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 0xe900a7eef6def63017fbea72e4b8eec590c31d20915c9f3f6b517b340c1f4598. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMEU31503599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fa44c07fca5a6c8164da791b57858a04559c90313093ec971a20f6d68bb101. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMEU31503614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe513a0fd7f1bf41ca48968f1823d3dc56db6e8c853cfed2dba124b5f4cfbbe1a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QMEU31503615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e5611199c63315ca9683417e7b7faaddca75c71ea0d4beb9d95728b754e21. 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/QMEU31503602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a959c7b465c4824bcfab9503114bf9a2376e67c210fc928ae206a008320d1d. 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/QMEU31503603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35d990e5300c9062f8bef6b68add7dced37058e5e4b4bfba9d98ac352c0a344. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMEU31503624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01b7e7313b9dc6a465d45c47590be0a99a05c7563bc7f2ecb5887aa3ef0a88. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JMA271455740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d8b2115e767b93c8e8c1b63865dde665a0f0b277b14fed6b47e0c8978a2505. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/JMA271455741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403eb62455e1a56e212ebe67a60efe1d8ff054653ebac3e9b2d2a39035b9d20a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/JMA271455742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9be45f29459480d8b99538508f07d3c783b04e8d56fba34a4e76c9b7c47f69b. 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/JMA271455743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee6f3b066a64261450cc2543d0045d4e4651efd5d8ab85874a02dc93be22dd. 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/JMA271455744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9c4862ae348b2c87f9a996ba36f5ec330ce0aa908f405b03e543945f675cdb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/JMA271455746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1665498e0efd720984564df303dfff52b2f9afffe80014d7c0949ab88a002858. 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/JMA271455747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eaf18a04a4c2e2ac850cbee6aac7de25b17576eb07251ba4be5aafcd475c06. 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/USCGJ1752431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07f0383df79dcdde9dc0b8f58c4460c9e14bf79e367bb7f92cb2833a4908757. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRZ1Z1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aca794fb8d479c5f701c351cd96f5d309da8bf9758eb3f2887ffdd286ac782. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRZ1Z1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54efd44379b0279974d3b526570283b2d6a10ddf23e8e82e52009b234a16a331. 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/BRZ1Z1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3180f05b48b25f4de0788d343664acc0636d58765598d3ee1b55af68414861. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/BRZ1Z1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3399986e18316e7938f4a029ed2fdf84a26e4b10c291ca9b19b154ac2f2e4f. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRZ1Z1400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6149904e02914d26732343d21b303665f16f5a5560b8228b8d24285f8c58b1f. 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/USDY42223346.