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 0xd9f6ba04410dcdfdc335009be7b8a2e5fd8325bdb93e2553e40a3873895c5b8f. 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/5238e5d9-5bcb-48fe-a802-6d311361d63d.json and https://artists.proofprofile.net/proofs/artist/5238e5d9-5bcb-48fe-a802-6d311361d63d.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 0x47c84d39e09c148ea76372d8fb07f844a7df5cbcf2a0f962cf6f907aa4f06e48. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/RUA3R2134470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a4f0328390394fb5049bde3d03da8613a0706e9e03b65c92282a753ac55e5. 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/RUA3R2134471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bda23b5fabddc42f00eedc74c9928ef35af390b6ffa75ab221f6d1d8c568748. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUA3R2135503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb9c79652060a40504ebe6bf7ce44c38a11cba5d9826afeb03e0d276e825aca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:18Z), 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/RUA3R2139102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdc09e89b67f74ba08a0e926dd1e08ea1b5b22b4a461a3a499350deeb03f31f. 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/RUA3R2139105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bda73ebf430b66c2eff69f974ed42361b351ec31aef55ac3c46870c30f638c7. 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/RUA3R2139106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f1f4c1f752ef619b5190c5f4bd93922ec0f0b30ab243352342bd6ef543840b. 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/RUA3R2146531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4245eebbe87a468007530e56a26d65ce6569fbce3b71146b94060c33e6693292. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/RUA3R2147147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277e6aeeb1e122b0136d6b788e1c2654996ba693ac11531a671a2e1de2820d51. 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/RUA3R2151912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf48c6a2d8e6df0df572f9579fea749cb836653978e584573458f1ac9b05a90. 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/RUA3R2152303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118d7b39d2c968fc090a43eb615e6620a1c94eb83d3f3221cf04dc82d9d4d56. 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/RUA3R2162677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd114b5d8649cd6fee82c29a3c71971b532849353f341738f4c690262ee00b2. 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/RUA3R2172584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cd4ddd01054414d12995735121653aff9cc80c16b707854725c9053f0c0205. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUA3R2174938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3715782157b9f81939ef252329b7953660ee11134215c63c3c10a8d962c2f0cf. 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/RUA3R2178026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a9467c47345afd6f66633db5e3135345a12c682e6516946ee6d9dce6d6cb03. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/RUA3R2180186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eed8a191593b5a1c7ee6d1ea738bc1a294c4b95e5b17b41e988dd76d9f1c21. 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/RUA3R2180383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b253bd1ad93e381a6cb9d072f42383b38cc22d09270207af0bdb81c16636a. 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/RUA3R2180872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605d9aa4d89477397275b93122b6f05a97e93e77cba33ea9d7088fd41f416e10. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:49:49Z), 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/RUA3R2181269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0871fce5a955fdcf72c91d5f7759d94ec8d894de032b66db9d2a04f18fb0b511. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:22:04Z), 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/RUA3R2181949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e4d85b95143d9a86a560ed1ada94a36d49a0e58bc00fae4e8e6893a2d4e7f0. 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/RUA1D2539156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b076364c7a65dc3aa6e9daa180858f4970cbf300565ebbc09ce5cde2040f7e. 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/RUA1D2539157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71876170c3eb3285a572303d759830fb194d50fd751df267be67c67a420f3dd4. 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/RUA1D2548219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0602618bb5c6bfcd8efbd4050201417d5a3d120e8fc97036eb692a2280eb4a5e. 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/RUA1D2547270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc983bc62662dfcb6a1c11e3e746fa6e8ee38eb424623dfc26f9477aa87aedd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:55Z), 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/RUA3R2183551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a710d41e4ca0fde6429b19578f4fa51ced086a14d27a2c68eca8ca522d68a0. 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/RUA1D2578052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a114f713b4a58b7913c8cd403ab31513e18b303ffc22c38495e96a43b4a1acc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA1D2586146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b09f10efcde764bb1885a46514fd79e7b30944d89f14e48df85e6c2d3c276. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RUAGT2532058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7ac36f18bceda42813ae48b1b47a439b2e6c110a3b8a62ecca813c5dfe567. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA3R2187515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f125e20e00de22b3007ac619cef65dc1c2f6612bdcd5cc195f92fd9e959c09f. 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/RUAGT2559358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1919f21d0e86efc551f6e238d400ac32bc76284b63d176a4db457908f6c2ad08. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:40Z), 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/AEA2M2526839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc97c7fcaeeb37c9a5367705d5b430ac2d3829b67198fd2d38f189a67cd21f8a. 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/RUAGT2569075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a35015ae9a27cd0456116fcad388da86c8cbb376846ed567a54b3e70beece6. 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/RUA3R2188384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389cf45ca70291933d6c53769a43c05da5ee8e540008683e3f6eb48178013ac5. 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/RUAGT2582745.