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 0x7cc77aed8ea6d3db90d9d07b2f433d5983978076db2dd7d8488dc2d820d40ae9. 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/2ec8c966-a09a-4680-9cbd-29d7ef4e66ef.json and https://artists.proofprofile.net/proofs/artist/2ec8c966-a09a-4680-9cbd-29d7ef4e66ef.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 0x492b97ba74efd43df0a187ce17c1795fc268865ea2673eeab6ab0a7e1ac13348. 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/BRHGT2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8655a92a54cc18c951c8ba447d06f1821d95fc035ccad19b16df84b9a8424198. 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/ESA122494711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3736849ee69b68a81d2851da93d2e94fe25e6ac382cbdbb7bf07cb337efe6913. 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/ESA122404406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317539fe031996c83f605fcb9c8659788bfcbfa123df3becb80400ad352c0d1e. 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/ESA122404407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16531997bf293f32599d7125581e7c66365006482a0ec7888821e14ab55cfb19. 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/ESA122404408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145c80a363483802b3dfe5d7e39272d08a3cc28b96a7d129d8b33c42a90ebaa. 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/QZWDW2490340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f379aa896989ad110efef0a8f5abc80d88edf17818e8503888a71a976f9ea4e. 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/GXD7G2283166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf526822eb44f701669f411f974b1176d044c5889d98783dbb525894bc1ddd3b7. 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/QZWDW2476340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b88d89f55b7c1b5badba0d4a682b1ebb6c17d7d342a5f23b32bc7412452dd5. 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/ESA012471836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bca6bf532771b7d6ddaa6ab9e524b470f14680c72b51eda1b119415d016872f. 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/ESA012471837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac4578fab3adfecd48953b54abb156f37a101d35f42243319c55e384aeb793. 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/ESA012471838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf75297d50f1d5c172f987e375976fb16bf3a151d402b292281a205ae8b86472. 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/ESA122461109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8801024f7433005cb2a96d8503fd0e8b88b9a87ceec22bae135790d5a070232b. 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/ESA122461113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b2543aa729d1b09f2e35bc40355a9df17d3635e18e79d3ecf386e93cc3d16d. 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/ESA122445357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f2972c0431e7525ca0778183bbac6b2a27537d2becec35f2825b7c1cca20d2. 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/ESA122441304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f5f518c331fec82daacb0fb50901a0abaccbbfd773043a4e3abce5e20779cb. 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/ESA122442973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ff60e3d81e1940e3f2bfe0ff0bbe9e2990cb9033da4f503947212f83fcf889. 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/ESA122417602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b360503c24fb01e5a9bde5839664d4153aefc38404429accb858c3db030db7. 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/ESA122417603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769d4b827bd861a6d70b517b700bfd9a77bd62f9ea474267eb87818e2da99512. 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/ESA122405022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626f3f97903dcdc5077efdbc7f52bc48cd01f0e1b6854b3e74625c1be8c0a79. 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/QZZ972414042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cdbc8131e1b257677761a9973807038ceda1fd9bbffe25ff41d175c507b798. 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/QZZ972414043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec51b2c9f0ab0d30efb0bdfef8d3c2146ad5d687a8f8652fe89b7fe152b11595. 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/GXBAV2523978.