{{Infobox person | name = Cree Summer | image = File:Cree Summer 2020.png | caption = Summer in 2020 | birth_name = Cree Summer Francks | birth_date
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70bf86540fab48f2ce85c49ebaf3fbf96e7aaa0cd297651c4168e9861133e00. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6650785b-d71d-4355-b9d6-0efcaf36c199.json and https://artists.proofprofile.net/proofs/artist/6650785b-d71d-4355-b9d6-0efcaf36c199.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b09297b9903f699fe708be3272e96dd88e471b764c263524f69f75edf8ca13. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSM19704640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670917cd2946db6dbd114591ed6570912c0d4979356537b9cdc3b7f982e3d25e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSM19805314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f7911ab5f104d2f79489d57967112841746e8b5ba1258e5bf4ef15ae03ff88. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USSM19805315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddff8794de08ed848569ab8558ed3c2e4f2cc2529992b0f15a53d7af201bb728. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USSM19805324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d137f63198c7ee0b1d2f92f11f754268f0534024551c00828deb06c6d1abde. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USSM19805316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aac8209f214bd618fff24f9ba7c3944dc0180d66b1309550007921cf0f7a4d. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/USSM19805317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c66115fc41e6c64b5e8882f0dc29c1de7ff7216e7078c9ef8160823205c6993. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USSM19805318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97df4a89b9fc7b4a97c5f4c37ed467d435e111473948a3babcfeff3d789ced. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSM19805319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0040de3b2b9a01f2fc3e252352a5ebbbb9179d777672c0491b39c09f3604d2. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/USSM19805321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ffddd6fc1fdc74e2f9dae256cb2636067a02ba669e5e3bf4d39631eaecba6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USSM19805322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824f4e12886206c07dcb92d504f57f2dce07a3243e8a68b260f9221e6a1566f6. 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/USSM19704688.
Merrie Melodies (Songs From The Looney Tunes Show: Season One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d41039a3d63d7f937893dc6831b91780911e213b781d9097529dd92d7c45c. 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/USNLR1100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292119576ea14ff7bb08da874f54240a17377aea848aae04e3789077c3d07ad3. 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/USNLR1100041.