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 0xcdede2167854aa6b825c172e33f007a9f28459cbf36c33c47cbcf0386a49f95d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TWJK12200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbfe30284e5452df026fe1fc020342e5cd6a828dab6fe5f967b4667de34d6b0. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TWJK12200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c60e6f3c0a33a8c58600dc7141cfe01b8d77f62fdd09e6dd556aa6d14a5c558. 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/TWJK12200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8243c9df56fa814c5ce0de4fb49b8a9f1f8fd1b60c2de67531dd0338b4368248. 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/TWJK12200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fe9bf8325fbbda9dad8682767f3258770b145ea4e008a47153c4938d1247a. 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/TWJK12200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2df98807cae11a2ccd224eefc914ce166cc53cd11c71454da8abaeb6d87a30. 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/TWJK12200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06d5699a59188b1132b71363e6e1adfa9adf8223014c6c53724a3333ef74430. 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/TWJK12200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078e9072e723f1673395cae922a8e0569b5b74a3f863dcc36935afa3f419d888. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWJK12200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76637fe467f1106eabbe25764c35ccc53920633085c6ccc765605a3ea571a87a. 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/TWJK12200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1e193bfca840b60d570ed3bb5a1d94d3fcf7557f009acbc7084c539373be6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TWJK12200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25321d6b632e2bffd560a7188c4e31ce81c74a2808795d122a0e7b992f3b97b8. 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/TWJK12200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c3b59974dbd4a716e326921e900da3592333363c111635ab9128c1f4daf794. 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/TWJK12200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d170d512986a6fe6fd77066dc8323600d26265abccc8bd87294a95c2e2353. 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/TWJK12200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a43a2b21aff0309471b94141adae89a129932c669628429f493dc9f43cb23. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TWJK12200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec3eb29798f18d24fac3b5ad266e3434dc0bb25abdcfc6300266a9a50cf0bc5. 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/TWJK12200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a50457585eab417b849a2a92a69e42fa74872cc0445e12948319a42cf63312. 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/TWJK12200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d532ac52c93d81a76b33cebab8a026293c9cfc23ac64a353ea6a221a2bb3ae. 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/TWJK12200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bbaa34a8692d7dd227883ba9d2e81f38e9f069e255528e03ae621878dd6836. 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/TWJK12200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711862b1d6cc74a8ce1b3d02334a4afc3ce3359086d75d38e20e187a140acc16. 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/TWJK12200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969740eed79e1c6b793caae0b04d4bf2060db96d454ec5ee10a9b0e56382e984. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TWJK12200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb761a80ef221697a8d44469ad24fd7dd607d1144658d6b8f7fd05f6510fb829a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TWJK12200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc616975b2c0775f745e948072ca62c9dc037b80db050087ed733ff7c843e4dbf. 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/TWJK12200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45fa3ef568e18c9673bd59475331bddc2f5c79298a25c8160fe9499a8b033c5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWJK12200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d26a805cd0e94caf74ac9358e0134b823f91230b725ac6fad9737d2a4141047. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWJK12200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030723eb62e2d6fb74856db65b75fb031760c6dbb8167de0ee5c92c228e0b879. 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/TWJK12200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9e5b35ab6244dfa2de5e86236f88b7815a6dfa08f3ed32b94756b3d382908b. 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/TWJK12200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ebebcd522c3a1a7311ff973c3cd049b711c2c8ecd01c297367a4905a05e2eb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWJK12200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04339c28c5450634851e11256a6f27c791127c6e5b9d77fd0488b30bf365e6e1. 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/TWJK12200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4224de1cf9136f304f90c63b60b454ded64553aa26697deb78f8d2567d276a. 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/TWJK12200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a785e69291247e1668a9210258e7fbaaaf2d983057699b35974984e230d245. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWJK12200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901684513573ecde512fb606fb850507e5cdae5254192d396420e00bcdeb0f0b. 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/TWJK12200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229134d0fdb91ceae943e095c3077365469537eb6631014632045e8b53a4b56e. 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/TWJK12200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6cf87b32f50999f606acd4a66c5df6e335b920f023d0661061f774b179738e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DGA0H2495243.