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 0x156a48a6a82a5d7092c1f6fd63c51e106d1d5cffc27ba684cfbe137c5bb33f71. 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/4d14bee9-3113-4437-9122-98f786caf537.json and https://artists.proofprofile.net/proofs/artist/4d14bee9-3113-4437-9122-98f786caf537.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 0x2d67a8c81a9f33c416ae00f71939805f07dcb0d6489bc7e9b8eab2f100ff55ae. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:10:11Z), 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/USASN1601825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b78d68557be8cdace0be4bd1f8fcb306fa7a0d143db3672a224912ec3763fd. 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/USASN1601826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9e6adf91fc6929d2ff8687292e427c582394794b0f113f0002a42ab29ce88f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USASN1601830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a67b7772f53a0a99f43312bef90091e2849c89c5ef77ad575fe4e9c8ad4f802. 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/USASN1601845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43753110a229cfd790e601ab9de3175498e4c2a9ab706950794b3cdd3fdf0a0. 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/USASN1601853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb3b584b21c3c168a689a896de67c8e2b8786ed2fd750e815ed69ca1ab77b8f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:48:46Z), 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/USASN1601861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb078448619a3f9ff5e65055165fc9422ca440f08b84eaee2a7f174d6d1c50820. 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/USASN1601867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5845a3873871e757a646813c0230c264a292b83898decdff2a7662ba4656530c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USASN1601870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e183e6fb534098e24b4f59bcc6fab29b3b2493eb4ad907233663fe68451210. 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/USASN1601872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f649edad84efca00b07aa3ce089d9aa2cd3cead04763b54af8adc4f92153563. 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/USASN1601873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1577bd81ed2933ee553468524642649dbe012bd9abe4c495ea249feb0c062929. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USASN1601909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81189b344d330d3cf8084eadc3dfc7fc4779dd1b5d8b12f207b209cead7721a1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USASN1601910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e4334723646c67d2c57e51728558ef49162ef20a6fa0f0a6919f51ca586902. 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/USJLL1006406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9804450fa317a1c1e6ffa5736d5cc0e79b1d5adcc0921c1c2efb87cb81a48ba1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:04:50Z), 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/USJLL1006409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd625ef99ac767b061db2ed2273117e37cb24ee6b647ffd06873cb027d817c83e. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USJLL1006413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1fb79acb5b15dc080e0bcba4705b34aee1e20e3a8851e5183c1e59adff61a8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USJLL1006418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf695b1ffb574c54893f2b887f560033eb57fd5eb879f1ec08446363cb5d0b85a. 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/USASN1601959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31a2787dd0f080803f35dd146e7bbdafadc554b8c971b028e1c02526502ed42. 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/USASN1601990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e426b05857ee3f1f8c8d50700c202125c9e6c37e9a6e9fc3719e4767bd1ab8. 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/USASN1601998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6dacc3a9c4aef4f5a5fec1830159dcb509c7892757c1244541c54782a8a8ad. 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/USASN1601999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8a6f6f7cf17c5ed6e580412ae4f785aa15bef663ad5075bc864bdb82f99a99. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:50Z), 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/USASN1602011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e82e97224fdc8d9d4e3e32d644369aadabf6fb846e76215379c78039259fdb. 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/USASN1602020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ffcf1f01dfbdbc4eed8c3c87b715716c5ec4034cf37d390494ff52788c0ad3. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USASN1602074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8578a392a627ff1860c0d3373ffbf93f6bbdddaafbc600ace34a92945a60eb24. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USLZJ2204174.
Until They Stop Me (feat. Lil Cuete & Espanto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6843742b363a46025a5568a5c820324141e73bf08983f6403027f7bb2604a9d3. 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/USJKM0704211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd090c79ee92c712c9bc5c7c57a90d2e838f22923dc22918678a13c89e562c. 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/USJKM0704224.