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 0x10ae85c151831864512786c6a05876f36b9a7a68eca033310670540663dbd950. 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/0ccbe664-cf26-4bf0-ac64-86299c9eebb4.json and https://artists.proofprofile.net/proofs/artist/0ccbe664-cf26-4bf0-ac64-86299c9eebb4.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 0x1166a8f85ae6018aaef7b8565195aeb3ad6b58bb6bf85a8ea92509358ad8ff7e. 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/GX8LE2436662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376606e178e60804e60a1068dfa5b23812f6fd749abdca99ef3f17b25ccaf76. 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/GX8LE2460157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5851394d8e8fadfc3a6d0f58fbf1661cc73b304fc1e7b493e381c2b5aa8f47. 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/GX38U2454659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64020d3fbcc8971d3b2ab3e629454995aa8fdaf5a1cac405913518425c25cce. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GX3HH2496194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd355050ed7dc907722e38f88b376aed6821b34b89a24c27a7be3d7bcbc5f506. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:58Z), 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/GX38U2481750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1679922a42081d5eb5cfe90813d7f422fb102d4594930181a391d12bf4077105. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GX3HH2404224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd640dba0ee0a7be01bbfe6365b7b5be85678410377a2ed9fe6adb0f5487d0dcb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXBDS2449659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd163895f2c631e7451c087d85a1e3997e874d6ecdc8bdeebbd853b2c4378047b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GXBDS2427893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3288c964cdb5893d03c53733aeb2c4f1c4feb682326e13b7be70e4f283c81cfc. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:28Z), 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/GX5MY2419948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58cbae14105938e71d2cf1613df49d092207b0e0571d84f285198bb5242136a. 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/GXESV2423494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada1511608ccd024a4039d0ef9e368ae2feb7419bc68ec2dec064c6bf6492336. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GXESV2467546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2459801dd14028168bd426cad457d3f4d9e11afd936e65b97b7eaf5b01d195fc. 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/GXBDT2480344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796cef68d1153f3939354f90dc9297bfb4e6ea2e71375c1269cd7325391f11ef. 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/GXBDT2407125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6f11fab2613095d29976ef08d03a39060ce1462286241fbba44804a4f1b3fb. 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/GX8KD2520831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b4e7160c9dc68c8db14c8c19985693dd81a0a28a4f249efb39b60524b1c305. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:51Z), 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/GX8KD2592424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e142432bb480e72856e3e1d14d77f8aa25418165951fa4a73bc669c01a560b7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:03Z), 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/GX3HH2560779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d00d61bbd67a8e33f429ab14c0db4c83f3417af43a39173202d71149f0b043. 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/GX4R52555062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a43479f75304d39b8d2d592c74497cbc8a20f2c6a9df4ed98834dfad8a4753. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GXBDS2556403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc53207f97184c66a56612e311347439a5942e6a9dd2d2843ade5689e233656. 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/GX8KD2248638.