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 0xeca5bb95c6ba36c9987257e57fe72bc000d38bae0a540e30a719f0fb480ec18a. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb562b09-2859-4e0b-98fe-dff8e298daef.json and https://artists.proofprofile.net/proofs/artist/fb562b09-2859-4e0b-98fe-dff8e298daef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chess På Norsk (Original Norwegian Musical Soundtrack)
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 0x04bf1afc6e7c92d51fdd39037793f2c765821f98769d7ef64e94be3bc273445c. 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/TCAGH2238734.
Historien Om Sjakk/Kommet Dit Jeg Vil (Historien Om Schack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d63e5402a32f653c252ec280125c5769a1fa68f47b180639cfb0bfe99c598e. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/TCAGH2238759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd35977a3f3dc1e56776af77a99d7ea758f3ba50917c32e45f85e3f054efd8. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TCAGH2238841.
Molokov Og Anatolij (Anatolij Och Molokov)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68967b13f6591ff6f522300d66717877affa48590f5145bf927c67cc4a468a3a. 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/TCAGH2238869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba15e5b1a6099deff49341f7a777576daa181f46a8933f304f61ac935710333. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/TCAGH2238887.
One Night in Bangkok (One Night in Bangkok)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7535d8620ccb628e3f1eff4ed204a0d3c2bae9bd96a903a899cc462f8f6629a1. 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/TCAGH2238924.
Alle Spiller Alltid Et Spill (Lämna Inga Dörrar På Glänt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd1e2d6797bfe35a806b84a370f40dd8a56a22ae80ac0599da28b45193e9ff9. 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/TCAGH2238965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef90c597805536ea37297865cae36b2c31f01e57d63d5cdbcd26f573e94e7941. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAGH2238977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e8baa37b74a1b1b1699d92e43b7151d55f7a02a90e12b0b472a5fdd48894c5. 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/TCAGH2239043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149f2ec1b499cb27195e293246066b25293491a3c6df48000fa5385815b4f801. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCAGH2239057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f81370415548df531f367906b144cb4c8cfd988741855cc783f560bfcf446. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TCAGH2239062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a000b51bad93e1d36c7c55f13c89d0228ecd23e1a73e89f9a36443661c1890. 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/TCAGH2239091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ae250cc34abd450f10c54cdfbbe94ada6e15e1e5a50b40a4fea74289494467. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAGH2239107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aceffff779390ef28eefe0c9c4bf083c051c2d54a3179e09492c3cd06a3535e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAGH2239132.
I Mitt Hjertes Land (I Mitt Hjärtas Land)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ac606e9b471ac1cb523c361d77473cea2b2ad29c0f4ea315deb7488f9e4d9a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAGH2239135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5def45556b651624e4754553b4842a8957aa3c7d56068756f6dace68e759662e. 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/TCAGH2239142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610be865a8088175e376361f5181fce6099cca3e36615e2e1433482223734a62. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TCAGH2239144.
Dere Tror at Jeg Er Blind (Ni Dömer Mig)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb78ebe7fc416a075ccc9561d42bb3079b1db97238a741a20c2e09abf2b1173. 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/TCAGH2239170.
Hvem Er Jeg? (Han Är En Man, Han Är Ett Barn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23cb1d0ef79f1186f1e9bdc247517d9e11c90fc349cec03914a9a2f62d7ef41. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCAGH2239179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c33d0193289dbf4211ac98af2bdb97e089fc0f96af7b96296cef5f0fa8fbbf. 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/TCAGH2239184.