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 0x9baa5c14b5a573b1f42517f46f12b3f12b6c4c54fbf1971d86e3c6e829f12328. 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/52146f39-6522-4715-98bf-be6084b3d0f7.json and https://artists.proofprofile.net/proofs/artist/52146f39-6522-4715-98bf-be6084b3d0f7.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 0x11e9ccb99496331690e48b6c919ab8c1f5d442dff97aeb57da518f2eb746976f. 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/BXIV82477651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382b94a1421c732d6cf9f444fe294b83583f6c949e64b7d32b25a8d293d03da8. 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/BXIV82473037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2b723cc4125132209ac24016f5b1c9cb5f931e2466832283fa84d6ba42017a. 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/BXIV82499588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143551da5a4c9ae01d191a685affb60d9eba2dac4e2d388ebd8d813900b618a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BXIV82428172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eeecba34b808026b4ac0287a5a9d078c42363eea492a7b08f5063b0a78fe74. 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/BXIV82485128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561ce03acb7d2dbca547c226f0d98ef485da6701b65715db78bee9c6fa07830d. 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/BXIV82453352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415fd085e09db13153e7503d8f06e8a3f08589e8d426c12f90f2ffb4821c0105. 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/BXIV82452236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977a3edb3a06db16297be0ee60c991de54970d43d85239358ae2d253b6d11fe4. 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/BXIV82460644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd231592ff807c0bc5225f563b54f7a37f4fafc092a7de02e32d98524abc98de. 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/BXIV82445810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ba728a0beb5d1608fb9f523872d7cf0fbc1c41c6b4a249ee63cb16b74fe421. 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/BXIV82437896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b2b82230b176f58490a3bac4c43573c621df9bf377b42c13d7d3037e8ff33. 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/BXIV82430344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d5251f6ba034a49f469cd60390d3f36d480b89c6c35e20084257af6dcffd8. 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/BXIV82411978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cea5efbb59e6a170a0d757717be71a393bb026cf575547f161276a7827e745. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXIV82498442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14945bad0446c3439fb89176f811e3244b1215ed3f253f29117c95962513bf10. 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/BXIV82457063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffb907b919503beca935a7b5d26aafefb4d75b74f7cc116123085fcdf462250. 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/BXIV82462683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa03f6f6d7aa081fa02754c9ebc5e7e73ae3c7de387094af1fc39b5a909bd804. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BXIV82483616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44827e38b3505ae8c47b1857ff91ee942a4daa4997700ea33f6625e2f1d9e92. 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/QZTPX2222794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6f26b9a33361f8a215c9653fd9a316d70207681fb91fc506c214092a7c38d. 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/QZTPX2222797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10bcf18ea0777be44ac33b54e84a3a8d6a57ffdd0df11dfd6952d2c90ab8dfc. 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/QZTPX2222800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcecec590a5211e1787aaf14521bbceca496dc50a88017c7c5a585eb0c004e1. 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/QZNJW2208000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f19c15747346c4e82ff8f0740b3bdb45d7e11b2ebf7f40df4db1bc0153771. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:25:30Z), 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/QZTPX2222792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffb907b919503beca935a7b5d26aafefb4d75b74f7cc116123085fcdf462250. 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/BXIV82462683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eab1c8d1a7ba57b4d70a912901adca05ff8d7ea052cef49d31f5751e6ef675b. 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/BXIV82386826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a409aa7dd03f9a5b871857bbcae381f8af0d6cfe551be07c5e9eddf749a463. 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/QZW9K2345442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab536017856dc8167accaa5cef4dc80c23a2c18f939fc32cd1642e21333516f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTPX2375284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750a048deb6f3be03ff6e27a56d522a7fcb1db8b0261ac0758a7d046921bbb2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTPX2375285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed581d4110c8dd20aa0291c0ad4232238b6d6573ccc72e6ca289a2250d197d3. 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/QZNJZ2372725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27656c0615c8e4de7cdbbb9c6774496e851a6446f8891e01249bde0af246494b. 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/BR5TG2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad01fa1081690ca1c3182995750022a87e392dd4222c446fa38d1cc21cacd2e. 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/BXIV82346368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0db4153d03df0804d4073846525a916fd138c5fd916e1d413b6c7ee64cf501d. 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/BXIV82371890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b444556dc24fce2a6fb87d6d09d44c170a1f8e2bb93dc930f1bea202a75bb7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZW9N2250221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcecec590a5211e1787aaf14521bbceca496dc50a88017c7c5a585eb0c004e1. 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/QZNJW2208000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da9fb298af67982dcf10c385ff2f6eacb956232e1ad98beb5655fb24213b096. 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/QZ5AB2286058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a83dfb4d8184dd57fc9925dca225ecb9133297cf8b75d5649722880ae08a455. 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/QZNJZ2126546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb2b9e63e5ee4e3dec2b1f03faaa4225a7fdee5aed6d380d5298baf00c8866d. 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/QZW9K2304725.