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 0x41314314c487f6fd418f64c522bc77cb8079de8d8e83ce0c0b5b69c4a1b1d35c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56c2a2c9-c6a4-4489-8412-88f592440a04.json and https://artists.proofprofile.net/proofs/artist/56c2a2c9-c6a4-4489-8412-88f592440a04.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 0x716ec83f59023a0483e46dcf40e7e273a11795af0d11ced821ef365ab428eb01. 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/FR96X1920315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04c4fe241dd3ebcacb68033f5f7bf6f86054f22994082365a98624b5022a582. 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/FR96X1920316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765ee833fdcc9de93ca399eae1f447621de9f8b6f0f7727521a66569e8927421. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:51Z), 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/FR96X1920317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66f26e36c5134e6b03a28590d8b4ac84ccac09d6279e1e105cadbed5d51bb87. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR96X1920314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5de0790159de07d115b7f08c44ac3027391ab2aad64046528d547404c0b12. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FR96X1920313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9726812a1c8ce3f80a3d9daf35039b0d4f08a7cc99fc355b6d1db1105d283a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:46Z), 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/FR96X1933515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd258a7dd8975d016ea021a6dd4b432df7c51c3f2017143cd77e892243024a3. 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/FR96X1939735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f06685022541b4dd03f579a113fa8398544079745f9f845b02bf168653f89a. 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/FR96X1939738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa750d06b58c7bea11c2853cac7ee12d254c58b942bb44dc85534ed6481852f38. 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/FR96X1939739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31989a07b5db3ee4f923f40686f39b8389aab34c6a9f9c4880a97e6e5b41f20. 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/FR96X1939740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29de76d786ab79245aae6de9ca9a47a3936d94f87a2181b236d39bf98361b1f8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR96X1943255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb613def1fdee3e60d2384a1977d827718b3344fa81054754d79c3b1bf1c489b. 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/FR96X1943256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab4bdaf1f189e5d94584a99890156b5db9de4eb85d19ca548ea70d32c8a9cdd. 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/FR96X1943257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcda1a7125c2e0e8b52e425b6108284a21c071f76651d82baf7c8db3a750895. 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/FR96X1943258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55118645875752e9b6703924d88e0f631ec79d6b23a5c8b19b7face94a30571. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR96X1943259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f695d51b3c4ce9f1a52046f3518b7b83043400e67d16d13364910d719c839. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR96X1943260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b2242b2bae8227688ce1c9a4238db6e8758d7307236432636842364a29b849. 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/FR96X1943261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3235546ad2c70ec9dfcecefb116980c9ddc1819b1e62634678a498c3bcc2a8. 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/FR96X1943262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4d092669e31f791e4263bc8ea22a373965750c993b05788059ab5e0f7ee347. 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/FR96X1943263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb9ec2543cd6950a0cbb4d2b77cca7817a62f809086806419e294bd2d96cfe6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR96X1943264.