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 0xdb2fbf1602b08f150f8648ceef2513ee82e109302861647192e21daaf05b6c1f. 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/875c57db-49db-4531-b6dc-45fa281fbf1f.json and https://artists.proofprofile.net/proofs/artist/875c57db-49db-4531-b6dc-45fa281fbf1f.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 0x778d9c569689bde927bcd7b4d2d14b937142901e76f7c8412731122b5ad095a1. 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/FR2X41670285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeac556a62393c6fd9dbdef4d1a8555cc0876a17caf1d9c39737359bf0a2e13. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA072492275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68a5136b8419c5687d21b24771138ffd7a861ce6af6fd49b512c4522e2c02e6. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:44Z), 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/FR2X41670283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1f7b20468ac99efbb2a605dab1dc5724ce4e6bd5d490e33e733ce60bb022be. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA072483839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0853d269ed4b274517de286990f3bc1f2455ec45a4c0b738d546d1f3a6830b7. 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/FR2X41686052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c979bf1ca4b82b85a7c21f420fd19a5e62bf92320b75a6e3cb5b1f921f4163c. 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/FR59R1611652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cc9daa4828ef6f7c0940b110e4c727100de3490bcab9cde6282a223333ebe9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR59R1611650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6e17679acf71df983a12d87723e0ce9d9d208cbc4b4b341089b2332367612. 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/FR59R1614096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48b436e3be4badd6975cc663841c1b52a2e1fa2fa1840093684b1991fcaf778. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:40:55Z), 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/FRX872457513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2006e541add5e4eb3accfe56dfb7dbc033feffa7ee6828923eba872583c7612d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:14Z), 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/DGA092471054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f2503a9f851f5e71516f230c7b10d5a8b49ca2b2cfb6dc9853542e81455315. 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/RUB521215906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dda407a084b837f7d7196b2aa96b1d14d9fb0f79fcb93db47bb8e3741b5211. 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/DGA092409578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb295f6453f77761ecb098523ad1f1fe4b2e968bd252ec7581bdd61d1686dbe2f. 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/DGA092409580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb80a86c4661be7f6fa4c0354dc274fd5650bdf99ab8a2a6b8503aee4abbc5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA092409606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8165594717806f98804fb4fbb0812604d615aad5489b2e5f6beff0733f3ba16b. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/DGA082479328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8096950a59fbc93b2e000a77932a89c39aee008094751ed0ba305d0e3d903b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA082479330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42816e0db5cbf683c95fca627182d15a8203ab931e4ffe02a99c862ced2765e6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA082479340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53620d873e84b669d9d75902b28e3c5fc15e384dcc5bd0917e2fd9ee2dd5d29d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA082479358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f3d1dc99a7b5a2dc16a03c27cd2dc18687a64da3ed06d67c9719e238acab9f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX282393923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb81c8c3f5b924a949059b722fdc562f0fa58c16b636edb3104cca1640931db. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:48Z), 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/DGA0P2378361.