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 0x8fb4cf949e30f8c6acd659f3ef58e587bf7fc9a8330b90448254ed13c8c6de47. 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/c4d0953d-37d7-40ce-ae76-875d292beb78.json and https://artists.proofprofile.net/proofs/artist/c4d0953d-37d7-40ce-ae76-875d292beb78.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 0x834bfdac1331725963f5c6edce9fabbbadc674f1e1ea3a4c93db0362430ec12e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:40Z), 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/DK4X11400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fbf2cef5768754d6479ba57c2fc7b2653899ab05791ce57e7c06d07825f4ea. 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/DK4X11400110.
Ode Til Tove (Der Bor Også En Ung Pige I Mig) [Epic version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4d3713797e0484fa92ce00eb15bf9620283949ee0822409f91cd721a944af5. 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/GBLPF6671939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaa68842f64b1668324db9503e525e0f04fb070fa5cfb20db367879a16c8f35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLPF6671941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8935bee7ea5107d139288669656d40f5e2fd759e049b0d14046e8060ec5a816. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLPF6671942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1337ff40ea34a9ab3608422de1f8a48d01f9e3439cdec2d3a934553b172cfdc8. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:22:31Z), 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/GBLPF6671943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f0dc2b34351262301f50f06e63df1ec6334503d203007d38019dad1dd3c87c. 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/DKQ502400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67bf5b14499432d6ff75b28494dab4835caf739e4d011ad7b6b004eff00dabf. 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/DKQ502400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f982a0e8443be014909f772bd72f1258ac08d26d62132b0748f59a18792aa. 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/DKQ502400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67835a4b1a96b57b54b2298af3d4c0762cf91b38f60aa06ce6c4f461f4a79e37. 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/DKQ502400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cde35c6b6dadc4c10c5dd0d3a47f29c87778eb4764c830f5b4f1372fc04b6c. 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/DKQ502400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe4d5235134679e094fac8257742acf07eaed48c7d1245c6631b9c81af65788. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/TWX351700019.
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 0x9a4358f7cc1973cc19914fc66f44e4465693df64c4ea0fb1cb74a45e80f8e40b. 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/DKQ502400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e6121fba87587f95cb13984a27ffc963820b235944f97b7ca1d79c69b62ea. 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/DKQ502400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb43545bdf9c63948fb223517bddd493b95750942f5905f13f91798a4edb66f1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DKQ502400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16526607a0770dda7b1664445ced42908c7c5ae7137a9ef23164cce56e164324. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DKQ502400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cae989bc8e59d45031765964709488344ec568e4854974f01123808856b023. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DKQ502400110.