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 0x3e16dc2f7948001dfdbabdcb88249384dde491190f6e785baaaeb454367d6035. 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/bdf1aa49-a31f-4410-b567-e83255df3309.json and https://artists.proofprofile.net/proofs/artist/bdf1aa49-a31f-4410-b567-e83255df3309.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 0x4a4efee8deead7de88a2538a617eb4df402de64c0a571c0fcff81b0715930728. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DGA0Q2483375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd11e899ac595da401e74edc7e17c38e558f85ce50a39bc8ab686a3366d9c92. 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/INT982453297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f6e4214ccd396db28bc3fee9fd509a2f8fdff5825fe8f31795a0525b0dcce. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/INT982451147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2161f7df88f7385a73b82eca07048e237b841fa19a3f31c7621912401979bd75. 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/DGA092479544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561f94f7e2fc3d2686e97749b3096c29b3cb571837bb4fb71587921fbb31849f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZZ432324788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268a80f5c35e08d59527153a48368333879be126583b09fccff068059143d22e. 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/INL232454199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e335cac2004a4f25965b2391181a8cc8d7490e9c01b4e46b9853e4d40c1990a. 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/INV792403990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966b3fb51b69fc7e775533c3846f84197edf1535395c087147176619f075748. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/INV792403345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee440fa4627ed84a759f295eb0fe4ceb96001e15a227bb1ef7ebe2607d6b56d. 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/INR6V2501395.
Maa Raj Rajeswari Dakshicn Kali Barethi Ki Devi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04d6230fd8ac354929be18a6f5eca3c3544e86d7e2306621eb15a0b8d2a2c32. 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/QZZ432451593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015f335f5717c51799b34b9d3f362240800b5e871027e6fb6db004d7a35cb28b. 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/DGA0R2318754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c756a99000f62f8868e1d05110947e448c4c99f4fe528fa2b453d21e7cb788c. 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/INL232350670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd5932724046fe6500c47fff61bff1ca7035ac54171fbd5acdd6d15e3de8c8f. 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/INS7A2267021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde13284a765855b4a9f29c7efa162929c27eaa722a0981b5e10c5c0d2d17077a. 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/QZZ432358202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfd6649ebdfc0a1a2e5b1e200c750911563fd6bce19c8a913c52cda7132a7c5. 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/AUC6R2127578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4c3526992780af0ebae40f9ece66f763dd1301bb89e5e9cbe33e2052a2d3a6. 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/INS7A2421799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d697e7af2763008911e06239011451e7c5f3de66988cdb36868e544bca9505b. 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/FRX872537773.