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 0xa83ef7c688dec6ac08dd760c0109c4c8b1af5063afc0f03ae729d0ac34b67dda. 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/CNF121901429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2646e77e91ea8c6dc53de54245ef6ef6152f2265236ab77f676d2b3e6ab7af4. 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/CNF121901418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47f7ed2e41a6b85d97624fdcf991d5c53f15fa26e0827bab79ccbec9e734f26. 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/CNF121901428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6601493c50d843b8d9bcd6152bc58d39ad266c8bf99a0d33c73ff43e0b621ae. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CNF121901417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd4a60a491f6094354921754dc3d19b019ad4ac4073e30d2c772d1168fda01. 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/CNF121901416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597f8c4c78a748f5daf897de11bea8d1d7c578a5f4ca01fbaa81ff1ca17c34d. 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/CNF121901432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b5ae6456f36a962071fe27842cac15a6624a669b0d17dedfaad3b40eb26f38. 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/CNF121901427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cc247ef37946b6d3d2240b5c1aa35d38fc8d5a0a01c4ba8e44e1c7b9a689f1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CNF121901426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233ce126cece2bba52046b1d8f2cc1cc5e3335d4764807d43707437cd3898ea1. 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/CNF121901425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877299361a592af57116139226b7efef5a892b9df1c9df82b2b1097726cea757. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/CNA231801842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ee38d9a62b66de68c04a3210796912cca27fef720a3256afc3934cce15556a. 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/CNA231801847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4aeda115883b94ae4030a221b643286d3dde1d4cd31e1c5d656b082c47c788. 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/CNA231801849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9358344ffe765e24e2d89171f8a6c9c48cb7bcabdd891e4e8881f7e80b6417. 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/CNA231801846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7ef37cebfde25cc40788d00baa88af6d9e79ce9a382057106a7e848d4394b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CNA231801853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2483147c2b3879672de33db2d713716758cbc88d4cff65fa11f2f2259d6a519. 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/CNA231801844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fb42c34e73141d4cb1c2b77c072f79a319c7325d1312d14af92379d6a24adf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CNA231801845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f352527217034bb5a0fcf5d0feb2a8ae9eab25960ad2735f3ba43b746f4de15. 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/CNA231801851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c591abec003df2bb00706457334fe09329c81b9ff7fe9d912bc42fcbe68c634. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CNA231801850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd55dace86b54fac510a5e7a30e9bf34ce109a9fac9f587a1f2db283c61442a. 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/CNA231801852.