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 0xbe555e2f7b06a5f444c82cb1ec8b075caf05069d33aeea6a47657da5fa796137. 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/e5dcc46d-dfc5-4d6a-b7ee-8271e6f28f93.json and https://artists.proofprofile.net/proofs/artist/e5dcc46d-dfc5-4d6a-b7ee-8271e6f28f93.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 0xba88492ddd3e9634bb60a6222cefb8f4165a5de6e0d15517750d2fd2824355c4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAIB2413648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d201a334add1ba3e6e305c2395ac8e1c4e187c48f6d7f44f538b476fa89823. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCAIB2413689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5d82dc06ff3f2a4d33eacf12f0e3ff519e241e9d0e78fce11f430dcbc30b8d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAIB2413742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2e438b48d4e4dbed5bf8216cc6dd570db06ea96b3a80bceba4eb3a69027357. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIB2413753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a0b6a91348c8a51448921c01903c263d60cb8ba79ce853b02733f9e3447d9f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAIB2413773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3a9ed96e732843de5dd0a7b441c7f5d21a45fb996efcff29c140b3900fa3d1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:24Z), 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/TCAIB2413803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775dab54eedb0803bcd155de39c9b30d1d534a93b5b31119d880462d13c4b26. 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/TCAIB2413814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8d80b0b866f4f874301427c7e3d541a8682327dae18e9944242ede99f13e3e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCAIB2413820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931d5f198b13df42e099fd7ad902d61519b58d6a7ccdd594bc784fde15d11ec8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAIB2418506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0915d640709d8d573e0187585b1a004cf923a74bf126d40a9fe4dff0549a12ad. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/TCAIB2418520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c6db05118f90a9140e52da4ec0fff5bc9b3559f3e4f8a565a4258a1dbdf1be. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAIB2418533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324395edae1ffa5e26d38cc7c158235361ba3b7cda04128c6587b322708ea8a4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIB2418578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399a7e9ab1ca0236e5502ed63b54e69bc842995c66abae74d0b968b5a4b4865d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAIB2418204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad6b999ea7d90af20849a1c539d64dd1f6ac30f3b9de80c7a9e5a7fb3d8b51d. 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/TCAIB2418250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32940736c6e291b66367ff5ae25e4019849379574cc33f57613264cbdd39e34. 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/TCAIB2418256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11308f9e1fba3986164098436f68223724807ab91c8f4ad807143ccb03a781bb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAIB2418276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a2910bc150369a30f42aa3bcfd259363ca4fc7408f31edc8e965f5d576aeb7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIB2418315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77156b4bf271fc9fc05c64297fb3a3d8863c632c3bd06b258acdb43739494c99. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:58:08Z), 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/TCAIB2418362.