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 0x078a094b62f9f9e2165c6a4b8aa687de808bbc1a6f4574fc343e942a4e07ace6. 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/0371e104-8e4c-4b7d-8194-517c89c673fc.json and https://artists.proofprofile.net/proofs/artist/0371e104-8e4c-4b7d-8194-517c89c673fc.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 0xd968de2303d39b759b33c9ac7c23afb8e784b3aa60430d072d59de6469a576ed. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDA62246480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e61d710a2bcca368a81b882221b86e101d7bbe4cb9efbd57362cc19a4d5c978. 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/QZDA62246482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27495801c5c0dd5a2c81061109706f9f1974d649aa9df8e99907a4000257284d. 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/QZFZ72277074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669fdd4a52e1eb6512348c611e68067625c58ffd4f2804c608efcdf9d652d96a. 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/QZDA62246483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36198c8e6a114272b0ba320bf3ab145e655d34e5c2aac04f968adac1607db076. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA62246487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb54ecc1b7a493cee90ff273fcec50a8a34c5ba5b292c100f1661765f7a7326. 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/QZTB72348116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcbcfb63c22fc3e822e4a6a1c8cdb6a1ca10481c4cd5fe9e94927ffc49d3ca6. 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/QZRP52340708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861bbfc8261cfeb1a8bc391144e789bfde4741941484c68b9f40a7892913c517. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNWS2364033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67882fbe1b6d5327f08baf23cdf3f0ab4057e04ceaf3373f9bbf7f59fe5bb79. 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/QZK6K2343788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb42bf010bf87d1a712704820cbcc03e4d942c3b8248ef04bae9996b4bb8fde. 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/QZHN52341326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b11e14e232d93d9c5eda01494fe6c3dabbd430482c18b1108f81bb5eb23ac7d. 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/QZES72305333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f916d4b06693df50a59f2db3f0e6b6a7af095b2529eb22e13dd8ab96d3a545. 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/QZTB92269188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27495801c5c0dd5a2c81061109706f9f1974d649aa9df8e99907a4000257284d. 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/QZFZ72277074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b51fc3dd62680f785ff439b1bc1fc58ae75616f813cdfd92336246cb170fdb. 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/QZNWY2118618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3307078696e586d6ec2fddcd7a7478668317c7f7f4338082b2517085b422ccc4. 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/QZNWZ2194109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0039ba252c1916d6b98a9d56120e1ffdb09430db5280fd46aa0c9cd82d164855. 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/QZMER2150844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c1a4f1853518131b83a4c0b47cce6e81fe75c1a2f63c86d37dff80d8fa99bb. 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/QZMER2149807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673a2c50dad5a9a74615cc35a35b8029b426752d848fef02b0dbd161e21a688d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHNB2129148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd6eb6aafe523d22487847f5401e1e21de026cae82f7286bdee8f1bfcbeef2. 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/QZDA72179073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7f46e056a726a65df0f6b61ba452bf632415a1ea1fe661a14af46e3b7a3afa. 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/QZFZ22120767.