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 0xa194d1ce26c2b4b512e9b15235be540c08521cc363c55c31b61a3afabec6d35f. 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/NL8RL2508342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f0bf61ffe830a07072c8d7663a9c0f9a5a1198fd34b8326c142d51ede2fa78. 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/NL8RL2507455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77b743e71adb568c5daaa76e84839e77e687a33376b9247c039d7722024b035. 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/NL8RL2508339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63861904f7535f611745ec2131d12b290dac66a869a88296f223e55b2dad7be3. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NL8RL2508337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3640e8ff3061c2edf235dac04f5542693c10198f545fa02ddf0fc515eeaf6831. 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/NL8RL2508336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5736fcff806508939b1ced753e1fd56ec1122769e0f2f923653846833a037c42. 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/NL8RL2508335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9454cd0dd9824067b4b245197a662e38f222678c9feced050bdf35473f26e1a. 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/NL8RL2508332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4feac21f92d731144a40e2c2da43223420d2a741deb9992b799b32afd485cc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NL8RL2508331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9c93a1db8b095ecf94ed4585bf8c4a19a4187fd59fd8c645ec663ddfec3354. 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/NL8RL2508330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb038943f7d0a98f61f9e269e1125ffd1c9c4cfcb156a8dae125dbbdd7063ca6. 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/NL8RL2508329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ecb0c3360079a786438e0fb7d24003c94d2ce2a792db8729fd9f00e5150be. 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/NL8RL2508322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664bf296c96ffa057a490845c7f3fc22dfcc2d6608b44c66375a3b43cba6005f. 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/NL8RL2508321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1cef864acdb7c835d008595c40cc0ad35ecc4040eb151c2f62de62cafb0074. 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/NL8RL2508319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8cc8bebb96aa45e1e663da3d2da99f83f927d4697bc8ea18287f83924c2d60. 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/NL8RL2508318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572ac215b95abe1cacd038b655f447cb9754892186b3f5ea7dc2d28fc14e56db. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL8RL2508317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc718bd8c468cfd30850f7810fc74dff67bc075de4f5ad59bc266f2a6d3ecf27. 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/NL8RL2507934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05017f4b8ddb24850c7c9833509e4de94f3fe2e8c6678fe6ef5244c464b34ecf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NL8RL2507931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe631d39c7b832b0c8fda4f39b16d069d4aaebd1a9d30fa2c6b099b6d599fb418. 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/NL8RL2507928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05346f6fe8d253487787705cd75d97f311a9512c59ee357958d3a0951099c7ef. 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/NL8RL2507926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc1a24685a452dcaa05f9d8d3bbe5f0bf82c63d1e728dc0790a414fc106485. 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/NL8RL2507924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde239cf27465bbb9918ac8a33ecddbb8eeeab438965756bacceb22180e225a95. 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/NL8RL2507923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf270f11c58f2c5abd249a1cd42cfdc700d5d85f8b4639d023512545f3990ed82. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NL8RL2507921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc1adc2ad0dbcbf11d27bea5bcc420838d1e6158f2b8c713fa7b4b05bd4fccf. 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/NL8RL2507674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f04b01c769e26d37f87ef20d4fdbdf1ec44ef0bb28d32eba1da90ae1d3ea39. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/NL8RL2507670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90126131cbe39acbf8acc2bd058e1120aa8db903a9749530e7bdcbe03eb49e10. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NL8RL2507669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b8bfaac2af3114712e8a4b2ae60cf442117b058eb69e5ce420c77bb861fada. 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/NL8RL2507668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a07de7f51d5cb0a7f5ddb48778002831474664e12b4d69a659add5c6317110. 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/NL8RL2507667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09546d084c7e7d431cff4c86f61648d2d4cda769f9b53449981529c7f967b4e7. 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/NL8RL2507454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc420e60b3eb1c3e9953e41008ae669e1feec90d54fdc65632683bc284ba8258e. 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/NL8RL2507453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6261b33e7c21c01784a7eb0e65d85d5ffdaeb1e33a42d5dde2153a7eeb72df. 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/NL8RL2507452.