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 0x0c298e111f0e3c6084171f088de84f5dacb75f63c4b43f37d817e3675e5aaef4. 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/9f5c9ee9-22c3-46e3-9fb6-27a9d4c3603f.json and https://artists.proofprofile.net/proofs/artist/9f5c9ee9-22c3-46e3-9fb6-27a9d4c3603f.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 0x8c93440e50ae322d7db947fd04b54213618ce2aed5465e97f8c5fdc732a9969a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBMA22307092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba10e1929830311d189d831d684c6494a4d4d2398fb525a393dd7ccfb0001468. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMA22307093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35590dbb3e7c89d2b631fb5d2e820893236fba601e8575e0728088092b7d05fc. 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/GX53U2373976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1a0150a75810245d802a9b44548370623e3cd7556f79ed95305620537ada0a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDW2465672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbf38abc96652e7c3534af04cd36d405ed3697bf90a76834edcb97e19f3e0a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGM2239075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6fb3392425ddf848d88cc4a51d9b71ab39ae94d5fda7dd4fab588c7f138149. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGM2239096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e07b5521ef411c829b1266b6a7cff5c220ead18c22421fdfaa189e1d9291f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZN882525445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26ec4617b5f47f14a98b41f27cfda1e24817b620728afd8394fdd86e50a482f. 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/GBLFP2362411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7c47e8290cb09e0130b7c54f80c611f9dd97614798f9610f18beebeb88baf7. 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/TCAII2495030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96c039961b39c92bc6bba4d6a86f61b09fc26d5ea2ea46b384aea3b3c1c301e. 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/GX3Q92425308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e44006b8c3ec39cddf3b290d5a665125412a5321645be8dad8a08f07e52f38. 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/GBLFP2392646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48edd49f1a4f7897a9f463ee4ba7b64fb0d5ede8f9ad84ea179b007aea8c78c7. 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/QZFZ62440753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0237456a652ac21ec93b4657947151bbca50d665f4d41fc0bed86a8713f4e5. 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/QZES72224236.
Nos Miran (feat. Eiby, Verzatyl & Italian Somali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb548e70c7c1eba970d5c4ad2fe733dd1fe4d355bb0a44d791121ac8fad504b92. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL12200493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a94cbff5d5b391049ce551313f98d3eaa34c1930b37aeea75d11654ad27dce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFO2177658.