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 0x415a3b618387e605de8adc32433d51cbaf4ab681570137fbefe9fef682e70ae0. 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/NO2HB1000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984a8f37d6e2cc15e743f9e1493d68467f39f1a684bd706fc65a4af253f7dd7d. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/NO2HB1000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c3b5e859f6d369208de2f1307901d6647fb103544473e8f341ac294775eab7. 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/NO2HB1000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa454b50a93a73a87c890f4d9bb0da87a10369e4ed6f8dd66ccaadf799c688bff. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NOFVV0729010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84f03e4ffffeb22f10d1633a6402744ea3b7bcc838b26f6af13e6e8efe75811. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/NOFVV0729020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515d1ad4d7997548e378ee453b5dab69ad01162df2aaf1509b790275f48fb812. 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/NOFVV0729030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb238ece14606dfeae62a0b2c51331999c23f645f0f9700d893b8b2c5cec5ea54. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NOFVV0729040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d3e92e8bf1795ed032cad7482dc83acf6c0031444796c2eff53c139e9f6ce7. 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/NOFVV0729050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afec723bd6d84ed3cd9f8e940d0f1143383d89464ed6500d2fc6795968fe305. 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/NOFVV0729060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef0eb5cd770305951bc779e9ad8b1fe10293c08f4969eacbdf05ab6a2f570ac. 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/NOFVV0729070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374eaf29a4af5c203279f5bbc3a77a53fb98d9c737166f01428f3735768445c9. 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/NOFVV0729080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b79bb653a7db13e536492885380fa63880139f266aba0d02d7a8f9608bf7f3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NOFVV0729090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fb618e31390b5b5e70535479e98806b8d0cdba56147bfcbddac596f55a2502. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NOFVV0729100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca31a0bdd2e549b36ccb9c0d33241253eadedcce78c9e0a4776a82ea614b6d4. 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/NOFVV0729110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac19fc619992e1e3ef11bf8376d5a66fd159c39c7253a4d3cdc0faf19ce6f15. 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/NOFVV0729120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0315e4d08361e00a3b83ae1172bf2909c134838a0267237079e1952a034b4cee. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NOFVV0729130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202cf5587feb735b0d49b31372500413cf245bcc0b0e515dd59607de83855cb6. 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/NOFVV0729140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d4b186b29ae10ba0eff78ced4dafca8b43450d55903d345c8d70cfa17d55a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOFVV0729150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9099d0913bc00dd570d5d49ecae994f2b2390042d5560403c4a412121c58c275. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/NOFVV0729160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29382101716cf2716515ae058c0ddebe2b2fb6cd228aa8a09a4530ab853140c. 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/NOFVV0729170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ad130cd3ae59ca73a16019270a3e896cee3095d5dfc29415934fd0ce1a9261. 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/NOFVV0729180.