Things Change may refer to: Film and television Things Change (film), a 1988 comedy and drama film directed by David Mamet "Things Change" (TMNT 2003 Episode), an episode of Teenage Mutant Ninja Tur
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 0xc0bf7d074e0669b926fc98cd0e69b7e3fb7f31cbc4debc83ee10650acbb36eb6. 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/9d5373e5-97fb-4723-b99c-b5ed6cea2344.json and https://artists.proofprofile.net/proofs/artist/9d5373e5-97fb-4723-b99c-b5ed6cea2344.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 0xc15245c276f2515ba5829264a5cdeb8e1a895efaffe761fa88edf83682726438. 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/QZHN92141146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba163f26072a432e18fed4b343721e84a8adcace251a4e777682009f73f78b02. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWQ2152301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd546a1cf5c7af6b12919a81ec63a1ed3f5e50650e73d2ca0c6f297b9fba7497. 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/QZNWQ2152302.
Football Fan (Schwarz-Weiß-Grün Edition)
Football Fan (Blau-Weiß-Schwarz Edition)
Football Fan (Schwarz-Weiß-Blau Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963905d4fdd491981ed3fbb53c892da3ba8d08ebbd8cb340c718258e66092dc3. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZFZ22305148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb40a3c572e0698552b9655562d3a0f4621ef33c6eb4de76b825cf7c787161fb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTB42271250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4291aef60157fd12b00c5de0e58b9d213e8a40a1d1071060b437f00aae054d3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZES72342341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4d8a70b4c04b9e575bd3b192fd6693b7c1c7c277e97d3b47df60118911ed3d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHNB2375324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41920aade2abcedb198a721724988271ce8cbea236b32000727c7bbac0fe82ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNB2375325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fb46e5c9af7368e117ca98ecb1cfcd513fb27f92ef2f1cb91ea5a00cdc1f33. 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/QZTAZ2479730.