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 0xaaf2f7a51c3650596eb730f3c0c302358fa96ceea1b6226a2fbd2ab9febe2e64. 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/eb4a7d5b-6e92-43f0-8144-dd855f65f150.json and https://artists.proofprofile.net/proofs/artist/eb4a7d5b-6e92-43f0-8144-dd855f65f150.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 0x82b6335a16ed786041a612df581ccb31170607aec6d5a3eae5eb4420532ff55e. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/QZES82134943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9327a5bf8f8906ff95dc922c7cf6862a97b44891f21dbc1c63710915b1f01b25. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZES82134944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282ef4b81a990919aa7794e808b44bafa00e8c907e6447a3b794cdae82e01cf9. 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/QZES82134945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b46c4419eae29abf78a9d6d022f84ecb247dea3a59eb9160e18937243798b. 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/QZES82134946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4af772ed1cc19d5ef6b1ddc7490b68ea8e52a8c7f2b50b461cda13e136791c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:36Z), 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/QZES82134947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5216a15fe7150b88789e127b530a3bfc40bc91fe446e963dc809e1cde491bf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES82134948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae54fbf5e87aa8e8b266a730cac895d9602c209c16bd4dc23d9582f4fec8435f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZES82134949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc798ffb0b52f065fd5fccf49c7d0c08e1020a4b8cb4d0c72bece94bde398fdc. 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/QZHNC2184715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8358f10410d5d68733fc8f341a4ec2c3109062883023f9e8812db6541c3b7c. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:11:29Z), 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/QZK6M2131118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda2779141528b6a28e7f03e184ca4418777b15f524feb5d473f09dcdcd72cb4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN42203952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7373f1cd940caf7d4286cf84894f92a1f179e6ac22ca8987b499f8b59b91e641. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:54:21Z), 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/QZHN42201894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d229c3d2fe7cee7d68d9f90cda476ab9efa55caf90e4844839eba3d579426f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFN2402890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ae1ff1d3b654bb52bf1188024a1145ba37497f1caedf9f190fdf0d4e505d04. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:27Z), 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/QZWFN2402891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50acab40fa7f86a97a4819caf41470783110fa724c0443f69ae9ea7935301c7. 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/QZWFN2402892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8bd282d549c720b9587bb76b0d42104268c22e89ba28eb13aca0de4217b6cf. 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/QZWFN2402893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bb9992d2a475ef096d6d359aa1e364cca35f0609ce1adeff66ada0413f7cb6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZWFN2402894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737365a8bf0a719d6aa460244f1e1904c878e1d84f03e281821e9d85229d9183. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZZ792414429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac6e4b5f59ffd04ef00307c6a5369c7f30fe7eec57f90b140f3718a5c6d01d. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/QZDA82561362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9ca7f511d1f6a4ca706d99249b4736ec03c59fddfb18a228416876cb66b7bf. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN42549917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669583ecf38b5a9f32673693655ab3afa2b63de2caaf06abaedd1703fc96c0f7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFG2520589.