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 0x1a4aaa754c63507b8b54471434947d1b13f8759a027df929aac8b4fcd0227268. 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/fd442e0f-4111-4b3f-a2fb-9d6bc36fb566.json and https://artists.proofprofile.net/proofs/artist/fd442e0f-4111-4b3f-a2fb-9d6bc36fb566.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kanizsa Csillagai: The Boyash Gypsies of Hungary
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 0x924d3dcfd6bf845681ea3021f8c23a6e18d0dfd879abc5878a6a2754492a30c2. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBCKG1000038.
S-o mersz giszka (The goose has gone onto the ice) (Boyash)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729dbe947f314a9f12f324c3b370d8eb92c0812ce852a76a61d3b0a78e4480d5. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBCKG1000040.
Jara jesty tu, jar a me (You are mine again)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a930fc1c1db8063b9dcaf44ca4598d5329b49b70081a4f67c7b056c37ed8458. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBCKG1000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ad84cdc73f8b8ee483a16624f593daa6e363e4b01aa7e0242bc134e2105012. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBCKG1000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc17559722103151acd97a3fd1c0bdd91c387cd621d2b8ea4c9bba9a40dfdb3c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GBCKG1000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53701acf49ea78c87596c2e9ec434777765a3d0361e694fafc319966afe2f89. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBCKG1000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aff87f960bfe389e119507d81b9d7f8f581737c78ff21e9d804b4274518824. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBCKG1000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71445bcabb18826a52eec6638a8e0485633886538c76641bf4bcc7a538dcdedc. 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/GBCKG1000049.
Asztaz bja ku szanatatye (I drink with pleasure today)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e8999c26d1a63c6e069ae7a40e26b18db09544727aefe2bcaff4dc1f9fae6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBCKG1000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb340cbce40f27780f9ab88006f7d51569b39078470279b3f924910d0a40c34. 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/GBCKG1000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87cddda6c8c6eb80bd8ebb66b6d987af767413e451b8bb12bb0c59289a232b3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBCKG1000054.
Szi amen jek sejorri (We have a little girl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148140987dd18453d81708f93b85d35732a1344fb6f3e42a383a75be5c8d1087. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBCKG1000055.