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 0x44512ea8ae294924121243336949cff9f8aa4cbb738c8ce504df7560acdc5463. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76370c84-45b5-4af1-8aa2-3b5a1ba3b583.json and https://artists.proofprofile.net/proofs/artist/76370c84-45b5-4af1-8aa2-3b5a1ba3b583.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 0x6ede3133bbbf3ae3912dfea38f00483ec0329a27685773f41f6a35c01fb80ed2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX5MX2239032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253c4a01d8e723393c90733bab95b684f11f44ddf24019d04daaadc47f232bcd. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GX5MX2239033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba5c49aa0158bcb3385616a9bcb9b14e60ff1e317088d839093139a8a0d94ff. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:03:24Z), 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/GX5MX2239034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf299022953c9c24cf7ac57723b339f24ff3b54c635cc8ad7a8143ea4b4ebc2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:30:42Z), 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/GX5MX2239037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c12549a759010dbcb11bbf1594f74c84fb9e1c615a1a9a2bb92a12ff210f2c8. 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/GX5MX2110569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63358441c0aa8c226e27313a962e4a9f006a8a97782e17cc50bf62b666e7c5a9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX5MX2110570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483844b17ef4f11cdb6feba2a0fc7a2eb75605b0b4dd7a54ff1c7abb1a36eed0. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:50Z), 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/GX5MX2110571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a524b5728309a323874a70666618a73ccc20768af2e6211370229d6e34a0b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX5MY2201657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d86a7fe6ddbb4381b50f2c78b81b8bf11a1b99fad4593a92ffb27ebcf6e066. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX5MY2232399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d676ba0a9003932506bebe78259ced85e996f9dcb2088207651eee46020d8b3. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX89G2219204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e44c21d6304c38ab22bb221e6dd9415da3f5db6354b97a0a54961e8479f286. 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/GX8KD2370384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9252e9c2f7be27f99f853dfaa87b89fc766e0b5eaae26c2e754ae8b85f4a9398. 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/GX8KD2352487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3412c140423c6c492ecd396d9216781ed1bfc9ff76baf75d0ef4f6de5c20308b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:26:05Z), 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/IL6652305740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5418f9677b12673648607725344e7342e5d098c8c2d294fc1daf78bdb3e59536. 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/GX8LE2387633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae3b0fa0fbbebf07524aa81bf9334b6101a7170da5bc0c33e705365b30447b9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:59:27Z), 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/GX5MY2374433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd2d5b13556ded7fa2792288911bddb53075a0a6dc7e1c272b8dc0f765e82a. 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/GX5MY2357640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cb89d77874ffee61144aa4c85ec33814b01a7d9054771ed5f0f6af9f0b495e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX89G2419647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4f6e5e5ad23b696ab1912f1f40ac1fb0b0848244dcca67c56ab8ea92f51a5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/IL6652308093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffca87fe2ec06326a8654c2b427d821dac5a6622f9e85c92ae3e01047b5aab6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GXF972446898.