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 0xb684139d7f33fcb9d3d3ab5ee9f0780d2031dd44e8d9d83b3c3852c143b5f3c7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6624f970-fd1d-489b-b7e6-27d76a11ed5f.json and https://artists.proofprofile.net/proofs/artist/6624f970-fd1d-489b-b7e6-27d76a11ed5f.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 0x57bdd463352684471bc58b0a3d8613557ca91701dc15496c763fd3c32a876b85. 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/USUYG1351326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5c315fca863a9147c3fb4029c0f1ee8a3b2aa997c68ce1225100d3c3a0def0. 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/USUYG1351327.
Train to Go (feat. BOE Sosa, Bussdown Gooney & BOE Mumu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d71496aaab4afcabcdd7e270c845caf8e890d1ada351d7f7e37583e9aa2b8b. 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/USUYG1351328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6813a4abfb12e5f90c2ae839122d23dc80c6861a562720c06cf059a04cecc1b. 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/USUYG1347122.
Nothing but Bloods (feat. SD, Munchie B, IceWata Rock & Keda Ru)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f00df9f75d9b9eaa034d4832a2379ada9483ef70d7d8122b88be47ccb85894d. 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/USUYG1351329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cdfdbb9e62956ffe5ef98b1467a99f85f6e09d009190ed2406fad59d5ddc21. 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/USUYG1348740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c41700ebc2e3fca02736166f00bd0a41a4f3012f37b0b635550e92c7aec496. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USUYG1351330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66026e3b0c251321cd7e0bfaa444f19e2fe537b070bd381e8a07c130b443d8ee. 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/USUYG1351331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03570ca93cd99d7ea2c892235d33d81d3aa06b6aee58c6e6cf4f7661f205d23e. 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/USUYG1351333.
Police the Enemy (feat. The Desert Baby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74340416830eee7aeac1c02d19d07585bada8b7fa5d65043fe3bf8de2fa3df4f. 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/USUYG1351334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a802ce82bc29592625925ec291367b870174d846bfbcc774c160ab1884d9920. 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/USUYG1351335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba57ca76061c70774e69c7ef9c52562a7af2b195c055e907bbb91a8fbd6f990. 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/USUYG1351336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6335621b8625943278ad6970a340c49f49c1f9019d72bef1733b1070b23a989. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USL4R2249568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbdf83f65219f693a06e0dcf2f3ba4717e72d55c20d5494679eaba900a2b96a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QM4TX1868242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20930401e0957a646ca92794ca5467e7ac2f7c08698e65d06f6b07890cba78b7. 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/QM4TX1868249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce1b60a5a66adc0728cb97259eec284402aa86f2fab123fe4b25d8ed2a1cd57. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QM4TX1868253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254b858683ad9e667db6cf6137f54b6c79409593926d81434616f09307d6cccc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TX1868255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb679efc9b519617f33b41431ec3023afa769a490fa6f6ebf80efd84bfa1705f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZYMN2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa104a55d4f8866378b6c98616261f6883921478017d21d7ffd5767422d3db2. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZYMN2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa0e4bcd57dffecb3f6c7b56636e2305d122e11b17916cc409b287685f5d0bb. 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/QZYMN2300009.