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 0xe66d87e88a91629ac9cef361e9bb867653eed9024b64d448bb58f1a56b7d02dd. 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/GBMA22127685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b350503f95963db7de9f2dde1bcece97c8c07df2e39c953daeed076b1d92b4. 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/GBMA22155273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb00909aaf8417d58988cc11a49b77688f04fca6a9ffb6e66aeeccb2c408c698. 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/GX3Q92183560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4a46c5cb9d43000e05a385f34a3e5148519cc44627b1b1daf205fffc8f517f. 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/GX3Q92183561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed41281bfbaf6170fb3dadf1759c4fbfea893a99b75cb2099fad416bfc43fb12. 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/GX3Q92183562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123a599d0a68edc277d2cf77ae53e179891dfaf7e994ea0fe12ab3a5f8e63d27. 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/GX3Q92183563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e9ad2d6f7eb678700cde690f47608b5fc9eedaa2ba64a591cc5dec3a6f0abd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX3Q92183564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8379aadfd291577fe1564f3b735afe974c34ae29fe2ed04cc769449cb51e9c. 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/GX3Q92183565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656afbb7c39e4d51efd05cc58971cb0987324d9784d663ba520dbd83f2080df2. 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/GX3Q92183566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f9b53ed311958d893287c09747fb8f766911fd84e0fa492e272ba07507a4f. 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/GX3Q92183567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8eb9258e960a3f4dabe37b1e4c3759afea7b5c79e23e5ae997e8400fa5d888. 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/GX3Q92183568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf760a50b6d17782b15b4dd3745b7ebfb14eb7d3448c07aed796daad4728164. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GX3Q92183569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766866dcf2a99e8da1267a179faac2c03edd03ed624bee308f5842bfe5a1dc9a. 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/GX3Q92183570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0fc1f8e74281b3c1194d847fc976d87c51676577421f2277f72f3f8a4a5e78. 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/GX3Q92183571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4468af87a8338e9aa758256c70e2e28b957937b596111a798e5b9eeaae5f8791. 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/AUBEC1913874.