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 0x06a017305f697af6a270bf3b6912743c089aa05cc14c5a137ff7a5405af4074e. 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/4fa2171e-eac6-470a-9e8d-f573b7f738cd.json and https://artists.proofprofile.net/proofs/artist/4fa2171e-eac6-470a-9e8d-f573b7f738cd.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 0xc94aea5b90df8faa296d24027c2e035a4ab8f58d8106caae3534e8193403c5ee. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/EECO31800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053f14aa963c52bb9617f09deafe3060059e24d90d2cbc80c89bb146c65c6c45. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EECO31800007.
Rain (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5193a4ebe17999e07e0e455cbe8b213806c9b8af4e15936111927122ba1abe1e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHN62105012.
Sierra (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74931b40391372c6bdec3fabba5e03d3756f40d641281a13bba1ec689f2767ba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWU2210854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde03a98eae52625132e4f7ac56e8577fdb6058d9d7985cfb9bf3fc0420f455b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2210855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314813c4b578dc913369742c127b842629fc3224b81e06dbd47df0d17238cde1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWU2210856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c44cb958eab57426e879b5edc0f21cdaacb9158a99e3155e17d9f90e3e04a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2210857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a1b5fd631f71068b31951a89d0292aa3bc59249412fb7fea1a2bddf5b6f7eb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWU2210859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434fa4712ada3695eda0c591044ad978df770e1914956a8c417c359df5752fd5. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWU2210861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5fce5a649488fd99ca59f67921815f831187f48dcef5fb6dd8055bfbc7b666. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZHN92366015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a1b7f4d4cf5e7d8bb5d8a4d78aec93167b0f0608c7829c3fd539306c148755. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZK6Q2385774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6f9c11f3b7af784a759b1aeaf0635d0a262c3f6d47ddcc93376849ed6875eb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6Q2385775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fa0a0fc24d71faa352ca187a2acf2dbc7d9ae3da7ca0509678bab6e2907434. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMDA62395967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7f83ac7a207b51efe7cd1c5565f9b1f0f2674cecc4285efbee1cc08929aca. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMDA62395968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0aef7157e789b8dc02f63fa4540b07e16205ecd2704b5a39e39e777911525c. 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/QMDA62395969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4609e27e5e993d716cb54812f41d70021a57e8512837054527c0c2255a26a6d. 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/QMDA62395972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a7591ac643e80ed44a049f1887cda2d3065b807ba13b7af479e9e2a48289de. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QMDA62395973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a70fb3b3a15a2aaa4bc90866e06a69ceed66e1d3cfc814120c3ba491cfd7f70. 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/QMDA62395978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1ca01245f437d709c3167fef95b07d78381fbbda0a587aff48b812f166928. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTBC2319479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d958939aa1010e6563872d305ad9345bdbc2ca4b34829f66b844868c1e0843. 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/QZNWU2438594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda251071029dda8f2ed5a5e9f22ad616452c01625d4eff538d5d285ac4b232a5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB22473498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3399e92e0c9f47b009f2b1268a8e4cb98758b5c8e75b32311f2dd741f974ac. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB22473499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcc0280e871d403102687a182c80b51fa99b1a4058f32e92b44079c0d39707a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTB22473501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a71583c6e321d2bf142d1f4cb8dfb372e5733e1a72183e60a532486681bcc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTB22473502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde722c9654598746db2b5bb3097c24b67ea13d89b4e61fa96d1680700f496f90. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB22473504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b65b614a592fbe8ac6a547f3d7c69bdc2710fd2c97f2a4b2373bb83b8869b55. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZTB22473506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687ef027fa765aaebf96459d858c93e760809a5ba0617bbd15da86c1d9e7ea6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZTBB2403849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab03fdd781f2aaab4f175ebcbf6a2e7756485908679d388c87dc1ae8bbbaa4. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZTBB2403850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0107e213a89ad7600c92543c012ea2fad7286dfc34e4a89083d002303ed3a30e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZTBB2403851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343bf98e91774e565becdd36ab56ee15362dd171ad748008f730eee913f7fdbe. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTBB2403852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a2dc30a862ed76969f78cddc15fb7e5425d7c0461088481da93f2d6cb9a9f5. 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/QZZ7S2542831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dd3eb22ae3b4463dc0b239ae4db041a188ab724c09bd7b36dd7ded4bae25e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7S2542832.
Sunshine Came Roughly Through Ma Window Today
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0393b0e7711c6960ed10e6674be48b2450b709f8f9268cef005c40e3f6b5b56. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZZ7S2542833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3902998d58dd4a3125dd12f0ccc7faa966060f70f143a569b19420c6bd207f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ7S2542834.