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 0xbd7c98a7d03aaab8fa1fbe7bdbf760d5e9e750cfc1faaba64ba4a3d3efb266c1. 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/38da1143-0ca7-46ae-9b96-190d4ede9127.json and https://artists.proofprofile.net/proofs/artist/38da1143-0ca7-46ae-9b96-190d4ede9127.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 0x7b747a0fbd573872f528beeb0096aacd067b723a3786940c800b0bf7f03c120f. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAIO2437817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bc13c63db347142398c10ad92cd5b7e870df19725b161ff8616fc928281e44. 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/TCAIN2437828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244f0d2145e9e207076b2ae8209c1ba1f1327655b4e2139b97a50c089aa94a59. 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/TCAIO2437833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7b4c17f56ca4b193d41e6977d47ef17fd1407d64b787138dedae49c73775ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIO2437836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea6b1128d706ff6a09fab1fe0924d343286647dd2efc5869806ff02403ca1dd. 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/TCAIN2437841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a0f7485ade5087c4d515e00be3a825ab464fb81c32119bc851320a517c7344. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIO2437842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362a9945c4f7d1f979efe8f56f8462e2744eb324163618af5cfc3d6a4910f455. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIN2437846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec51637f6d687338c8325c4eaa660a50cd785ce25c014caf53ed70264e68669. 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/TCAIO2437849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d32dd8fff61923aae6c0fbebc607e334f18fbdcf78fcbe0286395e3fcd8756. 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/TCAIO2437855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d1fc79ae2c769c91f7e944dbe54746388ad52fc497aa985c1dd7c7c35d7a11. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:09:46Z), 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/TCAIN2437861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df2dede2886004167fabf058808f703a0cbf40c92da0e29b6046165820dbb8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAIO2437867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a35a0a27ef13e4db08aa488e07d60c7fa940d2a032470d808ec0e4e9b3ad521. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAIO2437872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf874d8e20d56093a35174824ee1425911d9c85cc0af65cbf8a6cf0a10b012b43. 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/TCAIN2437878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9340b7bd7264d22aef4df1df169ab83a4b507c088ea1fba6b556bd6644581b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAIN2437883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa6ac02eb59c2b70c13577933a77b10a62b7b1d10d7fef7eb10aab2c057c085. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAIN2437888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bd539659128262c4479b38d299a893586dd0e94002433da0af1e0b65f30718. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAIO2437898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f88690d36cf363137c78bedc07bfc76bdc7d89f4806996a2a11eacac09555. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAIN2437904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550b6271d00195863f437b5b826bdc8ee8a41a14772789d47ed015721de632cd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:44:22Z), 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/TCAIN2437909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff755c47c845e8e06c8ee6a760390588aa2eaabcf31bde345d48f98bdd474f9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIO2437914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729b3832917e76793236ce4042fe2fdbe1df23528bb4f14e04b7a240ce118a7b. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAIN2437916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191dab17659f0ba22c5de626eeb126fbe6a0cf5e9fac6a561d3f7e9244a733a2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAIO2437919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9805de17363e967c885a54ba60c5684930ac7383fc04e590508867d84d909161. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:45Z), 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/TCAIN2437924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa305707bb60e873db6a8d97c82c972341c277c13d5923cfd9a158a9830ca7066. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAIP2437933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c46316c8d075d264cefa171b104dc997c85d0865dc4736687df1700cfffcb7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:46Z), 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/TCAIN2437942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c6ced245e008d125fbf2dde4e47ed3a0e800655c04ab799a0a716677cf9b8. 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/TCAIN2437945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c956e0629e13fee56b5ae38e23a61e5c60ac65a8435239dedc7ad26987b3af5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIO2437951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b338daa59fec2c211d5a50fe50c1b8c665ccea7f4c4ec570876a7db837c2a. 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/TCAJL2563068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15fa662735539ee1f78a4d44cc792410f622b34286616932c9824b096d231a5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJL2563007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ee26eec033268bd20f1109cad7efd4fc1059f7841dfddaa48bef2b23ec5f1b. 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/TCAJL2563044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458319ff081fdf66c5d57368a4d8d20f1a71f2aa29840c47c10cf268072f1068. 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/TCAJL2563023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b830491d7f75a04dfa252d5c3cfb68fee5a098a91c6c5be1a55b7d94bb3882d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJM2515498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc152e96f75e2cd40d5debf78e49c305069e0d98a49bbeec44770ebd1bc7013cb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJM2515545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a28643796e9991844e068b7f29a4b5537a0d5f70589a6c0049e30d4135379c7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:25:06Z), 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/TCAJM2515527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9bc753d3751c69a63211db4138614bcdfbef15b0fbebbff21f0b1938782a0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJM2515582.