1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x964fd295c5b405da97f4c91dcc266265491188f8b3eb684d5c8df7e363f86479. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a1ee666-4a6d-4c5b-a7fa-dec2712b1e65.json and https://artists.proofprofile.net/proofs/artist/8a1ee666-4a6d-4c5b-a7fa-dec2712b1e65.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 → block OTSBitcoinBlock must exist at that height 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 0x1306978188efe2d8bf279c4aabb15a8266e1fa402d3a479b3d5e5853654acf83. 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/INS4L2101757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75965cdfb0b4355ca1de271f3d35e29ce7d3f0100cacd9df48c0c6e9077f39de. 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/FRX282157754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf983b2b7d8eb0b2cef040156101c1ff83b2b5a1a5c459dfe289c3779c277346. 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/INR1P2200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fda8518d5407b7435e80571c9a8931abbb6334d1f69eda0776133c501459e20. 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/INR1P2304220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc471b5ece82ccba07c0ffd2af4194cd57ea6b64863e886d8746988c3c0562a6. 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/INR1P2306544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e796cd932a446c396364a4b90de30cae21f7fea8fe62390a7c7937ea463d0c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:20Z), 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/DGA0S2401373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0395849f920d5d3a4df0ea0182a788712d0866a25f5b50f3c8d0da15f1bd33. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:17:06Z), 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/DGA0T2402820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465e046a3c4f169fb414ba4861351d6b0028454323a80d2d844c3ec7322e4fdd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR2X42500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac56d9c843cd62d0797d8c272735fa8a937dc852fff816901b3ef800a128296. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR96X2507507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b411280375ac2f5a6b25ef88e9f7e192f8534842f1b36e5ce34320b18b72d72. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:21Z), 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/FR96X2544049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc700bbcd442da7cc442f0b4ab713c53fdc87f772d0159e7286ba1b8cfc98cc20. 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/FR96X2576105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebb4d1726de247dff64dd52db09feb6985e6562242eabadd866fb25b0e9fb8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR96X2562639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fec97195114c2943d0362f7345ae28abbf7079a5dd62b3454d71f4d8d17872. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:37:06Z), 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/FRX872595869.