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 0xf8b7bad35064cc9310dfd5280c97e1670bb8571c29271793d04aae86459490e7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e21be86d-0e2a-49e2-8df8-fb90da0264bb.json and https://artists.proofprofile.net/proofs/artist/e21be86d-0e2a-49e2-8df8-fb90da0264bb.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 0xe9360c8d8ccf88f34ad43d1a905e0d59e754751b634419516f9d63bfec93b07c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZAY41901551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87322d3936547c6b98ae8355f4ce4c0f959cadbd980006d53c8b8e11b6e3e17b. 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/QZAY41901552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887bbe5e762d0c72db6464ed952084dadab6e125f43dca244fb6739b83e204b6. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:20:30Z), 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/QZAY41901553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9143f2bfe7440dc9a37ac7ae837bd7bf6e823d258b97f30d733f50f5a6354e. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZAY41901554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc758a175d9c28ec70da21ae906dfda97a7b525825f3fe570c626841d9b630c52. 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/QZAY41901555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f1c7e599c513c48718c66eb9c73b43a3b7a6a18d5fc248bd5376676c9f00c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPZ921601615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0045dc6fc329a598812af72fea34617355464466126e107986f466dcd855f9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:54Z), 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/FR42O1600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8421f5fb2c49d0f39958e3af4aa790df2dfcafaa0151e8d4c152083ea8727b50. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:06Z), 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/JPZ921601619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db45db9d477129d1b3a01482620edf2bb848bd2c2a8ba14802a3ce099334f62. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPZ921601620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66664b8a80c3bb57faf4b470baf90384c07d668e6ad0afbbe9641bec8f7e6ce. 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/QZAY41901556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf5bf3f32ab116885a86f9867292d8de40431a381df2da57ab27c9f7ac2c9f. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCJPL2009222.
Historia (Remastered) [feat. Kazuki Kadowaki]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba312b0ace3c460e56cc1117bf4dd5d52ffe1562a3375d9e59da65a782917189. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPL2009227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9c1d0e1d5967cb08935623b53dcdc34203fd521266872b37add8b5c13b5e47. 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/TCJPL2009230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6746e647c71c870aa69ec9659760b8ac741c9a006435ab6392d00282672fb6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCJPL2009234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0591761a6a6fd40e97f01b05ccf6553dbb073169b9cdacdce2db878b60ea9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPL2009248.
Life is a journey to find you - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ace7dc62ef2f912e43b6d58109f9aaf617885ef263332d876fa28c66fd8cd99. 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/TCJPL2009252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba312b0ace3c460e56cc1117bf4dd5d52ffe1562a3375d9e59da65a782917189. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPL2009227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9c1d0e1d5967cb08935623b53dcdc34203fd521266872b37add8b5c13b5e47. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPL2009230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6746e647c71c870aa69ec9659760b8ac741c9a006435ab6392d00282672fb6. 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/TCJPL2009234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98e69a66216b18f0f67a4e6156f753c29f7d2f100279b65f17db172ae51239. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCJPL2009242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0591761a6a6fd40e97f01b05ccf6553dbb073169b9cdacdce2db878b60ea9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:29Z), 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/TCJPL2009248.