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 0x447a2912ba8b38229d9a429bca87d8de1c4b3621a8cdbd20ec881cc5fce1a32a. 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/7724c7fd-867d-4c3a-9d10-565ae1930ebd.json and https://artists.proofprofile.net/proofs/artist/7724c7fd-867d-4c3a-9d10-565ae1930ebd.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 0x5d861a8eaab720f5d6323d0e718d0123c3586de2a575b8684ba51b5eae95989f. 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/TCAHJ2364603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b61b0006f523017274ca5190b5440bc774fbf98730096203fd0b60523ad5fe4. 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/TCAGW2356476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b8d07d9df4d50901c87c606706f8e05068ae8a03793a81c0bf2daa0b9a621. 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/TCAGR2206226.
Sunny Afternoon (Tropical Fairytale Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328d7c7751a016255baa12644b96fce82fcc22ca808cf682ef765b1d76d2ccc. 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/TCAGR2206230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f28f7df3a6ef1cdacccfe46da7077c799d54bf5e6360c422870bb004b81b018. 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/TCAGL2263655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cdd89bcaf8bbbb62710158274379aa279803e041d36e5da11a1b47a913002f. 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/TCAGJ2239025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51525fad9d0e247d411601b17a1fcc0504dd85f0fe6acfc7827f8853f77925b3. 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/TCAGJ2232998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e0230288b7376d1cc79e3c356e8366bd0ef93ca75e5dd7f44187dc4da357a8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAGJ2232864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d83f3900e24573fb1ff46aa2f81dceeec800cde1a64896f5a95916db5e22c40. 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/TCAGJ2232721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739ce574a9a5c98ac31e1c2dcf9af475ed95f2c1da134532dad98fa6b9ae7cfc. 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/TCAGP2267925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4afb417ca8a67ba0ddb080bfd39e19202190877651312dfc319fcc6f48cf903. 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/TCAGP2267927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4cb1e80155bc1307890f96f7d86ea0c80a95025d7229aa624d3c5012c5e896. 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/TCAGP2267932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22275053bbe2d5d15769ad2be8dd9ba1cd27628936fba1d391f630361c8339d6. 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/TCAGP2267940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c09908d7060de9eeb9e95869c5bdd868c015d3f3f699448ca094e275b6bad. 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/TCAGP2267944.