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 0x57d726b520b78ce69aa2cff2e924f25a064b8601ae79441009e2e1c6ec95e69b. 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/9f1f28fc-974f-40fb-a9d5-77ba75003fc7.json and https://artists.proofprofile.net/proofs/artist/9f1f28fc-974f-40fb-a9d5-77ba75003fc7.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 0xe2735d67abaefac66362f45c4206d30117fa6543943c609461955ff66c837d96. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/INH102100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d06582a4f7be77eb87506dc5843ed383c9cd350a67d6a2549d37bdddf771f4. 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/INL239004932.
Salangpur Ma Kashtbhanjan Na Raj (Kashtbhanjan Hanumanji Bhajan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28035324ffe469ede9c6b8e54941e1c0e02c4f0d10f5ae3bbb801a01577ed75a. 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/INS180702926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128755a3f5f1e41516b8430f65b646261ef07f4c834c3c5c63757387a3269192. 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/INA210900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c34087b45f175379a0ac13ff1f713db97adba661bf911759ed6aff96c608769. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/INS180354898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b729cdcd22629028cf51d1d172fd456b6a4e8f84e082c5d3b858698d7ad7009. 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/INS180355161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f519d0c8de4e18e878b6bff3267cc4b774c0b4dc8e9d3378945e4dba14baa5. 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/ING642501899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59c97b34b9880a603dcb8f34182067198aac85fe8569e0da8633c6fa4288342. 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/INN242506470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7131fbaba3f37eabb6c575a45e47984bc7a08c5505917a5a5e8c7f73a5b30d3. 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/FR2X42541267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee73748e41999a7a29a46d3216bfd5c89bbec97fa23fd5b2cd9d6849329f989. 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/FR2X42529212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb221c338a9d5c6ea4f8fc6c9b79e2ce68149af843f9f797c9e399074048fa1fb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INUM72500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e61b8ee23bbd722f005e8104ed685f1f984b1b9915f56c58ffd89efaa65c28f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ING642501015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27c33c356e4cf82e36bb912593679dcb82c4c959bd978e5c347963c8bcfcb3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ING642500887.