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 0x8e296a8c0287cea17d30e79af60795c382079003d03a021c0bec3d2d8d276ecf. 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/684ca22e-0a99-4161-9b5f-c44228775aea.json and https://artists.proofprofile.net/proofs/artist/684ca22e-0a99-4161-9b5f-c44228775aea.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 0xeb86e189481b77c1b8ed5cec57d64f2046de61c48149f273589e937e96bc17d4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:07Z), 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/ES8241924901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd59f05f83f080fa947162fa40a1aa33148582237e27f767aa510febe36b9a4. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/ES8241924902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19df553def6118d8eca0eb664eba6b88529065bd1379add401176e4f86ef4dbf. 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/ES8241924903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70328e1d8fca22b930e41fc32998b10df471d12841eac639bfd12a2fa0a8931e. 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/ES8241924907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e8be78d476453cf318854b0a0a9e442fcee3a95cab9dd1316e581578f1577f. 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/ES8241924909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97b244dc58d0d5cb415c750acfabf7c7d6cc0f39a90a77792739cac91a5613c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES8241924910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a268f70b2d72d6749483c31d36096abac189c9ec2ced60a081ec3bed48defb2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:42Z), 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/ES8241924911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b35e253859ef70ce2aea958ecc961756cbf9ccd1f724261d69bac42dcbd90ca. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES8241924912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadef53731f1d1ef0eaf37f1f94ab010e1da3da4f391745ae410b8243e670a951. 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/CH6542288769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24788915c0972bfb6c6914a40bad3f770775e8b44ca41b0832079119bc6d146. 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/CH6542279879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3537f29eca3296e3d6aa2a1098e1f2b30d936714736728664bbe303d5342eef6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES71G2504623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22527a6e7cec41db9af7bcc38e36fea8aff7422668035f52416aa5b5ebffa13. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G2504632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38172d77c0e7c29afcb1c3481bc09b374b1a92a852075a5c4037227a9a93100d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES71G2504633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3537f29eca3296e3d6aa2a1098e1f2b30d936714736728664bbe303d5342eef6. 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/ES71G2504623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed292abaffbe02dfdd69769ca228a77fc56cfedddb90f08f04cc494d823612d4. 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/ES71G2507643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a95f95867e28da833aa4cd40ee1014dc6975734baa73ebdcf6c0ddd6dea517. 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/ES71G2507645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b7a3b7b1f08ef29723188b399b39433aa851ee09ce66f92557dae899a80a93. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:16Z), 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/ES71G2507646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22527a6e7cec41db9af7bcc38e36fea8aff7422668035f52416aa5b5ebffa13. 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/ES71G2504632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e385e8d3cd6555656a099b2b40b7bedb77a1638424c1ef19b08ea6098a8b8d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ES71G2507644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510bd68d3c1177d34a81e00993a0196ac1e54445943a773287ba26c542a8335d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:11:07Z), 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/ES71G2507647.