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 0x1ea9eb40d34ab0ee3f9cb02f685fb0e2b8c4fe6c585d2fd45d7f5df081129d8b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9607f18-9ebf-4c20-9ca2-8ca01cb2cddf.json and https://artists.proofprofile.net/proofs/artist/f9607f18-9ebf-4c20-9ca2-8ca01cb2cddf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the Stars [(French Version) [Acoustique]]
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 0x7ff2a41db914228127e4eae234dcc44c359b4a797dda4df23399fef1fd500008. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRZ042400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b4de67539c21c680336ff35ccff8fef3da8a176f762b4744af07e559b5e2b0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ042400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba0f599ca57479fe1d2ea57fc29efaf2c967ddaea23982a4749645c100ef55e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRZ042400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eba8821c3c1ce9f9da4cbb4b89cf7ce112456cee53912cc4f554d4b5e0122c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:15Z), 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/FRZ042300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5f705a301acf3b01246e221abe595972037693a5378c4fcb794104c8cccc90. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMBZ92596778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef95ee8a6c07e2b8498f7c11227deed863144cd8c07f7798f88901370d21f0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA62519721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791255cdd606ebed2014f803fa2089a54344c71b00ccf4921018d9ea4d948e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMDA62519674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64401d178e4644ae91db79871ad2318eece12faf2babb7851b84f2a180a55a7e. 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/FRZ042300746.