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 0x271453c176b5fa5a9f0d4d49b1efeabfb127bf446f766a80314b8ae31b214648. 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/543c67f9-cb30-41d3-ac23-67e773beffdb.json and https://artists.proofprofile.net/proofs/artist/543c67f9-cb30-41d3-ac23-67e773beffdb.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 0x982464a02f6518a945caa6e9af80cc270bed3195af0b15333e9551806898611e. 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/DKGL51500907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708013321e535768eff869c12b579c45d4f24beca4663010950c166776ed5267. 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/DKGL51700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeb29735e7323e4dcb1d1a300b1f4dcaad427f16d01c77d4e3332e01f887837. 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/DKGL51900201.
Strangers In The Night (Few Wolves Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2be15869a077a08a9e4d87822f06fe728312589d53ee7e547934eb88515e30. 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/DKAZA2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b50701a420375571cd1c90f47b55b9a317e27155e1bad6bbc14b80788763c6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKAZA2500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a5b800197842110ad2e135dff7cfa2faab34d0a78206b10018b191128f187c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DKAZA2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed996a57cca08199882787093fe180d82cbc2605ea6c8534d146a8ef66ba43e. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DKAZA2400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ee516de0dd0bf7827159336ccad60ebe3b276b82c835b990e014321d336da7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/DKAZA2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112a4cd196b9c2f9047291d2c7678c97cab0ad5759afcae3a1750aa9905853eb. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DKAZA2500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5de8004e5188a4c42f1e0382f589ea57d1595c75c3adf7c4b0c8e0d9f9f6e3c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DKAZA2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cd159719c18955491c8806c21adae9d70f2dba780b102ce8b9f184ac3060c9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DKAZA2500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48900f74d078859256d1c5d626884fe3104b15ebfe50c7c02c85f98d8024c578. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKAZA2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67513f19971fe1caaf5f3f4ca42da586bb807549f4dd7b44391b3e18e44d4c08. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CA6D21900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e5beed19549cecea51b77108c5f864e638b1849df86f765dc3024cf567bc5e. 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/DKGL52000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e5beed19549cecea51b77108c5f864e638b1849df86f765dc3024cf567bc5e. 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/DKGL52000401.