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 0x2998dcedf84f513df3bbb64514fe5ad6cd7a62e4fe7f195a1d504e20123a0d25. 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/fcb27f16-a815-4f94-a8a6-382fe0475af5.json and https://artists.proofprofile.net/proofs/artist/fcb27f16-a815-4f94-a8a6-382fe0475af5.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 0x9de47622333516e46f617b4ba3ec38f4846655fdb5ff1f923b2c8ae72bfc6324. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GX38U2155093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e06c55c59f328bb604a5f44fdebf85ec8e76ba410e1413b38e544622f2f8bd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GX38U2155131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec28711374a0175423e3c9b31774b26ff9d6d87a45aafa6c2a40efa0b637b32. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GX38U2155156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e77fe8baceda9538c4e15b968044eb32be880d78d34fcc18ce9a69ee0cd5050. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GX38U2155170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d48c0bd71c57805b93248d5a75fc5a8481fae0d30e85c623cd1c52097ada4b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX5MY2112536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca66c00487ece2e5bf5711bef57fec12cd3abe096e1c0654febb648ddf09ac. 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/GX4R52279861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66854a0beb1dd075350329ef7ad563ce63e0d60fde0e6a3c82c8a1a29d19d199. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX3HH2273108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c70cf959de1790ae6dc371f791d61b8baf1c8602343d60fb7c43412cf4ec346. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GX3HH2273148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddfee7c71a7f0eb0f61aaf1183002f9df3e91e89255695a6fa27b8dbed35d85. 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/GX5MX2264057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39e7678c89b04d1ccce198dbc88620ea853437f03b1b265d6bf63279696800f. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GX5MX2264062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6489eea115224518abb8a402733659d0785f12929d4b482b3db8d7529d507669. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GX5MX2264067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f86047c6309a703038fdb97e2ea2a4c438a4ac22fe98c2188cea2c062826d4c. 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/GX8LD2322237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500323907819fd9257c2f4b069b1a1fff404b1cc8f4a683f05122c1f1ccf586f. 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/GX8LD2393741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb503ecd86d40bcab222356e4f8ff647994abf8fc8a23b3ae25a34bddb811bb76. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GX38U2338003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209fd7dbfaca3b9bce9c904e894e8ef362410b16210c55bb6d746bb66821ad72. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GXBDS2323789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d97b06372021a626916e1de5efff782dbd985bac9da255af522cc6be6f3736. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX8LD2456779.
Best of Dj Slikour (Road to Collection 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d339fe88111644d1a43e8b5f94d0b0960d7539ded187c7b3427a388331dfa9. 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/GX8LD2486222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6623a9ca66ca4716f3f5f3dff53e1db7a7811caf570a5a257048b774fdb2092e. 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/GX8LD2440920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f109f271e5ee58d8cf062a52aff9fbfb34b21f9abb46d3cace4fea6ca87672d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTB62412688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28580397889d2d152649b516df48caba0c25b0fbda34446ace6d8a43408a27ba. 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/QZTB62412691.
Hinw'u khensa ari kwala (dedication original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee032a4b49856b438cb11a701d036a2aed958cda33c41d939b96ef94de4cff29. 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/QZTB62454103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b829ae16fcd74df2f89e31175d93d4fb86af992de829317061a8750d4b0962a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTBF2493561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e6475754d611ab1f2269e0e32828bb647bbd92f08278b908a10afab5190c2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZZ792485543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e71568a72ad10df4fb26b1b5092ad813d7aa1ecc02f3247677c05f1cf20ce7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZZ792485544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd1ad9fbe1e5a89d61fc8af06691cd65b84a7a4566bfda65d18a74398cf7f3d. 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/QZZ792485545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3079e6d78446231b0cf832b5322ff78bb7b83aebf72341f574c0dbbb3597f87d. 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/QZZ7T2405441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bd28013c6751421f8572bb35756a121f7c645437358ab90b7f425ab7dc1a76. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZZ7T2405442.