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 0xcfc528b52ce648a2f3c8a84e96b748f754647654224a6e435583c4603a254724. 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/1c3bc823-543f-4c34-bdb6-13fda2095e08.json and https://artists.proofprofile.net/proofs/artist/1c3bc823-543f-4c34-bdb6-13fda2095e08.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 0x18fc82aa3924508adf19519dc85c974eb01529f63ac398343496eae91e4012ed. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZDA52225103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730fb9210c310a4c4b30a9f547d0dce2e1def7700af6dc0c03e894469cd18ac. 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/QZMER2296005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb49c32fb752f3e586b028b497e9c1492ae3e5604bf5233d1f52cea82d326ca1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZMER2296006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec672a526e0c64722dbe6e200652b4e0f9b21fc921dba8537bdaadabf40fddb4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZMER2296007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9153e9754d6c5da51bff468d6befa9f61195fcc172c820b78fe98fd71932b6. 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/QZMER2296009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4df74c9766e84712edc7bd5ad9f230e3b7e0ee7e79471afc0e82f59ccccb07. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZES72376006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed98524ca0f57729885241000b559ac735b66b6ac6a8032b0bd55f84112e2e98. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUYG1501043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e15b272c189ec02d499dfb3ae558d7d755bdb0a181156a4fa4afdaa5eaf383. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USUYG1511133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524dcc6a678b8aedc4d66805250c2206d97291c408fed7150b3010828a507fec. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USUYG1534585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf7d870664208a9300f4f446952e253fcf98dcbce87230f50d447a87941b5ea. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USUYG1534586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2068475d66fbaa45b7db0d72cde8bf91d84689a893af74f3f504117d9efc237. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USUYG1534588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ae4127ecc6cacae3f861a539c53c34df78481f90c3b9b59f9ed55e53ff6941. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USUYG1534589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e17af8fd99f87291f5e7da8b8b3abc1856dcb8ae70a6861fe159893de6e3fc3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S2509508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77225933d854bc386266b47135de180bbac5e8e84e2243e15b3a09ab88f327a9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR2X42555642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985914df1138484487f0d58fc576be2ff53a13ffb1d32250e401b739de562fa9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX282534814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deddf2d87e561ec6357d300740d8d7e8e09186d7326a44258cb8a0dca7c3839. 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/FRX762571168.
Lesa Baftkrak (From The TV Series Ma Trah Lays Kama Ybdo)