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 0xb9b4de31433c28cba8ac5851fa80d7722efef656231121e04a127d64a39fa4d6. 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/c6f78e32-00ef-4400-a61c-59b28a5f65b8.json and https://artists.proofprofile.net/proofs/artist/c6f78e32-00ef-4400-a61c-59b28a5f65b8.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 0x6ef15e5d031d9d5368a46f4089676061ba6c6d86d3dc75490d839cde600356f6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA21851589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ab6ef804161f136236fcad92c2f71e1c196eb10b272997b42aade7643058e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMA21865800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318fa28fdf981b3f58391e24242f949b7a82f51ed90c2a3907e21495701b9b33. 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/QMBZ91949806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb943be4af83764f25de6a6beac1449f8b99aadd20923e97d5d785d97becf838e. 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/QMBZ91949807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6460a192d1e3d2f40c5a2f557289c9c28a4e9df3545c761cbcd1b93290cc6a2e. 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/QMBZ91949808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecff8576aa5ae97715479f68389176c1f75d0dbaca8a5d7e0bd8d7e542242054. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ91949809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b094b7780547fff4721631f6e04bd9f3cc31b2996e99bcf69c4c5996bb17731. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMBZ91949810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5e88be91d365a246fdef18499fa9f92e21bad03922e4f0d33459bd39a2b1d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ91949811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ab6ef804161f136236fcad92c2f71e1c196eb10b272997b42aade7643058e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA21865800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d84a550c6f20eca5049133fe0ca812a14d8f03802e2a53935d5550a97168728. 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/ARF062100528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ee22d415820fac372421dfbe989e53c68aafdb2342c815fee8ebc4e79959f. 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/QMDA62104547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78730db1a00addad5f34bf93a5a5706b3913c677bb5700452c841a40780ece4. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QM6N22292973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b60eaef360cf431eb3083b5c87c42bda67cfff69da1534bb502aa1ebb1ca872. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TX2429505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05c8ebf62fcf007cfcc6c525434dabcaab436aadbe4f943668528c0123d4965. 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/QM6MZ2433948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abe5b745136f204e57a257619fc4f4e269c7e05ee45ef1bffc94adc670d9a75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42321011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f13290066daf538a492f5177411356c86193c580b61953f6795a26b619514. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWL12300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abe5b745136f204e57a257619fc4f4e269c7e05ee45ef1bffc94adc670d9a75. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42321011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f87d011c89f29531291148e3d491c78efa0f719406a469fff01198d7441e612. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME2055200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b3ea8b68ee608408382532b7d4933947bfeea697ca3c3df537732c24308606. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22229479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d84a550c6f20eca5049133fe0ca812a14d8f03802e2a53935d5550a97168728. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF062100528.