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 0x2856963260386b08d97525ed109c3eed319a92ec1e1fb30c67cae9ac0d600263. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91f26a40-482a-4148-b84f-52687c38c32c.json and https://artists.proofprofile.net/proofs/artist/91f26a40-482a-4148-b84f-52687c38c32c.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 0xee465e57c05b7000910e2366c1b68df3a2d5666660980cec981b8d09e465637d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES82524058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a41fad9bdc1f7f3e08854f81a1e6cb451a9f56deabc7f7c7e00d5599db91833. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHNB2552655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428781590a0e0ed7ade91923b50e6b628ec3975a8aaf23690f03857a0ef468ee. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNC2522524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a88ec28cdaf90c3e516a1ee7b18066ded2116bcbd91a0a0e829d31a4d2f37. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZK6Q2525666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a88ec28cdaf90c3e516a1ee7b18066ded2116bcbd91a0a0e829d31a4d2f37. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6Q2525666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6e8089733730fa09ca6fbc82c8d936c0e259a21649151c1879e698f733be2d. 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/QZK6P2529129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a756ba54512c696aaa7a5cce653ab1c0fb7d6b19feb837f5abc7eed6a5198. 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/QZHNB2579765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2702bdeeee47b45c9c0be32794879600f02032e09bdc6798a4b031ce4ccca5. 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/QZK6P2577445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e46c582c28f450cbe61aa99f4ecb8ee7d7f5a581121c84289c4b38f5139d50. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZK6P2579576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d22e82d731e1e82eddf70064047ecccb2bce94082f597e53b88e3a7ce7292a. 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/QZK6N2517998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c3701632fccc41195facfe5c3fb23c0cc10e294fe17cf59f1b9b2f106f49d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6N2552937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c9e979ded003c8ada6afc6db3260d33565dad980af76f0ab17df5985be433b. 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/QZK6M2529483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72e7f3f7f032a812ce84f1da13276dc674ed468a2a7ba0f6ac973f2febbcda. 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/QZK6M2529486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa4630aefc28243e1a27883cc9153a3b996701e51328fbc3527a07ef95d70ab. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6L2510388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1d40e23b3298fce9d0fd8fdce97c246b06d2f994f0968f7faa3ae238ae6647. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZMEM2537869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834b31c5ac9ba1b3cb11c3c26c6a028d7cbeb5d267849f2c79d1b78770476525. 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/QZK6F2513569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58d103f1c15c952ba21b7b271551e106260698f6fd3bb657adc3b0ef7f1ac59. 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/QZNWQ2564207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a11b246aecc1aab07a9620146952255502ecf23bbea0c9cab16517518c15d. 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/TCAJP2534516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55735ac6190a8eac6116665536a90af662f48fea98bd19e77aa5cc10dddc1bd6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:25:52Z), 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/TCAJP2586226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446a65ee090eff068ad4143438d55bb049b9b6a05548cb66bac17666475824f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJQ2512756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deae2b4a302599a76bbbbcdfddc95a887ea2f1261361df2113d3bb85a5c393e. 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/TCAJR2524398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e8a3bbff0164b6d639db4f5e4e6ee2b5ad2eb8b06567f80118e7cd5dc4bdc6. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJR2524190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a1e405225dac60c0ac3a01c9604a94dbcc5050b078536c95a2af340857a3db. 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/TCAJS2533608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4ed820869ce75421ecb6a248fa69d1ec4562a7c0af14a8912dbb4f525c250b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:55:27Z), 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/TCAJT2519608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60329bd3a62f735f5c0849588107682f59b96e1c5c801fa17871334cc99bf3eb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:45Z), 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/TCAJT2534392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e4c4156d2bfd30dfecdac895d1918018fc13b294fadd215fe054daf4ffb6a7. 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/TCAJX2564101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d209a317560ede35d71a9cd5886b564edb9bc208b9dcf3c8f394278222476ee. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJY2565781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220d75d290e3ad11269e643b45bbb99ff3eaa1251cadd80d58b78e03dec4fda7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:07Z), 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/TCAJZ2549877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6665dd9c75169679311edf20f19971561770994406eacead2ae84e749a98fe86. 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/QT65W2597276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c094b98a6b310bbbe8548729d8119797c8f1c7e0de53c8eb90ba186a53b421. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT65Y2549299.