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 0x01070b610c1ed9a3647d0930fc2107888c38b6b53a2f4c430cd40156e59ea17b. 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/893ef983-2d78-4e52-9141-f7570279f4aa.json and https://artists.proofprofile.net/proofs/artist/893ef983-2d78-4e52-9141-f7570279f4aa.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 0xdc970c2c87956e8f381997782f4eea03d7e2c6916ea7091b1fc57410aba63fa1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBSMU5532996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789225b003cc3893ef06d22b7c5086e6b3cf32b35e275066f6b35474d1615bb5. 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/GBSMU5533010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff402dfdbbb6ade0ca3e360061251b77853ed89c6ec1bfa9ff5a738deea111. 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/GBSMU9222423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eba2bfdacbaac99c7fb73b5d6d917446e83725a94b6f9edd4649556a9ca3da. 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/GBSMU9222161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140596dd17f02ecbe17a2337d1900c4513e94f46614c3054dca04c0dfafba791. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBSMU9222164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8816ef0a5ee061ac34decfedac71f148344a55bbe1f2268714fc0dd1cf865443. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GX5MY2190509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd019191d0b1bf2275e0e9eb836cf2a95c155d802cb2c32914b63b8ee9b9d90f9. 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/GX5MY2190513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c24cdd245a6a6ae8b0a0fb694f35e76aaa64ef2268b5cba823255b29e58ebab. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:59Z), 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/GX5MY2190517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bd50a27b58accb69dbbeecf1eed4366471d65662ee4cf87c630353c7d40b9e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:05Z), 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/GX5MY2264273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2aa1f2400216baea5f48d0ef4dd00424742f176cd5b56ede2b7e72bd35576. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GX5MY2264274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c447893aadecf1241d38cdc7c13691539c7cf1325936a467256815688d3e16b. 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/GX5MY2264279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42061e6a849251de03cfa24b73680493587bfc7e3f207da48ad10230046993d3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX89G2424665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6584f5179b93c9886fd51aca42ea7165440393a8bfb4ad7e1156cf5bdfb6bb9. 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/GX89G2424658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b2b5a02f120cfb9d6c0a04eb0bb3ffbc23e75e3222b638ea6260ac77be7186. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:47:29Z), 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/GX89G2464265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024e8260900e24d53efaef2f96354ffa3c5711f5d44c2478e510814a49fbfb5. 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/GX89G2407204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5481d974ca9f9d01e9b2feeb97b631ad6493823b9ab0a1ef2a7455328f2ae6d6. 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/GX89G2446376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfad164d5c8cc5aab59038dc0e85c57bf26f1fa13c01fa52da6cec607b566c7d. 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/GX89G2424310.