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 0x4805b4fd7f7aea36ec21b0252a1bfb450f6d57810e309a87a867d2892080c67d. 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/936934b5-08e0-4816-b9f3-3d30d9654c4c.json and https://artists.proofprofile.net/proofs/artist/936934b5-08e0-4816-b9f3-3d30d9654c4c.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 0xf71f7e292ba2682394f44465b74febfdd518931c711926565d0a071552fef83b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/INS189812704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc0440009418bc729ae7488281cab31d11817b172287d9595ed0e8bc74460f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/INS189812705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882c55db8712f92309fc5e704047304baf37ddc23ae68639e4cf4053be4b9206. 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/INS189812707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77d582692734202a1dab8374661a945c4680856f54091d7498dd676a0caa6c2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/INS189812708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e33d8b948f77fc64903c01f3f032775de7b28bbccd0faaae5390f080d2645f0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/INS189812732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d3f5724e36de15d4b1e7646c127097f23c9de3bc4b6134bb0fa04dd2503f0. 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/INS189812733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5d49a34b070303f55155e42030c56d2a7c2f7cfb3750b646bc1f63440dffad. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/INS189913256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a92c9507eed1aaa6f411ba657a0d1da41679db4d00491b7f9a99166e6745859. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/INS189913257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8cfcd46269f0e62a54f9b677135d68a6096b61fd1debfdc9928539774c6b5b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INS189913258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a75070ba21759601c942a2810e575a15a728fde98a4d2c5a177fa87b6fbc67. 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/INS189913259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf9817feffe54a5596bd0380674236df7141402365136beee06fb117759f95a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/INS180136380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947cc6226e34f06e11cbbe1f967d29730c0ba6ed34b8de5da4acbb08c974c5ea. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/INS180136381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d07374b6901b55e810027c190edbc91aad9704a5b93446b1e5931e1865fa26b. 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/INS180136383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d9a06d8f3418ccb3ae8a8a030185d8d6e63718acd304ec0aa268208c6dfac. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INS180502963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfc37b105c356444ab746addac55eb688bb3f58f8fce06edc96ad1a5339193a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INS180502964.
Gagan Mein Thaal (From "Nanak Shah Fakir")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8b70fa4b2a8ece07d637e819792e0ca020da67c8e59b3f01b67f84dfa7b737. 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/FRX452492028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b255d0a68b695bc6d29be4affdc2a6794d569adad78866a5912a1023ad03074. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/DGA062455465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b4b7f3c7ee541022d3552721ef7ec1a32da5ffccc9ea9e013d9ed92255c70b. 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/AUBEC2531891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2441428d45ca19189b84707a31656b32e4c8a62c3764d82b2658f23a38660c. 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/AUBEC2559543.
Chaupehra Sahib Dhan Dhan Baba Deep Singh Ji
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa62ff51b772214a254199908c809a0f58f8bf553c1b4f1bd6f452584caf1b. 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/INS181800818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e52a1525cdae3752f6f7005039d361ad89a384fc1ec929e9d269cce113894. 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/INS181800819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307959ff31f06c18f61dd52cbbbc97a4271723b88842b017b10b2187ac44fb78. 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/INS181800820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd572900eb6081471665a7c518dbf9e8296e9b5fad8467c5ce1f47325cef27cf0. 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/INS181800821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365f199e5e0540f9818fffb87a62bc49c60c28abafc9a9d624945cfdba4e914e. 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/INS181800822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e9a9bf73d9cc8f67ed94894fe26188118c98a2fc83d3e6124ec588b972bc2d. 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/INS181800823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92623a969e4d3561422a270f7bf159afcec81212fd115280e87df0409e30ba9e. 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/INS181800825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7270f93a34ec4c4c44305a18b38a892e746fa6fca34e113318167b07074b4e00. 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/INS180465804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fa58de0218b88deb119e6dd963ff21f11c5f04966d0c4426d336a48e30cf2c. 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/INS180465805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc1ce9e0d94bb0c794449d766b7b0708a161f640c38ced8c3c66cc2552d2d1. 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/INS180465806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b899e48aaeaa59125b3494f4b193a454085b8b474e959a0f02951abf3e8740c. 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/INS180465807.