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 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 0x06a72b5736ee7403211049f5e7c8e0d351d51b29d625c2619d32f0cf77fdc99b. 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/6988f60f-d651-4e41-ae72-c788c04d7e2c.json and https://artists.proofprofile.net/proofs/artist/6988f60f-d651-4e41-ae72-c788c04d7e2c.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 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 0xf36ab34c2a402114cc9cc6df63cfeb5ea80b950ddd858b2fbf8c6d058e53c1e9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCADQ1842558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a0d36303732b56bece5cea24e7c413d436f5a7bba0c08014cccfdb9253a1f. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TCADQ1865407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9421ccd3362f4dbb9b36e5c95b52a73bd1192b7761ecd1c786c39a283e989264. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAEG1997434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd414f0d09a1d6d0d54dcbc3aa7883ed38e24afa30ef59621a43d273e87ce07e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEM1978690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf678ecce72cfcb2c251db7a44325469a741cd4cda292a58f67a1e2fb7b513447. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAER2053728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ae3c6605ef657e1475de69888f27bcfd9d9aad99789df2d71ec6aee24b6de2. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/TCAEW2001747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f71575a68a68d371c0c9c7293bae55db2cca4e094168d0dd6111e36dba86bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEW2001759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc8e72a469e013f25e0e8cb4fe901eff28cb9ec1361446144861d94d22212a0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAEZ2008897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a226e4f330d8becdeb0e6af2990d44f6b0b408b4db9b4cca5dde5aff2b0c51a. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/TCAFL2105507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74127aeb89ef4f0f66cdd6d7dc99ff3565206a1c8e2a8db61afa054014f518e2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCAFL2105510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6679f57305a4edfad3df000ce5a1060d59481992eeb0d53f77f21e18fd887b. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAFL2105520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d33d8a8962945669f860b05dadb3c1c72dc69e8da6b85bdf528223e6eed6598. 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/TCAFL2105523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a962ec5f08c8ce3b206785be321e0e5b08cfbd0c968e6f7b06232fb34686e4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFL2105525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01c7cad1cde87f6d52c9679630ffd18a37230c8a96d15347b293351112c69d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFP2157360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa67854acbe9534e4c99240a9c7869f212f96eb858a89cd8ec952cec2808436. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCAFT2109253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91338ba5d8cfc3ab80009b72c0a4c2db4abca823c7cb8157fec2506763db8b1d. 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/TCAGB2221942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd04e20f3dcac9d5536495bf18db138bde33b84a65d29a6730a615e550cf511e. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/TCAGJ2254288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd8f1087f09d66ee2f873df155af4a3427134eca0670141a25379a934192665. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAGU2367390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3422cd4834fee7997ee14d6bfdd157312e9c5a9069fe9ced8b02b4dd2724e7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHL2320515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53ab6f9a1c124403e8e02e949f41ed4987108c74f7324aef62988e61645ff14. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAHW2455880.
The Unnecessary Kind (This Business on My Mind)
The Unnecessary Kind - This Business on My Mind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6051a51e682f6b27a218ad8c1e5102f0cb935ff8ce6117f211d668b951f53ed8. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCAJX2522263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c70ccb7e1c6cd72134ab49262fcc9b477b4c689d30e4558fc4b4b3fef972f8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAKA2503807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f40bac323c230d3e1d47952ce5641e7717451ad9f838038b476502ded5329a. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FR7U62100119.