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 0x009028cb2cd0663395686466fa9a567ca7c30b363445976e90c11c838842b4aa. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81b5d15b-bab6-45cf-a046-1b4bcf3d97e3.json and https://artists.proofprofile.net/proofs/artist/81b5d15b-bab6-45cf-a046-1b4bcf3d97e3.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 0xf731df4c6b68e383b7eb573d32aa1de4b96766a4d3975e333a7c15a04abda93f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH2599635.
The First Rays of Sunshine After the Storm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbffd1d4466f70fd3baf5bd4086f3199e3356bd5558b3e3b1d42f471425965a. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USCGH2599636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe533dd9d4fd51fa031a1d14cf92bedc70dc1cc2c98285acd25465a29ea7467b3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USCGH2599637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a67c002cb854f4f543d8ecabc78cd578af6bcdf1908b0852ed90b0de197c9b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USCGH2599638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0be77c60e1a21100d769ba75d644c9a0ee4c44d505779c055452e862457f4c. 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/USCGH2599639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7cd0215f6f5961f76dddd9bda2555faee66aceb247c77a24ded1fff8c6b2bf. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USCGJ2593801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3118b9e1a597cb083a4e13a068daa4c86ecaf3ab049317a457e923a084c308a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USCGJ2593802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a4a53c94f5ed0b666300be2e79fb6df5797bd14cd77478e05ef301e345b637. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USCGJ2593803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb419ad8cab00bb7145da1b90a12c348f2342241ae1d8a1336e75c11baa39a287. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:06Z), 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/USCGJ2593804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17645e128e66595cb12dfafb3c8a0ce7232ae0a45337ed8722161ebd8148f4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USCGJ2593805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e58888b751d20b916c9894667317f934beefa8dab0536206686d71cf96417a8. 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/USCGJ2593807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ecae7912dfe40ae85b81f20cdcb6b1afcd5bb70e2b7ac5862d8536f5ffa38d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJR2511923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bceb9dcbc0fffc3cbe674481bd11d5a19ebf33544fd5d4f4df9ca25913c2b9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJS2511928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c22b0601e716b422bc56308f187c7826a0602efc170579caa534953abd21a9e. 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/TCAJR2511939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ea1bba161be601ced40068266d3e161174d314005f084e239c76b3c82f103f. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCAJS2511945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bdc997af390eedf93fcd401d994ba5d24fc0190cd395119b4824436ca684e4. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/TCAJR2511948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913043c06792054afa4060f1cba7278158bcd60107714960bdfbfbc070d350c6. 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/TCAJR2511956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20719fe745d8af059df25be741898b16e0c7eff9ddb03438d639b238f97e3e4e. 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/TCAJS2511957.