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 0x09e3ba2a3ae9b317dcc31c0b9b4ed3806f43003115f803e1da25a688fbee9234. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dca4bc46-7515-4fb3-b965-9ef332f68a28.json and https://artists.proofprofile.net/proofs/artist/dca4bc46-7515-4fb3-b965-9ef332f68a28.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 0x485c3700d9bb0ce02f9b2cfa9eebafacd22986d77eb1216fc9d7d00075b95996. 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/QZK6K2339157.
Bang Mines (feat. DoggFatherPoloh, $paz & Imafool)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6af56d1c4a99e2063bc90a654c9485691652f0cefca78e85431b2fb2a28c940. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2339159.
Grimey Cypher (feat. Mr.Babyface, BANKBRO323, Imafool & Lil Bouncer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9ac50ee548023f675c354a4a5c13c7e786e68511006d1a780d0f5b8387e23. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:40:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2339160.
Grimey Park Freestyle (feat. Plug$ & DoggFatherPoloh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589d82001263ec13ab32024627dae0b579fd663cfc09588df7ba9bb34e3f9203. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZK6K2339162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678d34a741a9040a267e206bea1302ad54ac39c1dd3567cbdc3f63145142d52. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZK6K2339164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076ef3da86cb4d4dbbdcc2998b2186396745a9e0d8360829f41b3a6de18324d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEV2332619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9fa6566cf1c786b82429ccf2af6be2c6467dbabd4b0c77416d6ef08f6682c8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:26:20Z), 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/QZNMX2247602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7ea37e168ae7966aaa3aa8e791c5402e98320a04a898a92feecb21587ce15d. 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/QZNMW2287358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a39bd528f0f0e7660c96bf04504ad64f0e7592500040d0ff58a7d152aeae86. 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/QZNMU2240173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf4fcbe5ec1550f54e805cd4e155f095cc11d772d04d9c165d3c900634727bd. 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/QZMEN2351502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b25cf0af65b272b81e120b07cace162f4db5fda8b21104e30de980fef474fa. 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/QZMEN2351506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55629d12bb0dda12709c545b4a4412d235d025fc2c45db9bf5b07222d050a01. 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/QZFZ72360518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898bfb9fde11c5ad1be80f88a4d9b993271a0f4618d03abb88240a1d3debe957. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ62329420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba335cab6c8c4ddc767620eb95b878dc378c2703205fd5d3a6c2348184fb700. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QZFZ62329419.
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