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 0xffddb75ee0e9318eae6eb66598fd67e2ef38b749a63f574217bc56b729dc22bf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50bc6d16-a895-4431-b20b-eb60f656ef7d.json and https://artists.proofprofile.net/proofs/artist/50bc6d16-a895-4431-b20b-eb60f656ef7d.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 0x1d18f370000df021b855c2a677e0ddf03237d5cb2c4ac100a82aaad1814ec403. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXA1L2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5983847317e881400a0ef4b3fa8c7dd2271b8d3248f72816c605959caebc45e. 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/QZTPX2194570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb4841d2b61f5ff771b421512f0bacb0da29bb208f6a0b39ec175f2c134a875. 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/QZNJZ2390386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f3e572f87013c83f6410d9999addf575fc13f76c4d2b3633646ee5aa9e0c9. 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/MXD782302126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56db8c1367daa9fd081fc39be89d8a470c3af4d63c51d0ccd1cbffceadf5c009. 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/MXA0X2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a3ac15ed2675eff64f4ece3b134daa72d1882c465b6c01e693d69bc5622d10. 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/MXUM62300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b11c0d45bdcba19bd24b87b81508a3f95ac8d91a7b6598ce9148fe768d11aca. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNJW2353637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106e9051ca6f1840b8173a3462effbac36b521f0696856f7b068351b820d995d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXUM62300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17ba9e2f3371e978dc4f14f3bb3109806a0455d12ea97c7e262c835731779be. 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/MXUM62300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c378f230a01e59406a9d8b31ace24d4796e16462abca3923baf55eba94d4b88. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXUM62300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b35608700e1b8371a2df7d87ded17638ce259a4780f0e47794b2cceeb87f1a. 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/USUM72207926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b76a5cf83068126b74fcf970c29d21029a94a29d54206d092f92bd82668261. 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/QZHZ52203661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e348bdb3609df010f1075d9b3865765e69ae1beb667756cf3eb91151177d388. 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/QZFP52240046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793011a19a72e505ed84d875ccd53aa9c9f5bce798009cb8f4e2ea288b288157. 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/GX53U2080687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7996b4211e66d62e34abf4b46ac05216801c972a6731d28489363db8ca09dc. 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/GX3Q92195927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92eae4601b9dc49f8d98a99298f3bea6ca5923a9093fa000f2cf93c14d187ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN21918350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb4841d2b61f5ff771b421512f0bacb0da29bb208f6a0b39ec175f2c134a875. 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/QZNJZ2390386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d18f370000df021b855c2a677e0ddf03237d5cb2c4ac100a82aaad1814ec403. 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/MXA1L2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72c34bd336b87b57b14832d9b47c2f6c4185882be59401a36fdb2d74cafcde6. 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/QZNJX2384588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd70573f29b029a63e95bfc8dc81f3424fbbfe873dd8662c82b87dc47e85dccc. 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/QZW9K2267241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e1c424fe9f9edb1edf20f4215f85c8d9e80844fcf380ebdf3d88bf5793d997. 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/QZW9K2267249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9745aa1be20886336aa311076b3293e9be94bd8dfc9b18ee99445c3c7d87afd6. 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/QZW9K2267262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd70573f29b029a63e95bfc8dc81f3424fbbfe873dd8662c82b87dc47e85dccc. 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/QZW9K2267241.