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 0x3c5c2121e9ad8575197d225d88be6eda5cf5333f2f6969fdb95fcaa28316ec57. 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/881ebb39-aedd-401b-ba20-149574fee7e7.json and https://artists.proofprofile.net/proofs/artist/881ebb39-aedd-401b-ba20-149574fee7e7.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 0x44b6ea26a8a1eda138fba85e12b302af54aea681ccebad97baf2bc0ba4950992. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/HUA611901871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd842a79e7cbeb0da8a3428e0b1e0fcb8e1eaf80ee02533d9c4a20c2dda63a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HUA611901872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845b6157186dd1ef99cf7e903913ecfcb9f93506a1690ae5e110b2515b097553. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611901874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236b4ea381afcfa236c6b4891f5e377d6826e0c2d1ea9a31f42190b857c36fdc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HUA611901875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557815c32e8c56d251a1ba4eb9a642a5942a849512d43574c5a96bc1ed07e88a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/HUA612000421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c208bdbc6ab26bbb5fefff12a438a997a233b401d1be4d775d6b0a0ebd03c82. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/HUA612000422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c08c8ab8a7ee429369b1cfc43a6e8aede6c3a32017ec14d81042a9d149c56f9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HUA612000425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2b947b7368dbc5b599db6397b55d97f7dac7a6377eca502a83f16d1fecfea5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HUA612000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d4b76adb923eeb5355bd391e4e7081dd905c7757aa000b0e44bef5875081d4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HUA612000427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f86267f87925407eacf7378dfa3edba94c290ea22bf6a6f810498d223b6e5c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HUA612000428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3effca8c1c34a625d093634cac19b4920cf7a113867733a63b66edcabf853848. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/HUA612000429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dc3c6ba66cb6f153b2a113a305fc88de552cbc1a0a74f6bbe022d7d8d4dbc0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/HUA612000431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a727e5ab3edb62a554b9eec6b981b038d41c5ce9475b06afb0011c899e2e6a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUA612000994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c45fa2f76c4483eeeca0c8ce48c64fd99f905d87a09cffe08ba20465587db5f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/HUBDM1900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e49ba8d8d0ea8eddc873c011f8e3f90cc219bbfc53ad1f0f9652dc269db42f9. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/HUBDM1900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892e6c3f5d4b5e4e77b49e67c6993826b1b9e217dd602d25b220e4cf5b5b588d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/HUBDM1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c20c7496889e5c7ef73ae09e0e060fef63a973c52aa0ef4170be6b43e92171a. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/HUBDM1900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7f44659a780bc70223a8bc79f8be51fd77c956c043474e3407d07d008cbc71. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/HUBDM1900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f365f5fa17e1db4fe5ce177a24f4efd649303603b895b6e4a7c551bdcd21887. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/HUBDM1900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712128d85682ebd9fefe1a39c8e4bc22c2a5b58442bb4b6ee5158f6638118cc8. 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/HUA612103570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aadf1f18abfe7183bee1857ee4347b36c6b33168cbac8acdd3a51a750478e90. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/HUA612103575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff455161a78ca462b861f10994b9051d5619e9b88aab080d1d05c854e736daf. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/HUA612201989.