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 0x0d3f39b2dc52eb3fcc23d9ab19c270e4c434659d23b730a772a0e7b3dfd672c6. 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/434e4141-2e3c-4543-a203-28558e78034f.json and https://artists.proofprofile.net/proofs/artist/434e4141-2e3c-4543-a203-28558e78034f.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 0xd3172584097dab2c782905430b428adf79c5ee02367b0ee1564fed471c1a6eb4. 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/QZMEP2358431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d567ea2430c7064a86a3d12994c89caa3c172d933ed194e822c498a71fb81f. 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/QZMEP2358432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e8486bcb7339f4b2dc9e228389d4578733872fb74434a7fde2544876a4cf2. 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/QZMEP2358357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364f2e815188c227baa572d36a06c4ab944312d68571e27f1d3555415ad07cd0. 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/QZDA52387092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ceed3636deaa8c0df1c74d8890c4739880f0b924adabc0f65b257fb541a820. 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/QZMEP2358433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b9b8d833ab8916b5935cdaeb440b93a84cf458445cfe19f4715df21744dbfb. 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/QZMEP2358435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dc6d03d1616ec700f613aa76ce0c251093a742d3f3d4b256a9f4cb3402683e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEP2358437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b6d67e127cfcb82d521c49c337576c296f3eedb71436b7c5ab6b2ad265a711. 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/QZMEP2358439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56bf160dd0d74ee8fd484ac29c79593841a046741eaac0d12c82ed905409aa. 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/QZDA52296250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed53db44536b7cb105e698738ca5087767f573daa4a61a4ae1fe97ab3faa7ac4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEP2358441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47548cd2e30a9c533cff7c29f00d1e48bf1d07f8e4ad5a722d7a47910b8a1142. 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/QZNWQ2453231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f28de00b6e670580c108c311dfca8fd3f9827c58deed70a0ed5ccb1eced7129. 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/QZDA42406107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e8486bcb7339f4b2dc9e228389d4578733872fb74434a7fde2544876a4cf2. 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/QZMEP2358357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9cce78b4e99176b0168bf8a4ae003a9a06543b5af1c190cf8c558d847b921d. 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/USUYG1489034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae78e028f29219d46b840e628509a1bad0803304913ca71ddc020e86fb74bc0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNB2337062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364f2e815188c227baa572d36a06c4ab944312d68571e27f1d3555415ad07cd0. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZDA52387092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4214b2d77dfb98c9d4a50a05306b94d4d4bf7bf4a612ea491450756b18bae11c. 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/QZNWS2288467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714a974c54dd57fde33a0e4e587436de74131e9ae8d3e65ff37b6dac1d17c27d. 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/QZK6L2263589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3132a496e2dec125f5bf8e6f784f8e2ce4efaf9d4ef522b19e8d6e0b8c9e384. 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/QZK6M2251873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a5dc1e74ba21475fec39b2e2fb59b93654901b6dab0107de8f6d6ea8294186. 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/QZES52291278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5373d35d418829f6298950bcc194ae5e6924406438ae0bf49601d22fdf873c1. 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/QZNWU2164738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225fcda8465db04466ceb3b1c94717ced306c76641afbc73e086d95197cf2970. 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/QZMEM2149457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe55cc11eefbc0deee2979c22fa351a92b5334cf3ef2be85d16168251274eb2c. 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/QZHNA2116778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129a627e80f1292b87cc48fa4010332c722480f7530a7ba9d3d3fc9b1d99f17b. 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/QZHN32175546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff81970b8aed75d03615833dfe1bdf9702d5ad399d05e87cab3da936354a4e05. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZFZ32110225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f97eba84c97645ab66eb23ff6066f999a74a6f243ca9bcda568ff479c55af4. 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/QZNWY2266949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbcd8170fe9d88e739673296ef889164cc45e5e8559f7a0aa817da74e4d2f54. 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/QZFYY2295663.