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 0x728201ab2fd46fb3b1c9eaef61f67a89b7f557e964e3d3161f9b72d561647a1b. Chain 2 (Bitcoin): anchored in block 953943 (2026-06-16T11:59:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/217aaeda-d2a6-4a2b-999d-e732c9515016.json and https://artists.proofprofile.net/proofs/artist/217aaeda-d2a6-4a2b-999d-e732c9515016.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 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.
Bhai Manjit Singh Ji (Sri Darbar Saheb Amritsar Wale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e85598c99267a8c5f3975cf3d9f24160c42c2aafbf14780ecf5f21fd0044dda. 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/INS180465808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96258a1ba54f7b290fe81355e7f6c2b12053755c72b23ca4e18ad1f9a7537d6. 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/INS180465809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e90b43d63a8d9a22882252dd4dc252def735c124ccb75e16b181cc2ba50b03c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/INH100904890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048b349acffdddd4ef74647fdcd9be0c6fb0b485351af455e574ff319c2b3a8f. 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/INH100904664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cfc318da9fbd41ea59668e3cff053844102617e1353a6766144b3d93bdb956. 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/INH100610025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f69eaf69da0ac18e6cd95ff32b061d9d2513428ebfcc71e463d41414b93794. 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/INH100610028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de78a86dc9b914c653731bfb1bb00df8f647463e4f85720464997e41e461a3. 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/INH100610031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff948012fddf0f459dd3fa74a874f45364ae3a6268ac43d9fa077fcbdbf1cd0a. 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/INH100904896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6519eb49a5d271dc787968d08d6d096e944a173ad4aab659989813835051f5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/INH100610032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c4bbcfc996d9f1710efca1ac46e29f24d3aa92da90665f7e733996f6b52783. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INH100610029.