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 0xa705affea1dd7346e3e1bcbe0b3f2d041b988af23a923260501f1999ec55aca6. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f129264-436e-42a1-bc2e-33879f48684b.json and https://artists.proofprofile.net/proofs/artist/0f129264-436e-42a1-bc2e-33879f48684b.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 0x693c9a13490eda85103ba5b06e70e065d0bbaea2e7001acfb4cbc8dcfab7abee. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZEC2459830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2508a20aeb7d1dbf1715f4859b92754d88984d9e34b4102bc278a57135d2fff. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZZEC2459832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa03c947292e8dbaa59ff6dfe5f193b3359af37f5ed4bef1b65900aa635d866. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:10Z), 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/QZZEC2459834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158059969f196fc62dabbf100704eed78e1e1c4e2159bbb287bcd09bf09f24c7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZZEC2459836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf434b0c1ccce9eb8370296d78621b93b6c573664a1c38b77a0111543e8efa90. 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/QZZEC2459837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df7a319f5a06536e905596ceccb14d4e3199813ed4a7788b84269e958dc4f5e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZEC2474251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98592db8f661b3b9ed028c508d78b35fa20ef7dc86f1cb49d7c4ec2896f4dfde. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:45Z), 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/QZZEC2474255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d9de24458233724ed202b7f069427ab6474f745cfd570810b15633fdb3bff0. 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/QZ5FN2549457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5062a8ba4881ce60d2494230a25d436debb5d043daeb67eae3f62daa672bcaa. 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/QZ5FN2549459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7628e6f0862fa2dd67bc1238babe2c529a32d5e56df97498077e5d89accf7cc3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:38Z), 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/QZ5FN2549465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a0e25318932466e228eb7e65aa7d94e569f2322151bb39f6f3cb1c4d3f8a33. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZ5FN2596498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de3bfb6bd85789d971b5c1c402d2327c72296b48dba334a9abe8dd59f3c0206. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:27:49Z), 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/QZ5FN2596501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3d4a281b1225c481dcda2b9cca69852865df4a16e41fea42e7af2c88c5ceb4. 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/QZ5FN2596502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12246b5f355fc6da063cfeffbce6679270b10966b162453d49c94ee9f338836b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ5FN2596503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0bbb5a74f92c9105d3703f432ae942302f71fabda4da1a95249590cc3ab379. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:38Z), 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/QZ5FN2596504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402117f8952c53ce1806ac053a2c799597110dc65c6f8d82edb969e57e2430d5. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:18Z), 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/USLZJ2536650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe381a1161e3b8400d337df1e01a64db737c314b91203e3ca8011c1c03882a5fc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLZJ2536651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06184cfce557f068c4a0c1aa1182db5ef9295e3d2b8d1d7c8e7b14c238992dea. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USLZJ2536652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e26985f5d24376932239997e1886f7fb85a476bb29d7fd3bf7a3aa948b1d04f. 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/USLZJ2536653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f0795015b8d0b2e50070c05e407ef0d1ce2310c43d4ad3b5db08b2533fb63a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USLZJ2536654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aa884bae58c4fff02b141c8028063300ea1c6a802e3e06c1160a6be4838953. 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/USLZJ2536656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d7c90e4e37a2f50d686b03240f696c1158f3f00859e0d3ba9bfa2439c9634c. 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/USLZJ2536657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d0513cb242acae2ef9e93f856081bcbb8a60721e172b716101ab03bf51e67c. 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/USLZJ2568744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecc76848e255a927ea27c368641c42348adda788966d83c592a6087c5f016a2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:33Z), 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/USLZJ2568746.