1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5607f6cbdabac5eb0fd094c13e101cd705060eb644e2ecd8d0b162a11ac25737. 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/13f91366-d3ff-47dc-aa22-ed1696c94e08.json and https://artists.proofprofile.net/proofs/artist/13f91366-d3ff-47dc-aa22-ed1696c94e08.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 → block OTSBitcoinBlock must exist at that height 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 0xdee66db1c8889378a12e9dc2a0a9e465ba9037e1be80070913dd6d36cc542bdd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEWE31900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf627c8f5a63ee54b8ef2f886425ae947bc5dca9b121b05123d4f93336956ab1e. 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/DEWE31900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742adf20cd5c4329c3af9b70bacbae498c0568dfade01498c9373190cbabc066. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:23:47Z), 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/DEWE32000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccd807f90d208d831ce911fff986aee0f323360ac0eb94de239142c8be2bd4c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEWE32000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49015b9bac74e8ee8ce163c1ed0eb7c0c30ecb75498a158bf83e2188367b92e1. 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/DEWE32000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e459eb6e886a12a878f1066f180a73c76052017aa5bf2184d00b9a6c638b5a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/DEWE32000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa68a0bc2649ec18f3a7c7790d0fd219dc28a4137bc50182b59a96051d9fdff. 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/DEWE32000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd6986aed1e0158b9ae1b17c74c2271ccdf18b315eb6592cc31d46425734146. 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/DEWE32000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fd012bea177f89e0915174ee3e1a55bfccd8709197c2bdc61f0abd76f5683d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEWE32100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c73f033b5846d38d518404d28b5e808efc56c68b0e6b57d3b9177c053c1935. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEWE32100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb6b04454c7bdd9b6da176fc6e8f208cd042dac9073745a16761730d5e4146. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEWE32100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa3d7712aae74203554c3924a9e3de16c38ce71bdde44dcd1c52abb8706f38. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEWE32100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbf17be21f1a42e3a4dc191a00cb6eb74c1eea2d3cb7b25d00fcc1fa533e462. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEWE32100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932a75898f5cd73020c65f462d9420bdce6cf178e34e9c536c47fd4d14d395c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEWE32100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b313c45a5cc82e484afd49712a8a93f722f9b1296e6ab79733baded9ddd847. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEWE32100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239ab506755c0ddb1b787ab3f63a7a5d7b6dd2eeca67126ff3a20a978e16fcdf. 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/DEWE32100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d4f8a8142d3601a6e66886de004d25f963ecd8f2c06b6862c2b9aafd444277. 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/DEWE32100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a62472497172075f8019b6858f16b0d395fa6adf1e97d6dc2b8f4174bef43d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEWE32100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bdfca41935ad988fe9193078c8eddf14a9fa4a4ae819a386bc4842438a823d. 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/DEWE32100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf65dab17b66a10f360e1a0386a5df9618462ef139129a2886fa25d6245d17e. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEWE32100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd700cb7a0a87c6e6fede24a87fda602b74d4ba9c92c6e85affa5625907d519b5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEWE32300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea364f0eb7bc4b81e9f4762e66d42d5b32e9e35c33c6fd302d4744f268eca560. 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/DEWE32300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb415bf89d7d5ce0e91a9f862e0cc7a255b0c6b9c4ee4c952dc3c63db9a0a2b5. 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/DEWE32300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883a27ed889817ae8d8631e4cfa37c4d3bb3bfe3f9a22cb8ccadb598e6c2ee0a. 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/DEWE32100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a3a62196a706f59da59ec1b6bd72c1b30f559865bdbb07c9eac0977aecd02. 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/DEWE32200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc0b6bdfb359b74e3b83409eb5d721a697076c3c63afa32ec5c755042f22130. 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/DEWE32300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9b453ddfa7b4a786d0ac5c8d910bb0fff6c442cf23a35ea8219879a1f4bd6b. 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/DEWE32300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2db6f7bc0333dbe6fea51a509ea1155ba61622d3337b135be28d68e0c2d81f. 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/DEWE32300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8691a5552d33f732b46380e3fecebedf522a6bdae28ed4fe5081a4b34cac1c. 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/DEWE32300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574d24c7654845d9c34c6e86e3f691785f118eab343df44193d796b9451998c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEWE32400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf888519bdeaf639d1e66658ed6fd9b0c53f38e57c5c08c6b11a49c12065f8130. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEWE32200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d279851d02056cc81ecbd91a56ac0793af7f40ce8f5a0715cd9e1c9f58b35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62458360.