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 0x8ccbb8b68cca4f988af69e0333f4103cccf7c14db6fd568b97308534f478abfc. 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/03e3ed8e-4365-4f22-85e0-4b434f2e98b7.json and https://artists.proofprofile.net/proofs/artist/03e3ed8e-4365-4f22-85e0-4b434f2e98b7.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 0x407a1caf45645cadfba4c25ef247e02c3f297e0b6cd7551a47fc3856746287c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAE249800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aff84017e5ac8511264fa4fb67464960d6d9a33040085a0ec163286b1eae9b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAE249800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1650137058ef47bd3b00386144671e770c52f415b230a9781a9d994ceac0c6a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:53Z), 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/CAE249800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dad13f801d0811029e46e102bf064819cdd7f1a8cabea8fb2483384edf04dd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAE249800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dccd80e61753cd1396fe1c6a75b586fd9c1a7da77ac1d7736dbfb93fae3959. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAE249800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f95c4125b30d16991eb289613baaa72a32df892ba048c5f1c108cc90068f9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CAE249800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae222e76800b7a7c3af7f5b28347e0e0cea3586502aa7fd922a086d5d9e50a9. 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/CAE249800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05367a6d9bd295c422b56f62631883551c9f4a89dc74af64303080067b2e1033. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/CAE249800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dccd80e61753cd1396fe1c6a75b586fd9c1a7da77ac1d7736dbfb93fae3959. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAE249800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f95c4125b30d16991eb289613baaa72a32df892ba048c5f1c108cc90068f9. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/CAE249800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05367a6d9bd295c422b56f62631883551c9f4a89dc74af64303080067b2e1033. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/CAE249800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d6661a747effba11ec355cd075ee37ac406f81ddf4dddbed517a337e6ebbf. 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/CAE240000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2cb7b6e12a7cb5bb24359afc5dd407f68199195dd23596a23e83ed797eaf34. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAE240000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62065ba89ae85addd90174a79e07712f7ed01694ee275983c581d440cdee4327. 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/CAE240000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f5728cda225333ab3ff2fa4f7739a1e932b2fd7e171ab965244f2377b60e6. 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/CAE240000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb689896025edafcb12f6412bc2e397c3770d81ac218106a759991e947562a16. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAE240000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794a0603738e20e22fa64066bac08d0a2f3dd3429f8abcd52ae19005e7d9753. 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/CAM370500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c9be2a1d016a93d161c2f1ed736abbc7939c990c8b028d363281b858df4a1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAM370500513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f95c4125b30d16991eb289613baaa72a32df892ba048c5f1c108cc90068f9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/CAE249800007.
Pussy Cat Pussy Cat (Baby I Need Your Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769fae83388aabcdd68bf74bbaf1709269cf66dcb676dfe70f0253ed627b7c51. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TW1768271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d847273fe97a20bcd52bac337ff715ec2971d5b1a9fd9db29da9d95605946d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TW1768272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2890d30f071dc5fc6409173d7b5e65b1d0735d8e568c086d843ceebc4f84b1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TW1768273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9322721b1d2ecd3ec3202e5955c2a1c6777d322d999db63df375a8327eca42. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:42:44Z), 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/QM4TW1768274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390898b735c4a61a42e482625927526aab08e78152cd0d2107b29634324a7aa8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM4TW1768275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748d08d9f892430254223c512f734b0c8095ec80a3720771e42f59c3c9536621. 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/USTC40890522.