ea3ff7b6014f3e54a2b0923de9. 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/SE6HN2463642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba520e3611b1d0d8ca29288c05ff80764044b3336fa35eddb5228717b2be3d6. 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/GX38U2452569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d3ed2c5c70dac6d26a1613b9c070855a87ae17e36a6ed01b865b719e492706. 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/SE5BU2541506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99415bf3a8c902b98c01df5f81be5941278e1c7106f24592ab273550e186ef2e. 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/GXF972408659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046e78b9fa386913a62f887275578a41150284fe7c274d86ff3294173dce8332. 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/GXFHP2499282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b90031d6b9c16b28b5ecf49ada9f23e59a23d0502c42d8aca4d092d6ec59391. 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/GXF972414971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140ab492936f3b1b4b4507a026d45315caebfd8b4b1001a5276ffa36ee2d74db. 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/GXF972401231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f77e5479886b66b2fd4440a671911f39c6805ccbf7f6de7ef01be6f6be402a2. 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/GBMJG2432058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872e4c03355bcc96448b762cda4e9ab49490a20bed19b67bf12aba9f1a2cbef. 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/GXBDT2466041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f917ae266e93cbea1be5832de75aa48da97ae7af9ccaed6830a43ae843ada86. 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/GX5MY2464245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d5f5b37e2d5d030aa81b4e3a556400c006bc4ba7b245f223c0704b3fb90c49. 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/GXBDS2435905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f75e191cf7b896f9b5934faddb144848084555c46db59910f2b832eb231ebb. 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/GX5MX2409823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f0c3c1f6693cdf088fdb78ceecb23f7c5446d04f3d439c8214102f4c9d68a. 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/GX4R52480390.