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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076f2163dbfc61d71836a4a5db337e623c8512511e7c9ec349d124b9a46fbca. 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/325a0075-8887-43fa-9848-d96527e4b6b8.json and https://artists.proofprofile.net/proofs/artist/325a0075-8887-43fa-9848-d96527e4b6b8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7622ca71a1edd2c60876c16fbfb8f05b9039575c975848c8f8fccae5e224bc6. 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/GBLV62304184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f36d7104691b7eed2e41b6cc930a4113fcda2a877530ac1179783fe40c58e9. 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/GBKQU2349171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db21959815328d7184f1d110855ca49abeb47e022b4b4698d34328b5b4b6b42. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKA972200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ad6b00f0c2a4e36410776021c1da63021219241f9627c30c31eb5ec3d775a. 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/CA5KR2416068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b36ceca83eaf1a3ce3ca5bf651a53820c1c6caf8fe7773fde1ea5531c3dddd7. 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/GBRKQ2404024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8bfdebe91271b2ad9ccad4c8115aa8214e954d9decbefdd199d41ca5cd5a3d. 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/NLM5S2201682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e600de7d1f69a19bee256eecb05f35bd5b1a6ff92b454bc06a75a2133d20a1. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLT2H2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908923637843cc7ed8cbcad2985a6858ff3f52e271495ddc0476adf18235628a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMBZ92251833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3015a02eaa13f141f1278ec6f8476c30183a6268505f9eabbd13817eefe34bf5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLQ8D2201237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163b33d61257207e1b81c9fa793dd5dfedceb177f40a3d92d986238d95ecee3. 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/USDM32462001.
Coming Alive (Tritonia 414) - Jeffrey Sutorius Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef82c94f8a6e359bab4bb49c81b2df75f273e27ca506546255f4c9e688b4f7b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2313221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf062e81d3fd42964e5d6b8c2998bc7e3548c39c9186b1dee5b0f633a10e9bb04. 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/NLZ8V1801032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9cf17b4131b4348990c3f033fd693b861035aa5798090c241420a55a2c6d81. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BR9T62100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4029ccb4b04ee613d57c0a79053cfaea76c59a34e0d18357295aac13fb174a96. 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/NLQ8D2102132.