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 0xbb576909007f0e60cb07cade7fdfe6b99fcd9b69b9cf0925e29c9db5b007078a. 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/275433c2-501a-44a2-9a7d-bee3b793034b.json and https://artists.proofprofile.net/proofs/artist/275433c2-501a-44a2-9a7d-bee3b793034b.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 0xed1045f9f088c286c3c0da8568a6776bf381a76e6280c6f6557a3551ba57b2aa. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:15Z), 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/QZDA62097699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c81369c2debd7b6c5f558f7be4f503bc694c405d343d1d84cfffac03f0c1a6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:42Z), 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/QZDA62097701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d826a613e0142c48894e97c0beb45d613e38b05b8c486cf64a811681856b03f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US23A1556783.
Though it May be Mysterious, It is Still Beautiful.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84316b386792feb953aeea3deb69f0c5bfb369ce0ccc66d828391bc0ec894df. 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/US23A1556778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812b491899c8dc461dc065daed104fd340b20da7af4c2687c5b52aa8aeb6285. 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/US23A1561712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc012aba446598d56b9aabdb71d77d8f30fa3da8679a6c1e324b2a884f42095cf. 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/US23A1568079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1dd13358f37c0702a5834635a48ef6e2be2b51c07ad8cf92a13a32d80c759f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:08:08Z), 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/US23A1568082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf0e4ac8109ad5d39c43a6f56263cbfcff2ce251ea7e668f7e5f807ab0e8310. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US23A1568089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b205e6ba16ad65838ce9dde18ffa388fd09af06a5e800e1dc30680f3b99468. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEH742409626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186ec7579e803ae18066932239c775db9aa62ccd4679e5be96c50f3780554d5. 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/US23A1574149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4505a538363b27b55c100e04907c995bdc42b7785991b29d4e41c5584634d7e7. 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/US23A1574156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad18316150d4be74847f8d5dd604f89a9951a0fb8a9514c8b2c6cf6b041f9ca9. 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/US23A1590659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3518403538dc0269b703441a833aa9fc0f45c8f03ed4c918163710d3abd24c4d. 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/US23A1581678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58adacf041e062a33a18f73a5ceea1a8bd5a9ccbf7c1c04c57a7425bfb6083. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/US23A1591756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15472e9581143e9a6a54a97334ff7f1892b99396b69f060829fd9b130dc7c6f7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZPEW2531451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60977886410d809908b5a036178df1a61e5947e64a5610a9530f499b8f07d3c. 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/QZPEW2531452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e5fdc07de5faed42720a47bb40ea1e21c4a0b9a11f63a5b3f1f1dd47272c2e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/US23A1591759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645e803fa2ab3d2c20e9b96ffec86e8a9f14bc4441fba614d0343efc46ec81da. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/US23A1591768.