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 0xfa0f790e50a36b15c289c98a898882ecd56ca1e427042a311f19bbb1dcb4c7a1. 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/fe0f09bc-df21-4a21-8743-77d43ca8da16.json and https://artists.proofprofile.net/proofs/artist/fe0f09bc-df21-4a21-8743-77d43ca8da16.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 0xea045406456d8531c4a5dfa846f351df41928d9946eb5c88adcabc43422d04f9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NOGTA9916030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc68b586e179d34c880ee5aff8fd009670d1c99df11df97574b473cd362c674c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:57Z), 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/NOGTA9916040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174b577ea04f18e4a1c9573173623aca0f9ce01a8047f972817fce68a13a8b31. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/NOGTA9916050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da305ae7b4ffb5f3a90a55f618eed7a21bf4845c843279b0e96c0b29c660e31. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NOGTA9916060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadc5d64379f70a17d1ba015b0c0903045c34062f1bd997be63da2a14ed2e063. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:18Z), 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/NOGTA9916070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b721ecb9479d6ad992da4252477bc7e994cfd90fc7572458f3d869e36f8061e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/NOGTA9916080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2595f76c974ce563cdb93280cf14c1006c6ffb0559a267a38351b50c70afa6f4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NOGTA9916110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a3dadbdbb744c77b96a89b416bed7f183bd7c4228724178df7ec01080932e7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NOGTA9916130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58fc559c2ae3b23a15c4e5ae8dca7bc634ddd2ce647d64ab9d95bedb28b017. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NOGTA9916150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4138d472b38d32016af48addc5a644695d30b0e6320deed054a86e1c611dfda9. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/NOGTA0137010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247547ef41cd1b72b310a556f74c83b36f3359de1ff841c962207b8cb41176a0. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/NOGTA0137030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8542351cfac7ce729480ecb2e55cf8cbb7335335a229dce961ad628535bb09. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NOGTF0119100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d6dcdb5b1afa743a68fbcb9f3d124c7e83f2a1742d83a673d2ad21c22eb519. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/NOGTA0137070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6957cca50edca1dba649d6e8d90f16f15ce87c2672558dc46127d88a509d30ec. 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/NOGTA0137130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7033847e8100f8667e744130e4826108c371e58be39079a2222454901e24ccfd. 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/NOGTA0422050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b172a515b0149dcacc29e577241d00599fe8422faff6b4ba51aea9e9aaa67ea. 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/NOGTA0422060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75222ede59705a44eeb7a53b555f70aca45abc58fab628a3b1f77de2d9e5e90b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:00Z), 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/NOGTA0422070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc104cc7d2f545bcfa917f05d79375348f015c68d922324a419df6b548deef571. 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/NOGTA0422080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd678299287b99201c2c86922f19ab842b67e42e0a87c44768a71f80332d9223f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NOGTA1786771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cd8ddcf7560aa4c213ab502cc74e086010c024823ac8031c08f7d43dbb4e2f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NOGTA0422100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9375f4230ecd7d7c329e8644422aad242ffbd10356c293a8c6759c6f4a91018e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOGTA0422110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe977a13ef77c88f634074b5f23697f531bc1ca56cfe3e84d7d731a2ba3a834. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:39:13Z), 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/NOGTA0422140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf974ae40a3f11bfbe28e65eb7c9702321718a4fc25abad1e57f2f4ad27e0ee8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:44Z), 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/NOGTA0277030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ae4589675a6ccaba927f948dda9f6c18da1f6767538d2c6c347de2edacf3d5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOGTA0830040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d248390795332a85da65c62ea8ce22316186ac5d9392b9c73f9bcdaa7116d. 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/NOGTA0830050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8929d95a4af04de1dbd174b65ba7344d149b88b8b7c8bbaefa8dda012c41c4f0. 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/NOGTA0819010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9473e1487326ad6c6c701c7becf9ea033da62580221c81619c5c00dd10070bf4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOGTA0819040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7cd2124838d9b32300ce3f48edd5adc1fce82abee297210f972eb75a56927. 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/NOGTA0819030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4b8e97d4e3fcee9d5a3daa44098a8c6b587f174b997efb920d28e7c00323b3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NOGTA0830100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d3bd3381f10a6d7ac46f95bb242e9e4f0b50777248506849f50dac405a1d6b. 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/NOGTA0830110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f6e75399b279d9f8ef3b700492fdce9708e27e1a57abcbe81b39a96986d879. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOGTA0830120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1acc21510c146843fcf470b56ec9d98e89fe59ba226eff8d8e8f03a12c26f5b. 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/NOGTA0830130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1b4a0b4634a3466c51e3040346116dcb4a6740a7050df2ce2f452a35e5c5a. 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/NOGTA0830140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27a07cbbf9d5c0e03449082b581030180fe4c5afc92e330988ab0e56f6022d. 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/NOGTA0830160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6f47c31011611de1887fec508645fe4be230db71ef13374d17bbff866a646. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:22:21Z), 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/NOGTA1202030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad11e46a46707e65cdf2219eb99142cabfa65af0a1fd6cd5bff0ad4fc9ef05. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOGTA1202060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e839047b55b1897fcbbbc2ba15f3c5d483e12d4f6dbc06d5dbe23fe31c0ab5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:55Z), 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/NOGTA1202080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b63090aaafe5a4e22b4bc490404768fa622cf18666e369f653c25518be6faa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:02Z), 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/NOGTA1202120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21dc845fa4dc17913df44b2bd825e69140c29397a140e4ad83c1db91c4fab37. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/NOCEM2015010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be717443426f683e2b1595e9d68a655dacec8aa4302aa3c47b1c6e483fd073e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NOCEM2015040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0222d2c3d781b99a0a302f64ad685b3d7622df437e299579e679b4d8588794b. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:34Z), 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/NOCEM2015050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d85492ca54dc79afdfb73e20eaf7021b29d35afc636575423faa0293f62b36. 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/NOCEM2015070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0736bad770aa8e128cb755a5fbb8466e66bb5c918bfd435b4aed61f51b431bf. 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/NOCEM2015080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587d74d88fabb8aca36faaa681df3661ebe35e2f3a12e011cb78b13bc1ab480. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/NOCEM2015090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f8ddd6acfaf13ad36c1cd8c96e05bb122d8b02350271e17083322f4bf6d4a0. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/NOCEM2015120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6369961a61d0342ebb7297342220e66fd9eb7bd3e628e3fb8bf2d98c3b5258. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NOCEM2015130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918aa3611f00c7930ca23324222a1cc1628a4f6556e72c74d938b0f7050283ea. 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/NOGTA2367810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b73bc7e319bb092f723d070fc1729c7c166d8d4efa1c5704544e166daebe39. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NOGTA0598010.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a8aeabd4362df82d8bb74462e5e2e3f0798ccb91108d170494f0bcc7b1e99d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NOGTA0598020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbd9254ee5cf2685fc3bf591dda66fc726740cbd42dcf1cf76c5f1a78cbcfe2. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/NOX9X3501814.