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 0x22bee987ec74d4e8af3cb788339e923a7c4b74a85a0c313a1f8a068a758857ad. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/579f5bf5-b8e5-4109-a6dd-1b712fa92a4e.json and https://artists.proofprofile.net/proofs/artist/579f5bf5-b8e5-4109-a6dd-1b712fa92a4e.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 0xfd7b78cd78a653112345241112be0dd0c744b16be0cdf3349b29aeab836cc3ef. 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/IL1012100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07972406674e639f444cc5c2032374090123ebcf83975a968c4798c42ca73e80. 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/IL1012200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff127ceecd0e225d3595b5e1cb6562fd73aad0369f99abb87b4579bb3fef88b. 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/IL1012200883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb262880a086c0daae8937ef658e652bdd6633860f55b825bb4003ba62559f906. 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/IL1012201125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d67f71b4262d4743443469409e56dedfbc859a35f4906b6da901238b3e76e2. 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/IL1012301419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e34a5b13b0b519d2516870077ba5efa7a08812b3b9e7f3203794b6ce08e9ac. 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/IL1012400611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66d43e544b8dc2a2de0b96219738b480fff195ac2ba17528ec5bb8321810494. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL1012400613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c73ce7e8e47bc8872d068a198621a03c96bedf1ae20464ab714d23b60fa915. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:04:51Z), 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/IL1012400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e2e33cfac9a6006eb865f097bcb37db7386dc90d69dcb56a0467cdba107b8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/IL1012300936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72598821a3f3c23a0adb360cdcd732d6b36a62dbc736a9a55185c1863ae60d2b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/IL1012400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5faded8b0acaeb78ecea03d84ba702269e164787042b2b5e3109b9276b4eba1. 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/IL1012500527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543df1e049c4e2bda2cd6812aa441b47fe3e9be6d2d4b02de8326aedd7970d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1012402449.