1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4561e3693232165bed1f2a301fff07294746e12c77bbf189593ef85a5d5747fa. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80bac265-6e9a-4396-a152-ee56810c0e04.json and https://artists.proofprofile.net/proofs/artist/80bac265-6e9a-4396-a152-ee56810c0e04.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 → block OTSBitcoinBlock must exist at that height 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 0xa038d47b00880ed6bd485dd8920db0184f6eea9d911707a86b3a3883d7a8b6eb. 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/CHF032415814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ece3fff71e2a29605f7b2025ecf0be98d6edee83fa767e9c7f1b2501a5b2fe. 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/CHF032413526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3773adfd4a308675196a62e5da2f5bed27b2135ad096919f14615f7743d0e5. 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/CHF032415817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1c0eb443e9b03b800196b36869985e8733ac1c4964366aefd40c5f04f259d. 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/CHF032415819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485bebf432c8b3c29f0421af319cf87e386a89707eb073e309f25e2ee5ab9ae6. 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/CHF032415820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f669be11fdf752bdde5167f5e9317081276ac3579214f6cd0811c5d1a1b165. 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/CHF032415821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc113d6520b247cfbc1102869cbfa6d4d518b566d8ea73c45b545e3ff9ca2ecb3. 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/CHF032415823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9f29af8cb10875a73e301a04a1ed8fe39dc5c73800e2d1d45ef876dd6db91. 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/QZK6J2225902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ece3fff71e2a29605f7b2025ecf0be98d6edee83fa767e9c7f1b2501a5b2fe. 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/CHF032413526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca06462f6a9738e59ea601c8b92de0b133f3d796477cc0308833feb2808750c2. 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/CH7812353084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29633df3d0796ba0d2e9d321e079ce036910d3568901afff27beabe89bb7dfaf. 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/CHF032402386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe405a47e30ecf5a8b5e19c18e7e7af31157479caf7251853b3a0a7dbdb115a74. 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/CH7812064403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8274f8ad6c2bb989f48e5994d1312839465582fccc47f9c64e34c5073824fd6a. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/QZHN51946142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1170c54ddf17634374434114896b79f746d47c695d2f9a93d337395d1386d2. 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/CHF032414344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f48daffebb2f5f0a0142098763f40d052dd4ec2a6a675f7d6d26f3bdb4ec2. 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/CHF032414345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e8b6b40b39f39d69d38551f3db5c5109c741bf6dba41f9544a25710217ad00. 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/CHF032414346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0ff393d73ba5bf1eaf2688c74c6b62ba60bfe053094f265a6149ab00b56e10. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CHF032414347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7cdf4b68c4afd7f9efadc3a862b0443569090008de23f84fbcfc2f9c23f1e4. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/CH6542022025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d655add5ac38558d77cfaed635ab53d279a559a95ca5d4f7cd201a22730dd6f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7812102703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebafd7edc89643089c14ee2702abe7cad1f50528b191071d7140024c109a6e77. 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/DEZC62290917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3df6457ba33c533bf732a75b215a4a49a51e37fb0667b481e3e5daeae6393. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6G2374062.