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 0x528c0b9862571b0fa9712cf9cf275c7c350ca2790f97f24cd1246e0091cc9b02. 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/f2273368-4d17-4541-aab8-4ff4f13faab4.json and https://artists.proofprofile.net/proofs/artist/f2273368-4d17-4541-aab8-4ff4f13faab4.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 0x3efd33617d847c9c3bbb9b87663d4343fc67e9e8a087efadc5e21e3cad7db6a3. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/FRX991579966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ca179d21c6b897b85ac5e601622d4b2999b7bf780987c7263f2be2c0135ac. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX991579971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58af91d6f28795bb8a64cdb90171314f1634263ba3ae5e2c0456da46f69ed0a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:11Z), 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/FRX451524818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab329ee6c6c09d1174a213af815e7e88835bf15acb00f8aa125f3ee1d3617d6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX451524820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330beceab8c8aad329b57ffcb97146bca6419e1dc6b31123a05f7bbaddbcd698. 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/FRX451524826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7005f9d0ec14732808efdb34e72eff174b3e3362d8d406c6ed0aa78daa49f37. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRX451524835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b5c620d4340885c9e202e25b44fd10d102856bfacca494d3df27df950e2d75. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRX451559757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92750dcc3efefec565ab5a1fbb45adc09d8e71c102f1f446ca6f338a32076b15. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX451559766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea23eede27ba21ef37a25014782d24066d097b4073980667014490730ef8eb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:41Z), 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/FRX451559768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fba6fc1a5772e2011f1b64ef778c7a3f64a406455f00133412ca9c1e0f17d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX451559770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f70908de05561919c3c733963e558b7207f8848820c5600cf1aa3d026d53fe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX451559772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92750dcc3efefec565ab5a1fbb45adc09d8e71c102f1f446ca6f338a32076b15. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRX451559766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bac3474e1357990b8fc0f1b53bfdc6ee65125a3e6a05b38e3c807606a3a83e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41719641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc79a7e666f44946211adfb2eeee014e5e440bdda08bffc57a2b40508e6c830. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR2X41719643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6831ce6d59fbfdfdc260c0c6b8c78f1f4d822652612ab9aee0e860bffc69e72f. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR2X41719645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eedfa49b3328730af55ecc19d9f4f980b230585882adc1a50bbb3d23ef6a0af. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:52Z), 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/DGA062319134.