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 0x60cb9b9f55d6382612c22321b47b48750697259ab6f144c8b5081f88187ba811. 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/60538ee7-cc37-4e79-b24a-7d4facf6ae55.json and https://artists.proofprofile.net/proofs/artist/60538ee7-cc37-4e79-b24a-7d4facf6ae55.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 0xf3170e9783b8c0e3ea7a2fc4239c61b32f157cfc477d0aab39730fe4c6c37473. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRB161401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0abf209c5a73fdbbb2f1659debd7d07caaa2dd312843c818f480ff9392d666b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRB161401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcc417f4ec68a29893b5fb51f78ea4ddf120ab6985e100f66fd213f3fc538b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRNAR1800536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22326042fc23bd0c154c47aa4c724b5db01a1b3990e3e7d265d4b953d8c3f2c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/KRNAR1800535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc6fa0516889c38aef61bea4e93fde525f08451d1ceec300c6b5c30218967f2. 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/KRB161401490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550f92813cb7ade955034165add3841ec0399c66604ad61b82322cee0b492485. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRB161401297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09dc198987411414f69d799afeb0c89c86ef1fc4ec56356699ac32c0c78c3b8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRMIM2010765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fc8b7e4bd54222e4fa54237795307996f618793a9f3b322e0792010bdbc454. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRB921726599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc54451c0dd2e5bbb1db802822ac84d136fc60d18f8ad152abd10135bcdca2. 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/KRMIM1909743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c98e6a43a94e1fe38f83ca5f6b027314bb9ba2185f51e5775e8ddf994192db. 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/KSA012373898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9006943d3f6fad31dd38b5410e13205beee3b214c49620c4f469494a4e53866. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KSA012373899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6833e72729e31a66ccb5a5a80857babb640ef99726ad5c659e2b5d32d848eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRB161401802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852ce679eab4db934b95d4bcfd41b0132978758e558b55250f61bbf2888f0857. 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/KRB161401404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb900f00a2a069be5df40135705d800e1e110aaff11a4a4a360d3a6f089a650c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRB161401397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550f92813cb7ade955034165add3841ec0399c66604ad61b82322cee0b492485. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRB161401297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfad899978265908150b0353ab30254d4eb56f684e4211c537f1f49b21e54248. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRB161401079.