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 0x05823444bae8792d982be8c26010176449a0c8a87fc77b1f64620340d3a10cb4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28535af7-f15d-436a-959f-f705fb5962f4.json and https://artists.proofprofile.net/proofs/artist/28535af7-f15d-436a-959f-f705fb5962f4.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 0x12d2d4680562babb67079b704375afaed0c727a586405b4e15da7566c5ccc1c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEVY22100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2250a241130fbecd5ae262a7a59d6e61e804fd8753de3746a9dabe2c04b0da. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEVY22100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb443bc7e7e678872ea1a182a35aa578b85368e3d617b2a4cb2a37a5d5e019e9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEVY22100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2250a241130fbecd5ae262a7a59d6e61e804fd8753de3746a9dabe2c04b0da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVY22100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb443bc7e7e678872ea1a182a35aa578b85368e3d617b2a4cb2a37a5d5e019e9. 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/DEVY22100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488ec029e3ba892bcb0ae31c602004bd22ffa26e4cb8d923af3f64975a20299c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVY22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f719336dfbca1c5d9d9bcb4d08db20dcceeeb5ede89bdd02b6b24e1f54291f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812227903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a74cafb59d3223969466d95f1cf295f27ce35314e67c409fb8934cdd8229bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18fdbc627df95b0abb3cb03134c4275f29a7c695443344f991d00ebaa14bffd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853deedbac43743ed14e7d4f3197a91a46cd2c66d86fd3245da5b6c16664a6f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEPV31310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ac9d39676f0f2ffa3340c7a0b12a8258b23ae8c2c7a0e65237fa473245d190. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPV31310005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e21c231980c983f4396e08fc203d988495f4a8e9a2509a3fc3de6fb435405cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S1910951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935e948cd5b14efd6069063cfce7fb04d3e9b0563319f52f307f0abe61f9c74d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVY21900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5c906bb98fd91985b6e2e8ca4355f2839ae0d2477333cc300f67520d6ff13f. 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/DEQ121746865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2e3a87e619545175c535c9039c41066278853728769522cfcd7a268099c183. 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/DEXS81900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bef3b7d93816566af81a69509603377138877617cdb5ff72c35476a9c521d7. 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/DEQ121426154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9083f029130e4bdf9ae569fbd82649a080da7aa2047fe43d89e10e5527160667. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEDL81300617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a018cdf3d97f317f8de4bc108c21ded6ba63dd003844995f7cbaf0b78da1f8b. 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/DEBL61300922.