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 0xdb9114341cebba6ba16c54f284ece31c8d1d58d418de04242a5a3bc5baab2530. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27019541-11d8-4a6b-8f50-a7c5ecb6ad3b.json and https://artists.proofprofile.net/proofs/artist/27019541-11d8-4a6b-8f50-a7c5ecb6ad3b.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 0x7d8807aec637569a6eb21822b6ecc3e52bfe386036e38d50f8938e269c4c3d25. 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/QZTBC2402625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b31442757559b6b3996709e29d9ac17e96ecc5f95fa0684ebad967ebca92614. 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/QZWFL2464815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30ea65ba4da42cd94ebff64f0120ba8c8e151ffdf1008ea65fbf1c112b84bac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFM2444034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bac9ba923518cc6ebfc6b61822f62446d92b119280e73ef3fc06218b0221e70. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFU2415565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa74a3dcb187c8245f12f412c7de10ba561b1a54c444a73cef6bf8329985ca2f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ762416830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bcbc9411271dc1aa5eaa5f17026a9ae75f407c1a73fe93a9303fc4a539d508. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:20Z), 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/QZZ772499073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6babbd3001a38074af8dc4ba02977f3d70d20f31e27d0b92ced7acdf8d7589. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:09:26Z), 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/QZZ7U2421181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377354d3a0a54b4a37a32b673d51f904e6548cde3291ef15f9fca64ac39d4d91. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3EX2413678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b33c10ffedf9d17ad4c9444417f542b5c1ae61c9a047c694a0ce9029804fe9. 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/QZFYX2575997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a0e47aa8b54e4acf04862b563bb54147b1c8845b8fb4354125bb6bd09e0913. 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/QZWFV2424503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc521928f62ee0d0ffadb13b1e734eaa4d8ac774bbd4a9686b0fbf0d0deff5. 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/QZFZ62527171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9390e99bab3c59d8fa47a4dc3bc5895f80abf9dd8f6f77d963d113e2451f579. 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/QZDA82517748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade757eb55e225d62d65fde49b0c8a92e2d150ceee11c96367ee014a0ededda. 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/QZDA82519570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9894cc2a913440d8ef0836ac31c3be9a8c16dc19f7a09aa4a232894b1f0108. 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/QZES62588053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79fe924da4e475645adbb3d8137bacf9ac2ef711d79ecde95853fbf8dba040. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA82519576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d27a986bac725e8ad23e4dc022a12382921eef80a6e9426ebc627ddfe03dd63. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZDA82522895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60e7a729edb606bbb92641499c6d0b02996e0d39f76305110e9b7c52f11a83c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN82523919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb107459ee200b4a269c325e41415d0684050b4d5f88f83d20d39120fe2ba2c93. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZHNB2553635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae517270dfed202ca460c17c435d61eafc470221b9e6f4e6fbee218ba26bec0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZK6Q2593641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96170edf423a3dca0f898de85d7c9341bcbc8196b77ceec734a4903914748eca. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6G2507114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ebb89b65d7e6221ab6274f461c882491a2e2bc5c999d6a3a89cf5c59c05188. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6J2581818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7794ac8aa65a052004c456270192ad2330736d49e59350921ab39165a5879f. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZRP52502927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5cda65eb3b43aec280629119c9c498f97bc360e081ff26d3c82fcaca35731. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAS2565649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeeaef377f00d201e2c7f99c99b9d0091bae56e0a79566180eb2c5ca74c718c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:51:44Z), 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/QZES62590313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963859081b5b5c2aa10ed69a85a4be92879291f7304b081e1431280a33e629d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:44Z), 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/QZTB52539348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e9a7e6f86cbfe4e2b6302215c7b48b0826700d59f0e1381531d3d9196de67c. 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/QZWFG2551066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc9b7d30f0ca3d4ecd951519de361468aba60415b827791a30c58402df018db. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:21Z), 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/QZWFQ2564457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07d39a577e8f98068d308d59e1dc48d5b5de433ebcc2fea961fbcabfb4f130f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ7R2559488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac818638c3b999379e5089b2c6ca7db51020b031af191e35421ac94290a981ab. 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/QZZ7U2552344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e3f5707955bb5c75034c1db50c974eba1f6ae579a49ca676a03c6619b41f31. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT3F52506411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76266ef012cb50485b543b1e87026bae44940337645f81aa21c45dcf55de5d1. 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/QT3FC2501536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af987e8feb4f3d7bf5adb869927155de9e9c131c81dcfc64c5de33216a73f1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:10Z), 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/QT3FG2558357.