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 0x6a5c4147811f0a259edb81186906a8928aca4e9af32c997e38690305fc169428. 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/b2a26a6f-1fe0-4bc5-80cf-f00016fd6fab.json and https://artists.proofprofile.net/proofs/artist/b2a26a6f-1fe0-4bc5-80cf-f00016fd6fab.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 0xfda4196823b22b72709d1e27b4f640c7fd270b0a35f3576acc16ebc05652e1c9. 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/DECZ42200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bf502b96339f844e4f7de0c0680891419e5e155d8c36a81bfc12fd6aacffcf. 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/DECZ42200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b129bf44fe63def224bfe0ec8155d22b50ec0f52e9ee047cd3493cdd212d5a3. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:57:36Z), 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/DECZ42200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eb68eb92763cda4dab5c68b5ff8c7069120bad8c109b70e8e4ab2db000ccfc. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DECZ42200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fef2891f5a99aac3e058a1003fb5e9d904b5719d545930bc3335661d939738. 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/DECZ42200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501abd881a9a954c2bcb20e14cc33912197089dfb87cb21d002e2a6cd9636cd0. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:58Z), 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/DECZ42200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe00c14d3916b1e555e5fb9964e39ac1fbf3e022ef2fed18abc0d7c9724e82bd. 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/DECZ42200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49437d957e6c9196255228d0315766e44a78958987d8193be3bba3e37d50df7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:45Z), 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/DECZ42200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a78e56677962fb34ccaeec7a91de9469ae1f3a0cf2154029760364f4a50eb4. 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/DECZ42200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63bb17a2ca92e9447677fb106a00f482fabe9d9b945dae2bdf67bce98a176a2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DECZ42200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13674c28a5e7e8a8a0ce0f7417259c97789d9039ded3ada566696454887542. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:54:25Z), 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/DECZ42200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa80bb2567f3d89e52f6a0369015bd7ea25dd0561fc9194d55b99e7166a3be. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:17Z), 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/DECZ42200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3175a90ab3192b3986cb1e2571416dba0387dd379a7acc57982eda1aff746ec6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DECZ42200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da5ff02790417a10f35df5714ffe8b0e5e256dde29affaccbfcab032bf97e3e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:01Z), 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/DECZ42200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816033e2bc12769db0e41edcf9356ecb71ee8db16553a9c5a9d10b6b0393c0c9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DECZ42200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad96bf1aa78445ee7da6288a313b76a4b8b80cb730c449ae28864018c3d6250. 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/DECZ42200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c51084d163a182410c528f7d9e1dbaace2c0d1482f0be1d4506901778199310. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:50Z), 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/DECZ42200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71924c7dafefc60421d64973607202d3ca8e9c5ab898e5954888eb9fcfce6f23. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DECZ42200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa727a436c8c9f7e59c5b2b2d00c0bed597cf56cd150e6e8e7c00124421f5832. 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/DECZ42200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaee9046ade88e9a083510257aed2cf6bd2a3fad1c5369ccaa8163d1a6633239. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DECZ42200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf53ac8ebc14e36eb9081deb5346a9cf56ed78af11a74827b7d3b15314fb362. 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/DECZ42200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6f4e991dd2523da9cce5aaa282a8261545bd9506cb03df0367505e5fb568a. 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/DECZ42200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9f75757fb294d49bed38b02ad29f5097452f77f9be27e4935e2b55487ec8e5. 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/DECZ42200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d19ded35eb4c497c6daaecc7c57f28562794f0c210a623db6ed5c25931c67. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:42:52Z), 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/DECZ42200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a44b1004ee3dfe274cdc2dc38c74cff8d89411b523c6e4c0cb96517f63f82b5. 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/DECZ42200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d16fa57ec924b76bc0fab4370ebca2fe1175bebafe6aa8378be4736f236a6b8. 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/DECZ42200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a0fc631935ac0943e336e0732710c4f201df26fd392c2480a8136fac38a65. 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/DECZ42200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc716a6722b8ba0fdb8b5ae0707e91c4f2f966613066eb5089af84f5f14b12c2f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:20:45Z), 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/DECZ42200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1b4021aca2f597433ed5f9c1b118565dcfcd084c77184851134d57d2661304. 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/DECZ42200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90aaaeb3ee470d8616641f83ff2a875f25c953d94fc17a5b3c2c401c2867e60. 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/DECZ42200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786b31ff186f749baa8e7fb62cd06909f7f2d9e4d38d2d32f1598a58b2f757e4. 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/DECZ42200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d41e76f8f7c7bc6864aebc1651395a8113127609a0f23ef1f3f5eb34321d4. 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/DECZ42200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc19187d588bd37f219d8a14ab632f35a18c3281cf6083f04ede2fe13a0691d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DECZ42200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bd30339f44f66e977a0bb59f86d61f04075904d963424de59d5739619eb41e. 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/DECZ42400035.