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 0x327c87c67b3e5cda6036477f792ca1169a32e2e54525891f4d7ad7528d89a5d0. 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/b50e7fb2-d9fb-4e7f-90fe-c313441caec2.json and https://artists.proofprofile.net/proofs/artist/b50e7fb2-d9fb-4e7f-90fe-c313441caec2.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 0x0c8f558682f7940a95c8c511f6cd10bd4e8cbb9b64f18f3caea9365bdad8a809. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCAHO2330046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3185583715977fe5c37bdfaf3b9170db98cd8c327fb063a5d14123d72616f897. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHO2330090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a06501f104bee4d0a3d7ef590c58c315b387af8578c708d18c426035bdb8637. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:45Z), 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/TCAHO2330154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edf0741150eedfa74cca5b38cb331351fb3c551d832e2ac3c9e8003cf29c29a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHO2330194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db1c829e3ddc3b5e52a9fd1401b2c3e63321ce952e553b2c8a8f9718c21d96e. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/TCAHO2348057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd6e7d853721c1ef16dc0c6f843baf1f6d248039abda2f8eda905d2fba32ebd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHO2330273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a247cdc8e4ed907822a5b897dfb002fff40ae4f4999736775660470bd5eb312. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAHO2330297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bddff2c19255cf42c76d703387d74b75d0a2a659dac4e44080ee30762c8438. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAHO2330322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5caf8241cf00e7217f2c891dedfa44892347c49a53d76fd64f03f844518dd1c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAHO2348069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe9e3b22789fe53eb14ad5d6032e4683a71ae98a7bc9190173ef80bb434446a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHO2348082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe324e27bb98f9e199a4d0bd44338afdce856a36666deafa9e8f8c8a88599aa14. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHO2348246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b7ffc35cd31e1cf1ea1443cd75f6a4bb7399195e970fa0038f6f1514926bf3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAHO2348312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68557bb29a7aea813817e3c318df070f32bb756a4e239133779f43d3c40f8ca0. 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/TCAHO2348352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd55a91c88082cd76d1ab29027065f149bd46c5b6b2d3c9ef6a279703596c96. 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/TCAHO2348545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc0642145a13b53120a3421a1767a171994e594cac610176c52f744e9b56832. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHO2357789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a442d815bfa7277785742148b5051ff8508af33219419951d303061bf82a3a4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/TCAHO2365031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b43fe8d500140440a676c6fbc152845e97ab842ed84a531e0563e906e1c72ee. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAHO2365059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9c65703ac25d156b14b8a7627bb9695127506b0860ceecc4867117cb1567c3. 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/TCAHO2365080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2db05677a72e7bd76c967a4ad7176032abe429a62568651134ff25f0d83cca. 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/TCAHO2365245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fb2b6164d5cf948add5763cadcd04624c8d83a9e7e0e5a4b1ef5f6b411f108. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:13:32Z), 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/TCAHS2320751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042627d5a434a11ccecd7d05238922c652f90acdc413c47aed1618681d0c1621. 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/TCAIP2476677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574e75c8a8744d1f8ecc4dbb8b949d0c021ac541c47d107ed9f130065aada6cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJA2421470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7760ce191ee6ab5b34013ee04c7dabfe4d5ce0e957328421491f01c27079ee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAJJ2550859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2074c9d93fb8839afcad9c1efae8df5390c9199a3c4749ab8ef9ba1a5c53d1d6. 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/TCAKA2511240.