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 0xa3cd5c008b2c54d415c8bf155cdd6459284dad471fd279af7334a5eab4730cbe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa243303-1798-4c5e-9e5f-acb7bc6a9f60.json and https://artists.proofprofile.net/proofs/artist/fa243303-1798-4c5e-9e5f-acb7bc6a9f60.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 0xe3aef8fd467c439f0e0eb89cccccc5e784f863fa412e1c58d0f269edb1f193b4. 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/JPPO02105238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6da4cd0f014f54466d7009c52ac0496be372d9a46f2198e9596e1096935a158. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JPPO02200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca38451c8db6e91af622e33b153056177b1560870a01410eebc594747e3b934. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:11Z), 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/JPPO02201229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68e37d9bd16bbed83f0f18e0bb32bdbddf6cfe7e8abcd12d01b2de584e6fb91. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPPO02202294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb165c6a170e9a4fecfaa2069266260bbd51e73156835b66f68ab6a416e24420. 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/JPPO02300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc032d46015ea1d7ecf75a90b4e3993d11847c8b2a2fe4a3040cf78349e1dfe4. 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/JPPO02300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e6fe407c304d2953325c8064f0f54abe81c8210c00e9ae8dfc09b990638aa8. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/JPPO02300438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aef8fd467c439f0e0eb89cccccc5e784f863fa412e1c58d0f269edb1f193b4. 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/JPPO02105238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa911799422ce26d61bcd327d8ec9f75f15f2b944477c4571ac2f37f0fffd557. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPPO02300439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6da4cd0f014f54466d7009c52ac0496be372d9a46f2198e9596e1096935a158. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPPO02200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb165c6a170e9a4fecfaa2069266260bbd51e73156835b66f68ab6a416e24420. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b852d432d604988d2a97d06afec551dc410b82b534a9802d3e507dfcd37f8f0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:50Z), 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/JPPO02303369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aee9fb64407b7420c91b1412aafbde818abc3c9913070deeb83e0694b11116. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPPO02303370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eaa474a4fee0b56a089a75c907a3b96d74ca1bd1e0579510fdb46613fef5d2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02303372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe3d2cec7507c91c3cdf855147787f1d2fe89df338c89c361ac0790006dc89c. 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/JPPO02400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfe255b7c7cf16a56431e5082e8593740225920de49678f52d6cf271b7d2e5f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPPO02400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe3d2cec7507c91c3cdf855147787f1d2fe89df338c89c361ac0790006dc89c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:06Z), 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/JPPO02400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f39befd2222078898bb7f1cc09c1b7fdbed7466f75f69433093887ded28cde. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:09Z), 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/JP92N2428737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955effbbe757e71b4cc0090d4d44c1d87507a11f0efbfdb3fa9c734b7eb8f6a0. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:17:02Z), 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/JP92N2428740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a96487dc3305528f441b9b8e255521e8b1dcf3f095c1eb92eb9dc45de7c242. 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/JP92N2428742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e8970ee0960f24e5f141a0e5323ac553dea44bad8a27c34475212cfdd537f9. 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/QM4TX2496262.