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 0x7d9c7e22e7414915ba1f8591331be360908809e2ff07ac0520674b5de39bd866. 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/2e66de78-f1ea-4dbd-b24e-2419dba52086.json and https://artists.proofprofile.net/proofs/artist/2e66de78-f1ea-4dbd-b24e-2419dba52086.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 0x5d334679300c0ffeaf8c429c4c003cba7e472666df4847ac9aa6fe90745f12c2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/JMA272005429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc06745bb19f3d435f87d55a0d3b5066d7e599239101e06b15f313442a5147c7. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/JMA272009675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac590f5bd9efa0c6528a1348d065f4ac1f60b8b84f9af8ec08e94ba70a95780. 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/QZPYN2116462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb83737302ef23d5cc671cc876255b6baaf86ababe4f45dd904ebbaa9c7ef469. 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/QZPYN2204612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0f6c04da433c2dbdda485dc80a4b3d2b75049d29a1165b1aa283e71dbbecfc. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZPYN2208132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfd9aa15b32eb232dba6a396a0c2abb3203da7a1da09c08fb937b7277e3021a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZPYN2210797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ca61261c019493c10341c49e2a4558bd462428246897b6e320cc6f073d4aae. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZPYN2211737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efc9b14cf308826c1c8e75c447c060f70cc5318507ec953724ce76dac5b30c5. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZPYN2361633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a6d4806da271d44ae9e3fa1e59cccdd34f47391f0ae0454c37dc021c0134f2. 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/QZ5AB2324433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62602f46c01115e7058b239dbc46c264d2a6a114344e352c85c698af11fb0c00. 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/QM4TW2390195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a5b533eda32a1435f90acd1f4ae8bbf5d857573b70b3fe7161a0b275693591. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZGLS2349240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a60812e38193ccf773b64fd99e1755434164b0363707fde4573da61b540c8d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJV2306514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20059be1f424175e81f114426a373d4e2652fdbaa811969118995222880b4335. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZNJV2395467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1ac4ece79275d541a5d1dd5d2bc0213e2cbcebd509d556e4eb5d08c5f672be. 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/QZNJV2383846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38af621b413aa332a100de584f32bbb521730f110573834cea5334e94be4015. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNJX2399566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc2ce30fe4a81f2c09bc004a7650a2a187d8f2b920bb5e1c5814731f97486bf. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTPX2302568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb33951ff50b9810af029e07c677512f52d3492ac705eb9d4bab8d3cb5077e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTPX2399421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc55a46a289226f1ff110bc396fae04415e4aa5a5405165675b471763b0729c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTPX2398909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4a9a256c7cd4e22aeb4826726c0ed36498f0c59e36466cfd2975304d11233f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZW9K2366185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79745763705f5be7b5f64036f0cd74c384596495c46fdab4e9a4b150ab50a5b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9L2332425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b58c9838f696a4d99312c4ec94b6ecb6d30c36f5c0c787410776034062c157. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZW9L2315904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7344bbe9f60e4e6cf1a59b1894784a871dba557fffd941afe4cc339ec3355001. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2412267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3a866e5feb2b591912f3030fa9728aeba726b1a7308201eb9ebb2402622ad0. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ESA012439069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6effa4559d8ccbf288061c40f81992f3f04b7e07540d49e522c3c8a007cdce54. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QMDA62438032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d341b508d9f79a936fdfe08f96e1e12a57d4c67c73091b784e64b2cc549cc00. 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/QZTPX2530711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90596bbc03978eb0144cf176689376af085e7495cd1cb4fe20999177859bc54. 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/QZW9K2534696.
Dysfunktional Family (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966ab1f4a1b852ef2b79b4bf3424df9d351b93ab425f1cb9397c33438d03c3c. 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/USKO10403816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117ff544d2377ccf4b57a26c229a9b0f1a810648973419546a2777bcc8b38f77. 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/USKO10403826.