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 0x597b8f0588bdb230d6023573addc924e295fa0e5afbaa7fadc121c12f55567bc. 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/d61c53f3-15c5-498f-8079-608999da90aa.json and https://artists.proofprofile.net/proofs/artist/d61c53f3-15c5-498f-8079-608999da90aa.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 0x38487806c369dd780b585002bba5460931340be9b6e9a5cddb5a4d44d2b7e825. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZBRF1872284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a073833996b569430b901f29ffc09c6e187b23c6f3f112742d5b67bdd3f0a4d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZBRF1872294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b13d590d2ec749e5e026b4b728fba8f87273466e922104027744f84c315e2a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ31993422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1b59551699b23febeb7ef387995d0763950f8c59b023cf0b8199f01f0a1b35. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USUYG1276153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd089813286860da218098ec91329d18c87e729aa16410ddbbbafeec0b9d8332b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:39Z), 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/USUYG1276156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49ce09ddbd65a06b2dae584d0d5ea7b66af0c11ac452ecdaf323426e22874bf. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USUYG1276157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74bc920de15c152415da2fdfde082c2ed72a2ad0b6023832a6329e7fed68267. 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/USUYG1276159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7eb8a97828b1248091b0b5afe87f55e8b1d4618855801443b0b0f908abe083. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USUYG1290562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb78c47a57ab8f621e5d1da0b4c2ab2b1c45f4bd5497f565532364c8f231d5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USUYG1290565.
Heat Check (feat. Rio DA Yung Og & RMC Mike)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68373bb2852c862d97cc889528b31297f1042a7c9ccb7772aaa05090cf34e2cb. 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/USUYG1339359.
Back on Dexter: A Gangsta Grillz Mixtape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714f9c523221d2d483388a515e4a069068bf98c98310289a711d2434853e4a75. 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/US5ED2202549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714f9c523221d2d483388a515e4a069068bf98c98310289a711d2434853e4a75. 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/US5ED2202549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d56110f10b0c4ccd64fd378e5fbb3574f18b4d8c77a69a362a12d30c247359. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:24:13Z), 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/QZNWT2077208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9defeee534dd81104fd8c1652dd4ba6f9170e633c875a22abf1e45fd73aa606. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US5ED2303551.
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 0xf4a2ae25789e9a27050077ff3b0bb0c5eae566dd529d369012d7e11afc4b4553. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US5ED2303552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a705791989368404f38cb29d5c16338fd83eab515fa8493d79ab9d3fe826456. 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/US5ED2303550.