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 0x6e0052ddc03116077dec24f1c18eb65f49ddbc9a687bdcaf6f118eabc1fcf63a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRIDO2210539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adffa72c69acfc603b109e35540b4090d6ab6b8f179b288dc32024d32a176dd. 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/DGA062489297.
PDX2MUC: Portland to Munich (Compiled by NorthernDraw)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747f0a499d4d135f2f3327babf8a44b563935f12bfe8a07152c051322cbdd18. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QM4DW1808898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf424847213afd201ecd6fc6cd8ecc1fcef2f1cc3924e55af162cf7e62bd002. 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/GBMA21830382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4555eca52db146e05a62098d35267e7961d5b92f64465dc2b333016a786d2bda. 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/GBMA21830373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c19d445c9a1f296e95d6391f44f64b68a2c9baf2d23c2ca24e0dfb4775102a2. 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/GBMA21830356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa686984b5f1d2dcd44a41f9f9585f7208d543cb45e73d18e7f3ca4908f6cff6. 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/GBMA21830353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344c33733ea368bf5bb1d37bb39dab5dfa239486bc49f12a24ce2b1ab6c2a706. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBMA21830349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ffb6bf1a83ae6b92895773f3b47971709dd5767e01dac6fb377c7ddca533ef. 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/GBMA21830348.