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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88944ff54c9b8de82908f1ab684207d8b711539d01e95ac6f2372e7a0ca92891. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5a10e5f-52dc-4a8a-bf5c-dacb7d6f610c.json and https://artists.proofprofile.net/proofs/artist/f5a10e5f-52dc-4a8a-bf5c-dacb7d6f610c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cbfb6cd10bb22e2f445b7a53769f243ba53f4a8825a59c450f7bf3dd394bd2. 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/ZBF402300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dbf5f0a4ef8dea6c31f9d55f5ad56f4f8856fe5cd07a63f14df0604ca296cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZBF402300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9bba3586770c469c2cc0ef38dd06f85c5dfb34116b1211e666abd6be12d4a0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZBF402300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907cfa5af9dc513d2ce38c753ec457c27d479ad7e89f2bdac060d9696fa3eb7f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZBF402300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f94dd71228888c871dd3c26357e6b7321fe3b190c565e598d9e2bd1315dcddf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZBF402300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7593808b2cf2f202ba662539f2e7c28117c50f8eadb6548c1559bfb03b8cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZBF402300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa180cb18f387f3140e6f2d33d5e547d6a209e57fc970ebad1459bbefe0b23bbb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZBF402300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847c214692995255ba21701089dd47ef08e2f6fe04226496b3fe61b4ebd1c27d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZBF402300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef15b0287f9e22d539d3f8fbb3eeea332037604dc707dd6431de058beac334e2. 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/ZBF402300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34932387e70421d3fd6023e81edb419374f8b6ec4f1381281d6a94d837325649. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ZBF402300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5849b5ebf81647282201648180db7c81bff513f5b029a0f2ca3f4a39e5898074. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ZBF402300012.
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 0x24996a1a89aad51c595d6a745b7e26117c1b491f20905ac7ff19dd1dd1afb074. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE66N2372670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a66a5a1e332428566a9abb053e66a1fed663492d7633b4991dc59798635133f. 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/ZAY362200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f956fbc9b9f3c154edc80dbdf496283e9d00430619532365f5a6b2f437d5c2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBSMU8377397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11837803171f259b00bc21bcaf03ea67e8b007f2d3fac1dd04d9f6593d53b13. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU8377398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5d8d3b31836be800592cd72a2f592004c3d537a2068b94fa00bc564208e397. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBSMU8379473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e37cb56c90dbce6c27bd969c0016e699dd746cb083ddb941f5f747db13fee91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/RUA1H2446089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5cb739cc54238f2d0ef40427989333cfd1512aaf8da3a922ac58c7c6ae13a1. 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/AEA2M2415803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7fe33b7cf7ae61d2f43a3baca576d45d7297df32260a104534a5edaa86bc8f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZRP42375533.
Vulela Amaweekend(feat. Leemckrazy) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c1879f0d031e34ccca1ef30cfdac5bc591178d48a4297b1b5e36e508ada53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXA3V2427272.