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 0xcdbe6d58615204fae87012f3506e079ea955914a85a122564f69f39b1200885a. 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/dd5cde69-ef68-4d92-9edd-af572415e8b3.json and https://artists.proofprofile.net/proofs/artist/dd5cde69-ef68-4d92-9edd-af572415e8b3.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 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 0x3da8c9bc5d43bd526f30cc6dd09fa6f37de75e7bf275214392b91fe7d943d17d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWT2228025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8251e9e241f4416fb28e41927cb775211754a4473a87929548dc4295e48bdbc7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2358558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea3048727af913069baffb22162dbf0b2d0360454fc2fe15da6e58beb244d27. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES62352105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a11797be713a5e00e5a09fdbb8a16dae8d8dc15dbea0c8bba80bad4023f8f4. 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/QZNWS2317703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6376aff4b5cf7a9a24231c7cdf4ffb265a28ada6bb32bceb31552b203a67c62e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZNWS2317705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a58643305684b2de569448563dd0f460c00a290f0a55e868d3f301cf4a212a9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWY2311311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056bf59940b49a0fa07e75ec1ae2d0775c2a92251eb71080b96c7fe34ac23300. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/QZNWY2311312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef0dd7764e5f857e11ec75e1227f3bdcc64df53c8d07d25104cde03945e827c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWY2311313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b52f73d7aa86a5ed3c8ae72e67300bd29a2a6c0dc96427d2e745f183c3411e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWY2371582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40b0fa8274e11e41749db38a6eba9031e510fbc597d2bae78de43a4aa8bb42. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZNWY2371583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1821b7669a08bb23852f126027fd32c454282a8b9620452a3d82dede0e198bef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAU2388383.
How Deep Is Your Love - Going Deeper Flip
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f63836b185be92ac50563e534b9787980bc7ff3a91cdd1a8ea5eb43fffbdd1d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP52377881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff154af01d59ea2fed72824a9c2b1b6635d2d2e99a30f8a35d62bcdeba0e450f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTB32326022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa33ee0e65c3f8604bdb7a56abce683c14ba4f50ef2adcf54a98cceb40c93f4. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTB72375545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5709d7a48f0593b1c63c1ab394f333cebe85589747faf01041aab11d31a86e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL1DT2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0f8ee71172fca75dcfb0d2f915f5486b0e25244ec64daf305bb90b9d1265f1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES82424673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bc6d573d1d9ee53577ce559cfd9f5fc72e86e28592b94e34cd2883fc7a611c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6G2422042.
Rockin' Around The Christmas Tree (Hard Dance)
Somebody That I Used To Know (Hardstyle)