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 0x263db4d4d98b995f0ac2a4433dcebf94dbd47366da9bcdadc7b5a3152ec9ef85. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea7a8986-f920-4b93-8ad0-b2d12f4c1e9f.json and https://artists.proofprofile.net/proofs/artist/ea7a8986-f920-4b93-8ad0-b2d12f4c1e9f.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 0x7be9be91b0bf55eef2ac3b06eeaac6132b71a2370907b671c28893e5e3a9fa5a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:48Z), 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/DED792115127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9216138b2b2e94e641dd77ed63551c0471cdfd8e50b60d29648089419d144bc2. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:25:23Z), 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/DED792115128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed16cdcc7a04388162f24da52e6db0825cfcdec90fe26ff60ec77ce59aa0d7d7. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DED792115136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32412472f88f224a2b77c8f8fc6dab1ca5ec4283d30a7a5638e85ab9db71cf. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:01Z), 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/DED792115151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e3d502d161574e0b3350b4ec21e38bb9c57670ba1b9b6ffe0529127e31aded. 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/DED792115091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d363dc1ddd0573a89393f289c4a631f28607510d3876fcfa10e14bde3927bc. 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/DED792115092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702020c6dc58a0f6e8681ceaadfaa61c8319aa6a8712a8dbad01e3fbb844f715. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DED792115093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1bfdd90d761e142c574039305169d0a9071413cc2d7b76f08fcb9296ca36a9. 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/DED792115094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653ed2c0c425fd2ffa594fb344b920b30a8c6e49ce06d9fd3134b9774f7f4514. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DED792115095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab8a590fc477d82fbcaa3fb20c5da80d735d68cfaefb4cca7c294c9eccf4f8. 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/DED792115096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72704b894e7949b5a8d2f72f092d1ddee82d53cfd768c9201475860bdfc26b90. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DED792115097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccafc067a3bc2de844052a74b797cd7846b7c6185e7ee0b016bdd245d837e10. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DED792115098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dad54434fbae7ce82e21438cfc204c31390e8b418f87fcba66397cc49cc2c0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DED792115099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ee23ecbdc0cdb1fa1822cd7acfac7403f64fb5d76db51ac5b64fd726153a52. 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/DED792115100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4ab1112feca160ca4ee1a8faa2c08074e299e29e109d121ad4e42b77e3007b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DED792115101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98339b74447821c729de6cb1878cde86fdc5453fe75d581632f2f60d49b09b8. 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/DED792115102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e503a8b5e96739c6eb3b2ed5d573a40384110c807d5bbe28082d893c969f6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DED792115103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe618f3e6b23a2057a8b25a9277a2520ecc85611c96a549c4cd40bee502061e24. 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/DED792115104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf9ab9ce4d19dd5052f08c0e6193ecdcac9fc7417101ca2c8eef866091d057b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:32Z), 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/DED792115105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6981768d6e17c3494f2c4af99aa062ed6beb83b4d96a07a6556071f3b5fe652e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:54:48Z), 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/DED792115106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7d6aa36de77f00e285afc8bf042b8c4d52d35053359710e8c0fe30d73a2e41. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DED792115107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a3a81dd319242eac4ca0ccb2e59430c40796e6c364ecb0f8655f1926f0bfb2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DED792115108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7328e99b8059dbe045254e2639b80e82f8b986bef531160a9b9cf9d2d180ab. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:53Z), 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/DED792115109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c4298f0b040d8c281f4b2dd212396483353ff6307fca15b2b50fbcec331a6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DED792115110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5012b7a676d6952f720adf0a11135055bccf885c45ec716f45b801360de7ce2d. 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/DED792115111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8be963c568de502c5db5bb17a8f0e71615bbd0a16dae5c465ca5fe424ea9c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DED792115112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2f171ea747fe672432671702105b4b23eb49bc1b67f4d53beb30c63f1f26b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:35Z), 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/DED792115113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dc2690da9f1948c5d14d0292e21d4d184e5fe55f136c2d819c57c0a2ac01f8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DED792115114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e187c58c25ec17654679f70ef45fc043906bb4412da2f1b386c7f5f7193aee. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:46Z), 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/DED792115115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e10bf94583396970be49c6afc8ccf2d93c42a8da5ec99dff256e38b4e6c024. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DED792115116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68006a8a378ec5304cfe6f4c7546359eb0d6c3ba640a3cc15ffaad5204ee080d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DED792115117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6331ba3b285cc6f8101a7d2c4337d02a93eb263c59194736976bd0f78f51e57. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:27Z), 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/DED792115118.