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 0x2831d7fad13585f316efcba2f1f7928f0749a0b55002d9fd2d13567572f4819c. 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/a0a9efbc-e1bc-4bc0-895b-92c7b41d4f50.json and https://artists.proofprofile.net/proofs/artist/a0a9efbc-e1bc-4bc0-895b-92c7b41d4f50.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 0xf17e6b4e582e4703efcc9b4093a49940cba3322875dac4d94009c1ce41340632. 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/DK4YA2281801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ada5043b5773d332ef52d9992e410cedf501d5f17e10b5f06f58335e47d0530. 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/NL2QC2000128.
Distant Planet (Carl Clarks x Tom Franke Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838852866309db66582ea977a4b3c8165391f433cef09ff191389ab4f739cce0. 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/DEA312400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddadb5123dfadad7403756127859c7e4843c8485092fede3250f4ec2b7169f99. 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/DEA312401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d50f28a3c8ac8ddc3948b14beb21607289a616684d8bd92e25b79f61bccad6b. 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/DEA312401132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e577794c8f5bee82fb11a1c6dd81dffc5779c4110af66ee1756bbefabd02f63. 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/DEA312400867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e411771002e64f2a8457575e8042a9302f625c81170fb89d09d960b901b3f9. 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/DEA312400340.
Somebody You're Not (Robbie Rivera Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73966cdb1143ff14fee1631eb93ca10c377b4b9059a5b65ee9f9d9aebe3e75b3. 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/DEA312400065.
Somebody You're Not (Stupid Whizkid Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051b0ade7b0989b21710ad51c46f991eb6e1f94da90a73e098a3eb1383a0d9a. 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/DK4YA2303301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac4b3522cfa86a423d9fd4e15f05e679136ed649788c6e0b71c65e413dec3ac. 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/NL2QC2100760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfbaa1ee9f6078e65cbde64beda0122af1b0e60ed059df3bc135438c01c08eb. 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/NL2QC2100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dfee8ac2bb56d49eb75eb34a3b66457726dec4a8f5edfe152eb28f8c8e8bc7. 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/NL2QC2100467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef568f5aea034837eae1753604417f487848fbb4a52210c29bc992555d94e2c. 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/NL2QC2100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bca07dab4cfdd66e684d9960c0102b247a1a0f4489bee9ebbe3641585e7360. 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/NL2QC2000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01771fa370f2cf3b3ba7a6eb094d98b648b925469e39a256d3bfe27ea17adb52. 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/NL2QC2000022.