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 0x60e3b44b0c6656c37856984e6197f5dfdbcfcac7054923e6ce8f86dc480aa58a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZK6G2256978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd207a24f27e16ecf658293512dd5f836f7273a209cb0e61135d36c87b27fd6f. 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/TCAFF2066168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe66ea8853a6fd5dd91698e82579475f0b5de870651714215cfbd358d38a43d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLS2339692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a782c937ef34b07b4a399fc503c6324763b0bb8f4b2eb8113f72f3423fc3c. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZGLS2339693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4917c04c447ef4b5d953b7d0537eec7793f052620e9b5b1e63f52318b078b2f. 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/QZGLS2326373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52716e55c59a6ae92dcb622ff257273fe9bc72e973688c95c118c2a4c64432. 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/QZGLS2339695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5358dfdfecfc4783a2d38322b8f9eaeedc4071964ed655b9fa5e671b0bd663. 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/QZGLS2339696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b3e673a9120055cb85306a03bc0dc14a8fd376465381687e226db810a69921. 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/QZGLS2339697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a47d543ee6c345e81b2bfde334310636947a56af0b9b62b765c43be88e846f1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZGLS2339698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ef3454d0f918c4ac890ef954385ef9b30d560f1e66cfa2f3246c6675fd44ca. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZGLS2339700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639c7aa0af99c054e28a3506d2c0641ab0c8aa59f9e4366b2460e456b37281cd. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/JMA272005536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786a834b3aec2d14c27401ef01fbdb4d14b7874c8c9c45c38bd82744990aa0c4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JMA272005538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82977e06052dbda9d80817fc8c17093eb99ac6f3185f6d2f20b28feca4964862. 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/JMA272005539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070c357d00344b7da03d7371347986433ee07725517afa05a6f8ec1c14b10ec2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JMA272005542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b7d9b76ba3b2199e063e7e0f3693643c13c32c3e728eb86f3f8b374f3b55c3. 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/QMFMF2360314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7910c7682a8a772e19d7350aaede20a7be2447b56fedf68f3ecddb4b6dd2364. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJY2433690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc10aea182c67a8ee7427c8fd256828108e56b18c35d45234c2ee25ae5d8c7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZNJY2433691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f97cc4ce169f5e766da1c98e696709b33d018cd8ac147915468112064b4d594. 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/QZNJY2433693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c671dc8860448e71e633dfc56446f281ac09303b3f2b2852d3859c78ca53306. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZPYN2100261.