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 0x26ec87c4a9fc5f9757a8ee99849d2ca29c9b7d148cc964194dad531927325029. 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/933d95e8-bdcb-4a36-86e3-dd43077a58da.json and https://artists.proofprofile.net/proofs/artist/933d95e8-bdcb-4a36-86e3-dd43077a58da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ATHENA (Soundtrack from the Netflix Film)
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 0x0379cadfd98a960285ee27ad33a1c077d61470f6fd6a82307ce450cdf642cf90. 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/QZ8BZ2202129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71115cdeb5bbbefc13c6ee94e68b7178641ef40f745232bfe77840a8e0b81a3. 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/QZ8BZ2202130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa72c3849d3c3917531af5244a715e60706981a4adad9bea378e8923445d93. 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/FRDWM2200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a66e26261d027f01561059967862aa77164b87f3462826cdf53937491c3004. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2202131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d3a7d1e625350a496722ed9ed3406d4b11eae3e6aeab333fb6ea62c6abda4a. 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/FRDWM2200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb933e6ca1999026026b8b71fa939e5b782608126e37f4d2a4d3980deee6070. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2202132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04797dc634d37f757fda138173a45fd3556ea5361cd10640a832bef04ece26da. 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/QZ8BZ2202133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf85cee6f577673ca1f83e763f8a2b1fb9f5d0d05b5190614bc99d1f45bb28d. 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/FRDWM2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d8d266e90e381ac39cfc3609d31fb1ff2d9238ed3628092bda7dd2b737920a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR8Q11600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5e7bc3de7cb087dad495785951538af852304d62d40f2c2a1116b9b5edc987. 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/FR9W11518518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67509afc1ddef1593e5c23e2f40a949949b3b1fc90394a6c9700267c4548423. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR8Q11500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a3c1de1645a63ad0d62717854490587c3d9546746bd952bb9cc952692c571. 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/QZJ842001015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316149134c3c1a62a8db1365f1e6a328c6003e0b28afa418665c0519452ac36. 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/USUG11501551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbda4c4573e76bfa3ccbbf6be03e1f9e8f29e7e82307b2fc1139d494f77234c5. 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/USUG11600380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2688be723e4f5a86cc2a91a0cf2f3b48de76af9962b09402198169fafa096. 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/USUG11600379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cd33c247dbf52aa8a21ddea86a396da88b651ca5adbe5ffe0422f156a0e186. 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/USUG11600381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8e1f4a1b490898f0e51a522722d7b46dd504f5fe238f2585c11782a2897665. 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/USUG11600382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a7a149d15f38012f654b7005372bf81fecdb8204758e5dec1cf1a40232d814. 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/USUG11600383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a7eccef3c4512ca8f05a69262c07a57087d092a09994dc27b38ffe5d879873. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUG11600384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8052a832ae26548b7b07014e8a1fd1ef92ab43bcbfe7eeb38a62368684afe29f. 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/USUG11600385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c7ac5c771aab80bab5c5f5e8369a2e2b29cd16b7fe8b68a321ea0df735cea4. 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/USUG11600388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddee8d278cb9af8067b00c433f50047c98e9a346b82741e840891d72276a551. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUG11600387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50483b1a0e407df99a04dbca5d109f7571877bb38bb4d892c3f7f6c1519d1392. 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/USUG11600386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904261fc9625bc2a08549d06a28512896be82ed9e7a93e760db00999e51db73b. 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/USUG11600389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5683c5c7577ee45d481c819e57520c95d9314a7cc78151edb02fb7d49a26f2af. 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/USUM71606848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602cab7661c4d89af2cefe5b0045bf69e2a8e5b6d8c7d604b06a8289521e9db0. 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/USUG11500799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea203fee401b5c8046387136bcce8c741d79ff8da5d0a0726a127b33de518319. 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/USUG11600601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dc43aaf51e73ccf7b66883cfc0e20e187b37f6f22385cf508c0adb971e8b3d. 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/USUG11500798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b777920d91a02cc69b3a7184e12aecb018a472282abb65789f637ec394347. 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/FR9W11601091.