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 0x7bd84fb119c07c678334e04a3ba127f46ed0dfaddf6080571959793de937a5e2. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3eea37ef-50b8-418b-b7a0-65be2941a11a.json and https://artists.proofprofile.net/proofs/artist/3eea37ef-50b8-418b-b7a0-65be2941a11a.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 0xca40f0dc48773287b54c77e7570927e31b9f30c383b59220b6dfc24ac09e9740. 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/TCAIX2492704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8296ef02c34d1081987eb38655827bac41c3d59bd6534b067815eb07deb49bb4. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:04:18Z), 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/TCAJF2508857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82fbbcd3e390e62f263b698ccbb856ea8e45cb55e6038b744e9b6d93cfbbe8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJI2561730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eb91cf780e74e0d0ac8e5820b34ed7592b8f8f23ae41c88c471bc0df3541e4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJI2561760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63984c299c2220716e0329b77321ac972e608e4af8126f053e2751ae2c80e48. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:02Z), 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/TCAJI2561781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286939cbbc643f7694496c3193d15178e85625dbd7472979c8fa0e8212e1ed81. 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/TCAJI2561794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d445707aa1539cf9daff5932a05ba676579fe99b57ec963e6971859a917930. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAJI2561874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537eeabc22280eedb0d96ff1d8783e7744681fd40c8661bc7cb1d29524e80a26. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJI2561904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d7339f9023472955b5cf00148aab2d38b508cec9503bf4e194a85b89554e4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJI2561940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca40f0dc48773287b54c77e7570927e31b9f30c383b59220b6dfc24ac09e9740. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAIX2492704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828827e410b10034a800453dbe3e78e978f9703639053d981e47a088e7af2bd. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAJC2407929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce831b37ec44ae56f4263bfd5bb062a72b5f4b16f35d021c6eebfe0d0fdbff41. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAJG2572042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0b37025b8b59f5dac0f10795d202eec6e1036995de804bcbc9eea5e1c7253f. 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/TCAJI2562069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307e5d15b83e3b196d62152e4af343ae288a42564a438f5c2b7da3c2b7b3159d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJT2531197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b037dfde2586a78da6bc45f9a426e29545a93ccc90616f29b1e38fd555d868. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJT2531219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01beb9d980684082ab44795698a09848e7cc3b5bc06cf94a7344301701ba68a9. 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/TCAJT2531261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aed774b9009a0e27f5a8e7107f1c6e3d4714e9f799c32a7fc3e10d5d09e405. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJZ2590708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7b437c126e0c171bedb459275ca62670346ec1bcce8384300cc9af8f76288. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAKB2518955.