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 0xeca30ea0f161df95c1cf3092ae494d9271103f2ae9061d9806fc3d554e19c052. 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/900e70e6-07b0-405a-812b-b6f49a7b4910.json and https://artists.proofprofile.net/proofs/artist/900e70e6-07b0-405a-812b-b6f49a7b4910.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 0x5395efa3ef51dcd06a107e88d43d643646709def0768e89c06695685674852b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2143290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4d7439eaa3c461d17c3f4b2addee51716fc241cebb821303c15e0bf79c048b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2171804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76b45adf0a4c26a0d244a88e6ac1ca0eb9f15f44ad7670b5586c27314b7f5be. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF2204176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48498c3ab4b221c520d017cf31b7384074d7c92611799279b29ec8c8e0fd227. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF2261535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afeab9618c30580be59582483bb0a787e5148281dcd9c92db8cb9a8fd58d3fa. 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/US3DF2262294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d587f1664cc7d0eda679cd287c71adeb70b62a1f0538874f7fbb4c049cd34bf. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/US3DF2262296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6bd7d66b918afb816df258a6d2e167e0f51d7abf55d563e485218701a1b71e. 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/US3DF2272551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abe5b76bcb8de988268fe3c0a64bd2a7009bd3f376b59dfbb51d216f2988054. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USANG2212682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8c19f40723f0a638958a5c74439b7884ffe10bd35d0b3dc9351fe7f63c05c9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLX9G2200272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9577d32605294d30bf6be489b34bf883a0bb77bf7daf58312c28e31414cf6c0e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2220060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d6630f9a89ebc5a9e269ffe62d445c5e74955d1ccddc39f7e7afd224d78413. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2220027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad4f422206984975f9862659dd31457acc7397c512312d74cda3399f2cdaeb4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2220035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ff9b3e3abc2f9db5d02dd56cd8b15ee9da2e0dfa3ad614c61511d580b72b36. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:31:50Z), 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/USANG2220024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cf671472394dbfc6956e764655660628a3b707b28d17092794520eab703890. 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/USANG2220021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421aabac1aa213d1a3806ade5073d609aae040fc3297979c73561b4e9a7948cc. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/USANG2220031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08cd3512a990baf0e886a39f5ef58eeb632d5f966c7e271463d22156e9c5b4b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEQ022380583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab05e7ab6a0530d9eab2d67f4f0121adee7bfc1f4f98c751f3aa6eeec3287ac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2270788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e514897f1eeca2975e1897f2c8d57856aeb1088a6b5594c9ac1b48c8b4b7d46. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USANG2270787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ded6e4d016c90ac015751705c7e1cffe5f3fe1aea9b3dee9ca7a9054c94f9a3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USANG2270789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a9a2fae3e89213ee65ba6748cf76c766bd7a4ffa7b7b716f424703ce603c1. 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/QM3DF2203650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de50e6398ce46f40da73fedc9985b498687f6407e0e6fcdf00bec2c34719d35. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM3DF2203653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e5c74e60ba7529e213ebbb40ed3ab5e623c583a63fc10b3d451042b6e3194. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMANG2220943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737a2c4a597735c1f83733f3afe032c60557a12d56dda527d01e9787b03655df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM3DF2204233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eb5b8496727bdad75aeac3cbd833151e0bb719a7683aff5d38644c6857b161. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QM3DF2204247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e857581bbd17548913fa35852d4cd1ade7658d3144d7df338b52d4f15781d. 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/QM3DF2204252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf83af40da2587db08177d64ace45cf42ef182001dc6e0c2b1b1e87f72d990c7. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMANG2248449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb517c9551742ecd6cd088fe8e129f7189a76caa1641bf2acc997531ddfbc3883. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMANG2255084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf85d21f7ea8cec51623883df1581e6e5f64d25bebe5332e115858d4dddec611. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/US3DF2413319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a44f6418be74fc465de8f2d4a44a356ade0b8e6f27b269ab81b9e82a7e599ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2413344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a45827bdb73c17c13badb5ea4c7f91901b727d2280c87182542f74ebc4baa2. 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/FR9Z62400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8024b28be8235aaccdf68e2b0deeaac6de3140b8766919a8b32872fcf6e017be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2413360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb517c9551742ecd6cd088fe8e129f7189a76caa1641bf2acc997531ddfbc3883. 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/QMANG2255084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a44f6418be74fc465de8f2d4a44a356ade0b8e6f27b269ab81b9e82a7e599ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2413344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038407262b319bfa250d86a586efc07069a83aa59ee0100304461f42bcf18ccd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2413374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053d358cbda4df68025a462cf853e3455b675eff27bdf08b09789c21aa91e0da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2413382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa950c2b9c93ec3745859df2080463000f6a44d5dd86391da99edebcbcd1f7729. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9Z62400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4b6b4f3273950e52a7a55351bde868d5e4a188b597870bd8f31168251dea14. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:46:48Z), 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/DGA092402304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da8250faf0e5ea464fd173cff8326f0c9b0d7d6703971b0102b7feac27c53a. 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/DGA0M2453867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ec67462115093ba77791f31c12bb0bbe22b69c98da8437d6bacccfd1a3a13c. 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/DGA0M2453868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf896ce0dda610e907ac7e117b08d846aa829e96e108261cec7cc45ed4448d05. 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/QM3DF2401773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4a889da1a9cc7632e1267f7bba3cc4787374b302b9b4b088eb73e725ff3ce8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US3DF2556778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153f08d37addd1db04d20cb391779087340d2d2bdb3af24400f9afe7f2e121f8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL1LE2403643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f9b4f68dda044b8ffdde5eacdaa726532116b05e48dffd6faf8a17b6c6b2c9. 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/USJJX2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf70ac6dd6ab836f8c474839532d1c13a288df873a74dcad475390e033d4f98b. 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/NL1LE2302889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4bc7e48f8d011871ba6d7b66cab0540c2aeafad359821c49a47307d33c9db7. 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/USANG2411712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0c494d73bffe21b4aaf73c27f25ef52c2740c580d8b90d769c5c1ecdaadf86. 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/DGA052221595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a26baae50696d602211989c002050ae27ddc2e949360a824fd780d0008d64. 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/NL1LE2403523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c018d25932f34a0da5894ced1ea2aa80c97bc205a01e62a17a9a0682ccfe7d3. 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/US3DF2243499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153f08d37addd1db04d20cb391779087340d2d2bdb3af24400f9afe7f2e121f8. 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/NL1LE2403643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf5cf0e13be0e3a1e6ea912226998c084593d776a8032c940521ac98cab0ee4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US3DF2271104.
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 0xe9ab9bef80639145469ba3f38766ddb21076acbf29c47f633045a178d78c19e2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US3DF2219996.