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 0xcc60163a7ea04d4a870d8aa1396643fc4349c7bbe911085f71283adfdaee309e. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98614b42-323a-4a3c-8acb-547c39eec775.json and https://artists.proofprofile.net/proofs/artist/98614b42-323a-4a3c-8acb-547c39eec775.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 0x31d88b2c5f50635a902c5e3887cf2d9a6ffce5c98a6dc87b080e5480d342b69a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:34Z), 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/TCAGS2238629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd54d520da316938f6a4ae45ab11e15a434f456be32186b951efcfc5274c46. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:02Z), 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/TCAGS2238646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2b010c1ad255f3d957114c084a7ea4485c8578c49ea48a9f6b0d9215b8ee62. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAGS2238660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6f034c4964627094e40f59be9a285c12bbef21cc934fc18c378160b320ed2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAGS2238674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d73671a832cc48fb250368d4496f45044224a633a4be27194e45911543cadd5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:18Z), 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/TCAGS2238690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a422c6b85375712a872679dddcc3ea7686367a66fa3f9fb09a413220cdab9df. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHA2396054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fd0490a65debbced6e978b0d637dd343cac0bdd937832deee879606a22d9d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITY862400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc613ca919f2a18e65bb10aefd3a371e35487d707b8387b00e5cb6aa75987b874. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ITY862400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fe486f1ad3a7ea591e52324123daefaf5182c89304854fb0210a2d5fd709b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ITY862400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c477408d6107dcd4895c698b37ee5e3926bd842ee8427e568a3087c9df10f2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ITY862400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf92d74081bb54f8629ace2a8045bc6fcf75ce031d5b090a6ca5520199937087. 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/ITY862400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137974c42f19f40e340ae9502405772cb3cad475702dc6150c4ce485de64339e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITY862400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb5026b05e523a55d4cf6b0c82554e15c8c8277ce956d2381eb07b118983530. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:37Z), 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/ITY862400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3448b75243955746d90d071d6927ad36e95a9b97cf66ae707f14fef90a46bfa. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ITY862400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fd0490a65debbced6e978b0d637dd343cac0bdd937832deee879606a22d9d4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:20:24Z), 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/ITY862400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c220eba79d873a70050f9b882e47766617b23ad6e8648bd66edbc840688563c. 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/ITY862400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc10686b2405ea78dab2c929b8d95383cd72137b026a8091f42a6180d888a482. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITY862400067.