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 0x3ed06e6f82ab39158f86e1f808e0639f05cddafc4e989691e9acb75ff8de0ebe. 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/d7332818-4acd-4f05-8e08-286bf16d4026.json and https://artists.proofprofile.net/proofs/artist/d7332818-4acd-4f05-8e08-286bf16d4026.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 0x39713846a44384e3bbf529227661b3b553c9524d0b65f180ea4da982ee9e6146. 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/DEPI82442421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfac14596840a5ac83e5a745c9796ac661c4b57834a4c23822045ab96b4addb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:55Z), 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/DEPI82445788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31323ae3a05593b91a702ce726d9e0bff5cd729b5c0948714d44b51cca17972. 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/DEPI82445771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea20cd825e6359db2dca5bd4d2cba3e1383a28037b17c4b45f3f92f92ccc6156. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:10Z), 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/DEPI82445786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ed26aed278491530f124efaefdd50babf835559a6d215b4ecced3373c1ec3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEPI82445773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf777dce403f98cf7149f4ce35a60a37b790a663964813df0e61aa7738fe7d577. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:21Z), 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/DEPI82445787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d6451b9efb5edb1b1494ae6df1a7ac51be0aabf82979dd14c563af152ccf79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEPI82445884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b84177600d15c56ba9acf5add54114e6872a1de37f6b402f25a8ba08c21ad3. 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/DEPI82445882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928399d6bdf0602f4b21abd0c7467dbef19ea80ab8dfa15e51e706dbd52be9fe. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEPI82445887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb227781697e6a0484af2518841f333deec3983f8e3a77428f2dd4f8bc6d606ab. 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/DEPI82445883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359fbd4d60a19633d041ee6d60d28be4ece8912af898d45feb3ef9c4196aaa17. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEPI82445888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601d7a8829e5f6dca0a9f509dba291b50a2ff5c058dd4de40ea78f2fedf486e9. 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/DEPI82445924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa676bb3cbc42a3a27795c7572a43a4d98cb3b38d8aaf5ff924ec84f78f594ffe. 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/DEPI82445925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310bf955e17b5b2a83fcbcc75cd9634ce53d59eb7e941694c7587704b7ae47f7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:59Z), 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/DEPI82445890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a8297f1e811d6d04d632fbbfd41dab8c34b1905c31db668b76415993d97f8. 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/DEPI82445929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7dfa614af7b0f49f6f548a19bb32ced39faed88e157915e458f83d3a46315d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:50:48Z), 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/DEPI82445926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133896bf3b682a18ab8838457470c1d12d9a99dd776409835026054ca2e8dc9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEPI82445927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8417b667df249961f9601ee80320be956bfebb8b39db28b5c460aa29bd727. 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/DEPI82445928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf16f24224889c01e9bc0ebf897f091a86940f201b8b81a5c9458bfa93fc7d43. 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/DEPI82448500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf7b56a9e49696f0053491b0ef62e16b26fb063f6ba9bfc777f49e2790b7d50. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEPI82448505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9897a7d74902a55a5f3c84b935bec78da9bbf56e23801a92ae37020f3806fce8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEPI82448504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c5c65fd815c7911398fdc54a11ecb62b56f971baee663282a6fc743e202a32. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEPI82448506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc145346f1c41d365d972c52debe9d219e7b966842e9562c53ec408db38a569ef. 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/DEPI82448508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d29fe6697e44dd289f7918126f5b83acbc1aa9106d1ce602649a08b1230b13. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:42Z), 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/DEPI82448510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd967a9b0630383cddcaf87b2ff56e4969f1faf6139d4cc72afa3622e8070c. 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/DEPI82448507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d188198113783e89562123089effc151199d221126a7ede28755e61e0c3928f. 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/DEPI82448511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56ef3eaba2218d733ea741bfbe2a359e5149ef2165abb4d8914cdffbd7518bd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEPI82448635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f38b31274dcde5aaa0ee32b0ced8f5d54b5dbc23748ce298490b582a24733. 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/DEPI82448634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827b239636905feb58d3526c1cbbbadd5782cb7dc445d8e34efa04d7e5c72c49. 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/DEPI82448636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7728f3e2ef84bb604c400bd291153253f8eaaf5974a8b92a0701c489ca5e975d. 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/DEPI82448645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfade852468acf0dfaed876e5344b53718872e7cbbec587ad5278f4fc5609ccd. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DEPI82448637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5fc262a012561f9c3c8231828563eb540c55b201e34a1739b4a682bc4b2d9a. 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/DEPI82448644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7683bcd41963e24bc97514f54641ab4afe9046603dff4c034575d6cd38e86bd. 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/DEPI82448646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa4a7c69e267b8828c6a7eda1b1775ed2f3ac5f8b0326e566b4bc354b969ec. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:45Z), 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/DEPI82448647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef957bf8067a5c83ba826021063d5b2f107715dfbf6f0d99b89fcc017af7529. 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/DEPI82448648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa720cfa3df3a2833ccd632021085d43405b59c60360dc43924e2720529b17cb. 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/DEPI82448650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d4215e5258aad33c26306bb15ec4b78d5b8f697d0427244dad95f578ad8688. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:28:13Z), 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/DEPI82448652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4f4bfb3eeb39dff25640e4c480de9a518fa5bd5418981c423988851d8214d4. 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/DEPI82449547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25cbfd562d4f7f3447fe41827cbec9e37dc10812bcf75475a0054e230aefed3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEPI82448654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c5b950cf5eb390d39707a691de14ec0e9e2c0263a4c647f02d50d0daab7740. 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/DEPI82448655.