1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4edeb88b9fd7374d604e51a8a765099c13481df77f307e67c7d465d8d77ef14. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25291ea6-cb86-4f7e-9f84-3637957dc070.json and https://artists.proofprofile.net/proofs/artist/25291ea6-cb86-4f7e-9f84-3637957dc070.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442d712fddef27ccc368525ad18f8ac19b9c28a7aa033d4e04eaa170e458aaee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBUM71502647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442d712fddef27ccc368525ad18f8ac19b9c28a7aa033d4e04eaa170e458aaee. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:18:04Z), 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/GBUM71502647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb0346958ed0ccda26e982e342487ea0e6e1fb7653143df494397ad291f2b67. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBUM71502646.
Better off Without You (Body Language Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9e26ba672d4d44beccbb868aa62462c572cd04e112cb0a2f2a43f9ac494851. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBUM71507708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88dff58cde02e78b3bf209631285d34cb8f2005fe23a669a920d70bbf6e330f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBUV71600388.
Almost Over (Silhouettes Trilogy, Pt. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe369e5d6cbf9ba731a68fb28d198bd963f8dd2a4fcdf718804cdb6e56abf83dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBUM71700575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e22e070fa7642ddb4b6461312904c5d82986dd4daba1c4994b7f83fa4bcb0b7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBUM71700574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5511fbde9c52e0d2fda301aa45d277e377470c801b3cfa23312a5ad9e53cb344. 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/GBUM71800629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480f2faafeef1423f7b293b26f955af1d4762f996c6a78a3cba7aa0ae721e684. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBUM71800655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb4687bacfc1c035275631f13ae5dca2467eb568cdcbf0bf538d49ce7583760. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKPL2088147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fc447def93af7a93aedd4d9218f03d0f5b04d27ff2b6122f333c98d4464f8c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKPL2002072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d346e186de742351b5b21e0e775928fe8328ff661fb45b2c632fbad373b98f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKPL2151760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc13c0f0b2e7867ecbc72b054abb574b76e806634ace7dc41d308febd9d77ea. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBKPL2155274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37c4c0c25a5036d17967265dbdd01431264d6b1c58430582097fe25af442b30. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBKPL2155270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaba43681a7d6859d9ab47195435c5ced4c672a6fb278e2360804e9f6129ba1b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBKPL2155271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff45f9ee3340686117d0dd6e0f3f5117da4b74c94cd97de9cc896ab395638e26. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBKPL2155268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a5d8a0211fae9610887438bf49ac81a2bc61fc54283c3af1f4c9bb3eb45227. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:05:10Z), 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/GBKPL2172590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf297c11c70600cb5c05583daa67c95fe8b58f53f0863ff079ca2f7ed8496058a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM6N22422335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea1a4a62ee2f7c995576fe3d8ea32aab01300056f0050abbc74a58ae010eb5f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6N22427283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc647d388e18aa690482cac4a15b5a09af13b35f50ab447c73a08effea5da9a8b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM6N22482040.
A Quiet Invitation To A Hard Conversation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea1a4a62ee2f7c995576fe3d8ea32aab01300056f0050abbc74a58ae010eb5f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6N22427283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae79be27d0c1bb7738f2412839965bcd3655ccca302d5b68bf0a3fc16c9a907d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N22482039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc647d388e18aa690482cac4a15b5a09af13b35f50ab447c73a08effea5da9a8b. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QM6N22482040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e655ce366b3d9deb5a21abcf1d883c68e0ebf0b21dc80c1002b1166003e0bda. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:16Z), 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/QM6N22482041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c04cf4aa82f20af371ee4946d49806c1abede00deff1350cc76cb8e6158856. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM7282491564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc278942983cf16ff0ebfc8dcf4074ae4d4dbd91a4eb97b8286733bfa9abf4b74. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUM71602494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dafa7b6654d1524ab7eb86525268ed921f61c6a385176a80142f3b26b7bfb3. 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/FR10S1861631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9436d762736a0138e9286bd3c8f94bd8ccbbef7e93f7f60d898ca1544cbf3b1. 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/GBEWA1400681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41eece19663a91399d9ba9c81357dd9b17355be707f718261150fa0b2fd4ec64. 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/GBEWA1400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4619d99ee7c420fe142a06bdc15abd70b1974bc1e12ea812e7c9ba9889a507a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRC11602820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acb05c536625845b6bb1257fcdd47d3a054aa12f514e99b4968dbd2b12d1441. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM71605691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd858e155b9f08e07fec805274d4006e72f970dd14930233fc1d1e72da7dfd57b. 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/GBUM71704933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1ac652022ffa9c0550f7c5968d49fadc1090c61958bd770e00efb66cde5647. 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/GBKPL1821959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e1b422d9aaa177f03db0f4af875c323c62cf43cd9076962fcac5111b5e7a1. 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/GBUM71601404.
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 0xe8ac575f4f3589f0f263b95f7cbad02cb72230720a04046aad68a954c6399767. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/FR96X2231006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e8bd789e5f928ae6e70553b283576672ded516bcb3268b1819ba6543b3d41d. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/GBUM71405800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c703dcb0a8e06f9671affed0fca104f4ed04aff9970f221c1d5070a8d8505c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBUM71804324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6142590aefd690613e3d610d134f5a1de20a2293ae6bf13ff82a8257b69f5450. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM71405803.