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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30ddfe3abb356ba3354f88e8d2885da86f7bd3116923fe6a42604dacf499079. 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/1df23807-f392-4485-a87f-6ad7c95a414a.json and https://artists.proofprofile.net/proofs/artist/1df23807-f392-4485-a87f-6ad7c95a414a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zehreela Nasha (From "Operation Mayfair")
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9efdaf21add7edec303ebc30b4a5dd06f8cec2c673252ef172d16755b2e31e3. 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/INS182300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabce191d90d635f9b5b2ce59340fd5cd200b701a9dd5c6d0b5497c682efcd884. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82116443.
Dawshom Awbotaar (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5527e09db7275552ff807c65546bc8a6f49cfa168bbce002f4ba7bde3677fe5c. 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/INS2X2327001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4b35df13b61f2c48e91f1df7c987f20291d10b2f68d783d3ae8e7638cfd2b3. 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/INS2X2327003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bba29a402971988f48c6467b74e11a3a17cfca37fbafd9c41f50bc68de3f35. 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/INS2X2327005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7375286e9ae25d878e4fe0ba28c2b4070e389f3a73e7735e5a74c12fae248. 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/INS2X2327007.
Aami Shei Manushta Aar Nei - Reprise (Female)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6446dfb213e2f0dcfbbc0cd9572419f90d0d68b0a7e002d23d0cf94633916dfc. 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/INS2X2327008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542c1c0c725c1e25e0d005abfa8cb9f21037ea1f453bd345e271aed4d8a5afdf. 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/INS3O1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6d927f9c50ae7ecd4533f6ded80e17e2f28d012c0db24feee42d0568fc419. 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/INS3O1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea0919e986c2549676b6dfd2d3aadb8aff5c1bbc02a22526c8edcd15249c0a6. 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/INS3O1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd472245ae01321d0c2e13ee0e652042b63e4f66accb07b98e46e542a59af0da4. 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/INS3O1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6300b96d8e444851f53db3db7580bc8ca995424ce745bb1b996830608b6f65. 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/INS3O1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5584d910c0187c01f4491d5fdf08f4e7f9583673b854c49347026f8bd260d1. 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/INS2X1800604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef51673fa4826e4e00c20a7b13cb2c73936ac8e083882ef3b6bb4c81ebb8332c. 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/INS2X1800605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070e4bf7c40ffce5e65fb4a32c7e0798ea428277dc114589d2aca99abe448242. 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/INS2X1800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8c35c8dca09f751ae48c96554f0d082b8d269eb0827d2fc2ddd22c68aa9273. 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/INS2X1800607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2318ca76e56a16f6de3eb8efe49078de8ec7e31a2bd7b2e271b7101333fef56f. 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/INS2X1800613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c34580e343d5b85bf0dc14de318709eb34007ba8b2c84593d38688f33f25472. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/INS2X1800610.
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