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 0x16649e972df93eb43babe7e0b1241a32f34357510ef65c41a5bdeb59490eb223. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca865503-d3b7-496f-8529-2101b04aa86c.json and https://artists.proofprofile.net/proofs/artist/ca865503-d3b7-496f-8529-2101b04aa86c.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 0xe0d665d82d2df11809f1f078d1e709ccef450650d317feaf5e4ae433c037f4ab. 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/QMNHR1920001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb9b5c227ef5f296cfa8952aa2f24fb9bed3de86fbb305f0d1c6967ffb8c92e. 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/QMNHR1920002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5b449928238be6fbf82cd4977f9e85008f51418aa181e1592f1890f19e37cb. 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/QMNHR1920003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6120774711de52e20bdbadd8e4cc4907f78210c755eca0f14573c40ee04e77. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:06:15Z), 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/QMNHR1920004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dca1efd374dc7ddb6baf3483c2f0a15120f6b74489b2bcde38e3445a339648. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMNHR1920005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6155a6bdb613e249e0888d65d29819b691ca94880834df591ec20f6b616633ff. 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/QMNHR1920006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb4c75c7adea51a0d3963f673c13440f174f77476f9a34e960cafdb89f86de9. 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/QMNHR1920007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee762e1c2aa85cf051841b7b14f57ecfe064fc9eb6c1ce94389f4652189ad2ce. 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/QMNHR1920010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76723fa6eb019e01250c8e2edc32c76a761c7c12759e6cea94cfeec7125246. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMNHR1920008.
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 0x42cde2406bcbe3970b91b13ba34c430d14c0e0893fcb179c2a49bf747ad5f1c9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QMNHR1920009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df7cb9f8148fd555e04adc36921900b2e0fe3225077793db3c60cc9f4eac8d6. 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/QMNHR1220001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6520c3d0651b024da1bb7211bffc09816e57c04ba93736154932d44e7618563d. 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/QMNHR1220002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e844df4131ea12e8b411df175f37c8f3f9c4f6e8b52cd90d0077889f5185932. 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/QMNHR1220003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0425e5ff87fb7a6f99f99ae584f47f20c69b6337d7ae7ec9740c993630dc5c3. 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/QMNHR1220004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de267534684059945c799ee206337b105f1b38541bfda2f0f55c5f8e21325b. 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/QMNHR1220005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313dff450ae964f6cb850fcafa0043f95e98ba799fa4e25178284ea8971c633f. 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/QMNHR1220006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa45a879e962125a5e0b700343cb9a80d06a5885a5f0be9da46ecd48bd049fa7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:04:23Z), 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/QMNHR1220007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4618fbafd1adc1787425cce6b67e70fee47bd3d498a8aa6a8f84b60156dc1c. 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/QMNHR1220009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f50a93fa84ca77c1e7c6c8570df03c553712a5ae254aacc3fb73c825a202f8d. 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/QMNHR1220010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2386a7549695feddff1c1b28cade44cda3cfa76774f588687b36a49c92257b6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMNHR1220008.
Mary, Did You Know (feat. Natalie Cadét) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fce34aa2547568a64ec799c3c51947e23c613d716382254c07d557666de7f41. 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/US4R31109181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07205786f01662d19f76576efa72e179fac0648aa8488d6d047f604bd51bd81b. 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/US4R31109185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d7e090100c5416605e57f6da1c56373c3212714c5b276aef463bc45b8a8d8c. 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/US4R31109187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72220d941d7bebf630ae85fd7ed8e53683af4070da60806acf7b7c57d2c7a875. 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/US4R31109188.