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 0x37a44acecada678d4f62279c01f63ff1b58a351ccf1faa1a54fb90a6de094f12. 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/152546f7-ecb8-4462-a04d-fe5baa6852fe.json and https://artists.proofprofile.net/proofs/artist/152546f7-ecb8-4462-a04d-fe5baa6852fe.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 0xa9886f46a563bf68b8aada29a1431b036afc01d7caaff9804f6e477ced7d2299. 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/QZK6P2401811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37a7cbb9c19037fec4ad0141b427165b4d505c71ebd0ac54db4f09c6e00697f. 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/QZK6P2401799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea1b0e972b6c55c24ae1727c90627a2cca6de68d1ff1795129c874162acd9a. 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/QZHN92486932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce870ae9bfe78a18a658f15c4531925e3a9c42e34100cd6f16d8ca4be567e51. 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/QZHN32489425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e3fb075c04cac2d9f9193ce54c5803a27b1c35c7effd165375d2228a6840b7. 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/QZES82405636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737f12a37d79b8889c78783091290b0cf13b372b62430c268a2923ac73ba23c6. 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/QZFZ62471421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2745c10a854d5ce81046387287d7271c582f2eae167a170ae5ac4b03f9f6f0. 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/QZWFG2347882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac62ed80162d64b93838fd3dd566c6a7c852595e492012be81377e8043c18b46. 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/QZTB42384150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c9de13ab9d8dbfcab921d798b29e1ec7ddab1160498120cf8fb13beff23133. 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/QZNWT2388041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa5f4cf8c0c475dd1923ab7a237efd4fb7f903311ff4c5a5917df96c6407b3. 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/QZMEQ2321039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a1650443c5539691196175847b43bfa4f5cf1c2ad444f6fa661fde71b3bd9. 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/QZHNB2396420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd97aedf0af8c4aaa9d51577d9d9bdad52e2acdfe7e5ea6bf10e04c07b21e2. 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/QZDA52303162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ba60bd1f8bf2b8504d8da1d46d124b77452af1f16d75b77b3f5417f8dde06. 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/QZTB72257195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4970471de664ec9335b878f6abf8a1c148d8735f64c20bcdd8049a80680836. 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/QZTAW2222030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19946f8efb98467f106a725c095a7a9ae249bfc78703497277302a2bfc33a72f. 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/QZRP52298772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5294fd23b5c059e6c8d66e4823d47e5ce5220e9f3001dfed33d9e9412a5885c. 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/QZNWQ2225099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7508ab4b16b6693a70960a736f9a4e763a8cc223d58cbc658df1b385c4e3dee. 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/QZMEQ2248364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d6dd3bc9b91b6b2e6309ebbada250cc9b810758f12bb64219aa99912013abc. 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/QZK6N2289260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7960eac68c518f75a0f60053a1bf044786003a3d5d80c79bbb6e04d44dcbea9b. 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/QZHNC2247349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc8f047a25d988e7f35a9836d97644ab237eb3ca0084733fa44cc111a5f70af. 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/QZHN62295232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17936ed03d9a85167c73602db8e9fcaf22a25cd667dd8e1b1d5395a88771656. 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/QZHN42218003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79299129c32c89c63e4d818d50c625b226d8e61394fd7cb181c30bef81b4370. 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/QZDA62234015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a14aed511d469d959405ba74bd3fbf991de5423e0ed7bbc3830744d75a23fdf. 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/QZFZ72278573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a1d979dc30d2a0519f38bd523a9c0b55ed6b99d19c9fe88763900cc7d6b9cc. 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/QZPLR2104047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c42ebe131d0aa855aefb384fbd50d8d812540ece66c6b68270880c7e5ccc5c. 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/QZPLR2105627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a261494b03c79700bbdf195fb303b71567f35ba70ad189923511dc4c33810. 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/QZNWY2194203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95f5efad88a9b19263fcca66be00cfe0a953f631a09e9e8fd8cffc6603fd0ae. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GX3Q92199578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f251ccd4310181e628b0ee71eeee52d93c55d2c9fcae0276d21933f4f21a3b. 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/GX3Q92196235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5be4df8535ffbfcb87a6cb9edd3cc29c8d1ae3f747914ef763942f7342cfc0. 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/GX3Q92199481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20c3d25025b1de360425e57a472749787ead6072d9e70ca8a2d1e142868c638. 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/GX3Q92181470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f4d75ce7dbfd68fa8c91a734bc7cab831bbd247a6c9f5f8088c2f11c78c891. 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/GX3Q92164685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0c29d6a081d8cd214ee20b4e2d8e7e2811013186b1f9903fc804c80eefb91a. 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/GX3Q92047525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be92328cf71af75ddf3cc72e44bf9901db75ff6436710a1c48addbef3fa2ca6. 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/GX3Q92052959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd5fba8fcaae1014849229d3bb1ba04c09600863c24ca23a4e86d5985db0b0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GX3Q92047500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3914fd5cd5649c7bf1eb87cbe6a19f26171f49ead9369bbd544197a1565877d. 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/GX3Q92047476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fb568908c1f523983233c3967ffffc15b3eddc0f1f099ebe3d6ab2c6109334. 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/UKXN22134422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fdd3ac152ee10a08788d978b9dbbd6f732f4cb87719e092e44567b942c5da5. 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/NL4CP2100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf8cb123f953136059a5f86c5992ae66feedd3369d899b1b641e9fb7e6ccfcb. 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/NL4CP2100184.