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 0xdcf13f452aebd0d7cf4bd9d94a47b49153930e7110b34c659bb02afb4d124423. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8eb73d9-e870-46ff-8dc8-5de40eb20c9d.json and https://artists.proofprofile.net/proofs/artist/c8eb73d9-e870-46ff-8dc8-5de40eb20c9d.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 0x27af23c9ed8f53b3498e221276427ec1ed7b5d20b758daa56831faf956018b28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLWK1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f648e946973cbec98b680c124f35f5b51de2c6875618b8053b61a9b741fd229. 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/GBLWK1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ab4141b805df2ffdafb04f446cf6392f652cc6336b06ba9e96a2c32c1f3f31. 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/GBLWK1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80952c4ed78fb20ba6d96cada9d587b13e58f089a4e5cb3226ec151125f33a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLWK1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605bde9502bd80abbaefa14757c9f84f7bac884d02cca689c1e634d97903f04e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLWK1600004.
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 0x8628b9743c4c5bcf3d40fc9b171b472a726a7e2af08aa42fbea72fb0789c0c07. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBLWK1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60807d3a7c457d12419f09e4ff5c3676663d64eb4c72b195ae6b442e19de3391. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLWK1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec50d780d3f1851d6140ea2addf1acabdcbdf7b4724f094f28db190bbe83556. 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/GBLWK1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a2c83a6d1e359bed6da26ce0d336b0613b6909a442903e069c1beeb8902575. 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/GBLWK1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0ef8aa90e1d79d68ecf22840ff5b2c213d1d117d3a5399e317f1c85d5a17a5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLWK1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4e99742e6695486af998f6763baaea1f4bd496092d254b4cb1ea7e2e852f4b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBLWK1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e8e940cac7151c9b0fc7b3f522d0b1b9933c674c5cf2253a531e3f1b5e7694. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLWK1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fc7d994fa4fced24e4122ab862eee9a5620a4652ea51477846ab5ea5d34139. 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/GBLWK0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7043666c07de64aa0de0eff48f569499da8f7569a1f11444b1807a9d8080e1b4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBLWK0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aa3e0f5259da10be0ca979b23db2ef27bb27ceee0223b9f3db6c32dc5cf54a. 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/GBLWK0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eed5197d395096afc8871ed84a4d1d679390c1bfd8f421bc5a3132553a6d18c. 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/GBLWK0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6776d500a6c50ab59b1bdf071504ba2e754928db7aaf03cd31bf75bd27300f2b. 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/GBLWK0700018.
Wilson's / Shkodra / A Minor Fettle / The Canny Man
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc206bdf580327b6292d55bdd710901364b8315c334b606cdb4b793fdc498e7. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBLWK0700017.