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 0xcbab1dffc4a6f31195aa505166c6762c32fcbba58183270cc51f6087e5cebcc6. 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/242befab-6001-433f-b1b6-ce2c7f4db419.json and https://artists.proofprofile.net/proofs/artist/242befab-6001-433f-b1b6-ce2c7f4db419.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 0x40a3972574f33a1e52adb88abdd525d2bab4fbde64cf2c11ff7268e0187cc1fe. 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/ITFR82410041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5f9abbaa9e67783e5f19212af76db93ccfe311e14f3c41e6abb5afd6a03e15. 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/DEEC31810518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc49490bfeed752775676e8f79c48d2372e8f35eb563a06daf18d16f48f3aa. 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/FR00Y2000028.
3 Letters (Stereocalypse Remix) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9bc66a866ec20257cef39b0d62a01d5b53edec680c560349f27b115f3bd64. 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/FR00Y2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ef7fccb8336e7a883f63946b4afc3b28f8bc9c5fc3bf96fdbdf47fe5a5541. 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/DEEC31810047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2a793bd481f0d456ec0fbd5fbee08b45ba18d62c9fce0b3aa7c18bacff3623. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEEC31810049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ded385fe51ab78845192eae3a32e080ed14eb1ee7a7ad35f73a0cb8c0a5ba3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEEC31810050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e445d53f3ce96a1f4f1d0e412b5eccc06c512077cba8687d28baec084fa24. 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/DEBE71700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6003c356636211e161169e644c9ff05272d4f62881d9e19b558eb7385be04cf7. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DEBE71700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61732c987eaa58a37bf548c134ca8dfd53ba8d5004ca59db88aea93a4909bfb. 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/CHC651600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096c17573215f5f6e40b027cbdb8c60703851760a98238c39062b375683bc2d7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/CHC651600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199908b361ef442fabb9e3b3cd457450e55cd00257bdf841ffd2ad52147ea33f. 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/DEPX41900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66484f9670382cf3c35a005097357a388e4c3b9d952a76b2bfb00538620863c8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBHFW1800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b73bf0cae243a583d3aac4f771099b71eb8c7d2e6b561ac683ed96b30166406. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEPX41800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9693967a6228e05627d1fbdcf2334d4a239e4ff03def48d4a9706a81026ce46. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBKQU2365326.