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 0x51b90750fa67a9154885eaca77b9ab2395b0a999d4221d2916071230c2d8d7d3. 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/4b987a72-5c9c-4c9b-8433-b459e99ae32f.json and https://artists.proofprofile.net/proofs/artist/4b987a72-5c9c-4c9b-8433-b459e99ae32f.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 0x371e4a987f157c832734416dd90c3265e707c844918915484826b9420ed117e4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US4QA1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39a6bf2530752e22fe36327b90f762558330e79ee39c0812db49956a0bfdd5f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:48Z), 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/US4QA1100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0334c8db85a1e76451274cadd57d0207237db7b02eb5f9b6e8001444cc087ba. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US4QA1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2018545512506df57a435f25b70d18cf6c21d3400978fff7d87df7b78f03e4ab. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/US4QA1700011.
Music To Moving Pictures 2: La Bella Vita - Italian Cinema Suites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa254ff3571f27fab067d1bf2b1a7039db06effdadbe3db92a46562b9312bf381. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US4QA2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb100262de796aacc94547445278a1132a64a2805dfc2d32acd16d3e2081d3d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:41Z), 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/US4QA2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d0182ad16ce6b04a121803269907b45f4a5e0830f7c7567286872ce00a300. 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/US4QA1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7275618924c3c5c3f5fb2cedfb27fcfd5f7e94d910a847cb5022a0df97c9fbf. 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/US4QA1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d63b12e750238ef3894e090b40f9592d4035efb4eeb4ab3e2670022e309fcc. 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/US4QA1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77bfb644802e5d1b80c06aa785d900cfa248ea7bbef758e51d7fd369daf284b. 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/US4QA1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a2cb6a51217c38afc5a52ce66703202a997f104022319cd307d936393c656. 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/US4QA1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484514c05e9af69a0d338fc42b2e651589342784bc7000dc44778876879c0385. 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/US4QA1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf40b0353b2dbdd535f0d0895a84c856391bac04dda316658f16da643811f398. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/US4QA1200001.
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 0xdf69988db2ddf7765e48e4f624d1bc8d1917c6b7fac161421255852bd21bedc9. 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/US4QA1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22c8c5b6fc801a70d4ed514e6a554cc74d35bf42228dd9f6176a06cc608951. 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/US4QA1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fc7479c7e4df6b16ab1f9e79c853e121191d8de407bb99f723d032100447db. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/US4QA1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa782c1e731223dc9671e15ff8136c23a01f4845979a95e2579b31cc2249e4896. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US4QA1200014.