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 0xf70f75ca81f1aa4686330e0593754c474bf953a9b96849959a73428302dfc733. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64bf19f0-e809-4605-95eb-456a540ecfa8.json and https://artists.proofprofile.net/proofs/artist/64bf19f0-e809-4605-95eb-456a540ecfa8.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 0x51bde0f6bab6f30e805797e6902bcee5f92b9aa1acbc621d385e782d2b3a9f3d. 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/LTA321800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de8277e53daba7a5d499ec5563843ce2452d834ce466c3de19392df928dd25. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LTA321800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410354e71a646425511f871d458c3c4cbd988a6b0fd6396a8151788501c25540. 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/LTA321800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6154e842080e4ea1bc740517a23e31508539efbd8034f1604f7678f251649af7. 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/LTA321800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b33b4ceb022eb9631658d6f05c8f50e9171568054052f18c21fed6f3121955. 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/LTA321800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c2272ebac85e425736ed0acbc86e8c8903f28ffd90a0737817ac2d6cbf488c. 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/LTA321800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb029bbcb635fa708b22213f4237eec76d82a2d2b6961419249f5629c519301e. 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/LTA321800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d5ac8095809cf5c9092a174e3363b091a42fffbd726fb99a2680f45df362c6. 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/LTA321800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02efb740b256b544d73570fdd2f029ae9eacf617eb2f04c766e363b25e1a5f02. 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/LTA321800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ddb5f76453b92d4dda3004495977733a2c6f086d6431eb4c1f05590e058c86. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/LTA321800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2b7cb3b066dfd1bafb13b1b36d84b5806a997a0375352ffd454fa35ab2fd5. 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/LTA321800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e55b4df7dc974bf0cd409320ccf4238924b0507060dd9c22eec922a4dfd35fa. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/LTA321800035.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea595a08d7a9a2f717d7fb6f646fcf6729dede43eb42b768785e2dc1053093d6. 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/LTA610500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c0ccfce30cdd1a8bd131ea2bab3a0b285a6160c9b5394d8ee6c6af3abf303b. 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/LTJ052100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9947a38ca265ed4ad51b050b6cdd33b17c05cb074ef83b87125a8612c5bc02. 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/LTC531800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf497cdddbcf0d3298cdb42152bc2565913db1e52adbe29a864fdb38515463133. 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/LTA890300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d10dcef4c22cb7bec28c49796103f0e381e647e9803cf3e2c9da7e4b9aa80. 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/LTB381200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa4f42a51b12bf9346b09500070b77882511f00e94886f0072bd0ecf486fe9. 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/LTB381200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deb7e73bb8b9f0a3dbaaa382fec61ea437f727752e607b0f666c89f0fcb7b0e. 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/LTB381200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64fd0e7062e0b0bcbdb075d623356fd71e3911edc23a8038b56adacad18ac74. 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/LTB381200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7327758d1fc51d20de4b1604872e102c5a40d859022ab031ecf1d5474b0627e5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/LTB381200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52e6dbdc7a8ce5a4a736c610488aece8edc4d90fc6afcbb7b635afc897f235. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/LTB381200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141848e5084e7437c957fa7a3f81d690fcebd5c5d8be123c40de9f73b53e9440. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/LTB381200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e28b6f18e07af80dd6770306ca0b482a4b6a7922ac1181b02dc10ff9b449093. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/LTB381200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c37e774dd9e9a7472d3b0513ff2945ba7f61332818c5ca8948d5124e855388c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LTA321800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99deb2a09bfb2f5f5ec695389e901b8714309dbe5eb099454436511f02889f3. 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/LTA321800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18af207c4430eed93226df8b62263f72f264059b5ffad4c7dfa274418ec4058. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/LTA321800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46ab5a04469cbf9d33dcf24cfba321c02b80491f1c6bb71d4e8d7c265b27c1a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LTA321800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43973c1b79970e5598f3edbfa8424f1b19b71db2d4eb43b5a23ce4c84ee52d7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LTA321800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096fc5e388a90c9623de855e8ad1eb4b2832fb81cac6a2efb0a1c2c2f95ed0af. 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/LTA321800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324f5023bc9e64bad66ff92da21e9d888359b19507d1f3ded6d925dd94fe113a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LTA321800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5130b59a024eeb94502f8d595477233a9ce2ec956d8efa7e1e5b6e6d02d80f13. 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/LTA321800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827babdcb8fa7ef1f73d78fc00ab8b698483c5b75408e60f302979530d432cd9. 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/LTA321800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b9a743a23f7b6210c4678d07f0160cf995c43092998222afd5bc6031f3365. 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/LTA321800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545093b1f357ee60ea3f7fb85cd963699b38bf7b3353fae9a843bdd0b6e49edd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/LTA321800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64637f530448a0b7a5414beea60e9a7034ef4c920767505e2ddf7ee7067d2896. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/LTA321800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2686014f3f5026e1d0bebf1274677e6bd8540f7c3fd38e4fdc89007beb92f6. 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/USLZJ1874958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd52998a2b8e1d7df9d5d2cbda5e02a1394f40b3a14d2917575188b9710c1f3. 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/USLZJ1874959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc0c6aa5afdf987431066ea2483db1d97abbdbdee6484ae4c822f645a39a01. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USLZJ1874961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9146f31bea529c4d150edc0432aea50f7d7fdb27b9df7d2e6519083d09c310ba. 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/LTJ172200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12486593d2efcc96009136f59e44f8036e91725d506901df2530bf200991dc02. 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/LTJ172200007.