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 0x2ecbbafbd1295b0a2b1f8d9f90b375d2b07e07c707a368cf73f867ed53a233cf. 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/3e2cc037-d43f-4615-b56f-eac6bc795394.json and https://artists.proofprofile.net/proofs/artist/3e2cc037-d43f-4615-b56f-eac6bc795394.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 0x5d2b2a2ec0abc0c54e419f38415afdb07997214693bc47889dd53c583c88ec68. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES61805383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e2e5cd54ebd714b895d86b57d9afd44c71df3e78056d7f80ca8e3a8eaf670. 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/QZK6P2050522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ed84a8d59a2e3299d7b37abafa719c48939579f3babd833778d523a6f3a2ec. 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/QZHNB2576358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e10393940781ffeba82d1a2e461d6dc0d98b6004d2a48643d9e2a18d44decd2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNB2576362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf91d4235ac9b518566eebac3a3495a6b2d5bb8ab1c8c4928fad2596667a4a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:31Z), 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/QZHNB2576363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b38a8d87bdb58de72bd4851147fe1d0f81be81ff49f46004334a2cedc3143a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:52:26Z), 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/QZHNB2576368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f3893b05cec88310d8ce41a8161889497486a311c903f4c1b68fe9183a3ac. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZK6L2575105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8908b98cbb55d40449d428033028fd31e7faa5ed6f776a43c3947e4a394e41. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:27:50Z), 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/QZK6L2575111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1c4920c9738226294781fc84f58c4495b9cf918597c88bca1d8f541f6ed85a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6L2575112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc41ac4f14a775e5c64e9cff2551612ff8bc59eec050e2f415c0a44914c26ec8. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6L2575114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf1daf62e770b94b91cb684257baa5eb729aea03f7c653ea270a28984bc3b2. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6L2575119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f5129d31e9c19568982e4fa235d05f74afedc074dda380bdaa9a2fbbd6e2ef. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZMEP2558209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87065cd3f694aee936e877323e16b0f4d78cc3d36d146697e4eca915c009b20c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZMEP2558210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc627c8b70751033c98372208982a14f07085092eb7912b0a9cf957569b87868a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMEP2558212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c0f775c739b8193a7f4b64d1ddade386bd4e391f09438687e51b745af81dc9. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZMEP2558213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe930a971ab99e611b84c31dac40a6f414884d13676aa2252c8633194b575b083. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZMEP2558214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d5d74cf38fa661c2d2a88f991a91e7702969fa677ed1bb6cb5afa9f02f3ef. 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/QZMEP2558215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19d58f340df0add1cf5f9c2dc3dc18f78583312cc9f32c87a869dbefcfea797. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMEP2558217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601e67979ab57692c62e1b0af80868656de06a64f3b987e7c697f44720f5438e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZMEP2558218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f0a249f0e106ff6210ee1cfefdac8ddc01931aaa9a95494fcbdbce175885a3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEP2558224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912b8282661ef1db99802952fa2fe1b65b80ea29204e08fcf6da15ff4d8dd660. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:38Z), 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/QZMEP2558225.