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 0xdf5cee452dd1445d0d185832b0408c36ae48c4af635c699b7e9bc1e2ab6f56e5. 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/38b29ccc-d640-45ed-bc2c-1794d1048f94.json and https://artists.proofprofile.net/proofs/artist/38b29ccc-d640-45ed-bc2c-1794d1048f94.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 0x6db8e093abf551bd915217be9135cb0f7954f4fb0fd880358392a84253e7b50b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TR2181518502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd267049c707dabba148a63d307e4d142046ebc0b290e5989019a8b1ebeeb24d6. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/TR2181518503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e61748c008993acb448068d5e8e43ec7229fc389c46f86733d90980eeebc981. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TR2811600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a06ff2fde8c969485c5c98190b16296d7924a1b547b39981e9ebc18d2a72467. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TR2811600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd09dd69be6cf87e215d7f9f68ee18f5d5333691fe09d9093bea3f9edbc2f057. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:22:40Z), 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/TR2811600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d258ee848d756f6e1256099588bf72eb5e004bf3aa1b1dde774f289431a11. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR2811600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64492f01f8a4b25c828eeaae873f517be643c932976065e3125b940407909fd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TR2811800327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b8de175aaedd434b27a42840a2bbed52ab79bc10b30754ca7d5ad2d2d4f3b8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR0392100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd979d795175ea38f3d3bb2eb635ef2351067be210e0db82ea5bebc461c553. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR59R2127293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a4dbef60188df69306d5ad6d258472bfc49103de5fb4f5a66b9d3b52d3791c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TR0392200047.