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 0x2a953592f7f1bef99ccc7d97cc87800c5591753c4d3a8b106eaa9241951f9bdf. 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/4827a3e7-536b-4df6-9201-4722ddd72bb4.json and https://artists.proofprofile.net/proofs/artist/4827a3e7-536b-4df6-9201-4722ddd72bb4.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 0x5690263fdb4872788f8166db3f52de162f9d9fa226a8ccf3f86f54518d1c520b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:47Z), 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/TCAJJ2546057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7667c7c6796b7eb396575d9f39084c10114343ba3bb85dfc8ec84fb410ae0882. 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/TCAJJ2546061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3cd72aa5ed4ae8e4300dd73ff739ae9f36bff3b736d47ea81d64f9efb026ce. 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/TCAJJ2546067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14534f6bbc0a71fe57ac66f6d30ee289536ec5094dc20733ac1641f1b3b31a6. 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/TCAJJ2546076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc08ce2206b157e55f8551b4e2c04f920f32ff38f22e789b27f22eb595aacd2. 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/TCAJJ2546080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6b31e653a6ae0c9e6c2b74abfcf3a272b7b3d6cd4514892cdc0a98aa8b1a02. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCAJJ2546087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca712555c69c45de88f648b5877aef30a4ff6f0080aed0acd81414fa924ca196. 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/TCAJK2546098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c73a6e20e39c3fe3356e5840ce3868ed64b66a2da6a8079ab27be9e6ae6a8d7. 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/TCAJJ2546104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdde5505283043e144ffc882c7f567ec0c3a48e2ec3aa419dbca015cf7a23537. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJJ2546109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c84e0deed5326f5714e71a56339ecc369613ea91b9ed185ecdf73c6fadda06. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:25Z), 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/TCAJJ2546115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209bc8c78533b9ea661e5dc267d9fcc8cd38da82e33f7f8b9b6f5334b4c7cf3. 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/TCAJJ2546118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9fa288d06be01ae5b5646280b8860e85d84c41e8503e1217a430e64388a0b5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAJJ2546121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b38ef49073d3a973aaa1a90778bd5f7f4e5f536ace4dd13e9be2f276dae3008. 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/TCAJK2546125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033348258cf5dcc109182ffb82ae6567af5cc3a93d12ad5fb6bb55ddf4dba130. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAJJ2546132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf6ec5ccc9da6247d34d8ece28e059e89e98f774927b5d3af8ed8ce1c294d7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:46Z), 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/TCAJJ2546135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f480f8ac7ddf032f2b5e9781ebd6ae9809bbef8bd125eddf1ed0b078734c48. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:40:11Z), 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/TCAJJ2546141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc108857de9ed4b378593460c2d965dad40672cfc33833c9a4eefed2946c62db1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:50:48Z), 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/TCAJJ2546143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1dc89160ef5d8949ca8fe7b469e39e01e967dc06d51a8d48d10d44f14605ef. 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/TCAJJ2546146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108118c4fac0cf2e20a34b467c1f26ed6ca4545ab80007a205235c3a3f551f1. 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/USWL19000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d387aae844a82c42818a23c99bcf86b177428b75a3a6b0efd52de9d3dfbeb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USWL19000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1992693ce64782a98438cef1ac8636ee138a3f36d9d81975292edd79532e42. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USWL19000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97e76827f85fd14c6f945257e7f743dff01c3935f03e5abbccce9b311e30362. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USWL19000057.