Changing Faces may refer to: Changing Faces (charity), a British charity which works in the area of disfigurement Changing Faces (group), a United States R&B duo Changing Faces (Changing Faces album)
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 0x1c9510f2f34dac80e692364164c743a108fcd7c9c68c9539bd1760f0d7d620eb. 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/8b9deb65-bdbc-4184-95a6-4fb9d2823490.json and https://artists.proofprofile.net/proofs/artist/8b9deb65-bdbc-4184-95a6-4fb9d2823490.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 0xcf210e72772593051a3204286a8c33e9e0933436ca45b43b9a775084292f0503. 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/NLCK41402430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df03a12a9b48428d94aa20c50f6fa8fbf833ba8686a7a11fdc02110db18ca0b. 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/NLCK41402431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641c5f167276b1638dc685d98b359bd929ada162821c61f6de07c073bab0a43. 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/NLCK41402432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83721eef2e63751608d4763688b74d12d45c78ce6e9df25257ae7ff22e38e26a. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/NLCK41402433.
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 0x022f99dde8abbfbbe4bf1cac0761d9da44407e84ad2766bf2fc0eefcd37be89f. 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/US38Y2402581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78bfefd9ba1a504578887f25376f523de131d72058fd9812ce2e9684dc854b. 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/US38Y2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ea3fa62f339d92b5c75a9a5469ff764b2e3cb71065172d3ea060e03f827d83. 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/US38Y2400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e141b78070e6446f373ce8509ad24bb92b4353d7f510caf8fe435cd4a91fbce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFME2370579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce6c03aa5a0d734021f9a7a38c3be05fb290286de74f00d493e7fdc1f41c724. 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/QMBZ92344090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c565a3c4fdef2ea112a9e436896d9e77e268c8b4bfd88a0e26135804826b4c9. 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/QM6P42351173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ff9ea1efd518aa9ac5f53247c5f783bd9148110d202a32145317e87fd4df1. 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/DGA082278907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038acf7d739da972895072b7b6c3fccafe7d5257e24cd86c9afc24a6bf8fa43c. 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/GB8KE1958253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a1ede173ec38110d61a1ddc06b1c7318d1f2ba876a21393a1c18f9c8ab06b7. 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/GB8KE1958254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fcf675e76a50ddf8227d29a2c35bb4f0538df88b9ac3649588e5065a33f08c. 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/GB8KE1953527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c2f9c0f5c728e3db7ecce34f197ba6b9a4041c27ee7887568a13926b2c20a4. 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/GB8KE1858346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ad4d44f234ec5c09a729bc3ae01d3c20ad57f8added625b712040ca0380d85. 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/GB8KE1858347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b715bca761f98f4bdde417a023a9d2fefcd851d722960f11ebc9ba0e4a6677d. 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/GBRF51800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae2591be827913b918a1e1798ad369d562025237ee75a8c145e86d4b31406f. 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/GBRF51800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3c515f1c5eb408f3a20f8cda36ab12633f5f80a46572a3019d2e379c4d3e06. 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/GBRF51800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e88a0601f0716f3f42289d06dcb1abb74e8c2b7f412a46d1efef378c3ead143. 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/GBRF51800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bad41bdb339add5d5f0e4ab35128c76cbef9ea248497bc82b4ff8119838441. 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/GB2LD1700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c36b977f939600c99591079881e6b1d9e80535d777a7c7d9cb25b1808dfbc2. 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/GB6TC1730001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9e90febb7a59951515fc50e0ae9fa86c8103ea4bbb8128dc48d780c2ab7ff. 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/GB6TC1730002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73dffd7349accecda8001710d33aa4052c79f68e0145e86dd7b7c349d8965e9. 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/GB2LD0902596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecd4cbc0696d958f68892d8ddbb45b35c243963c6baad37e02f3367232db5ca. 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/NLCK41034013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c467774bb648a8514bb4c66ceb305bada362496aa311e35b2e6298f41b36ac6. 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/NLCK41400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02aa2131aec5584257f48368e6a2c3ccf1267c2f4fe9a968d2084376c046def. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLCK41400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9486701ff98fab0cf0d269c9198f3213f8dd4ab9fb13a6102b98b132ecd356f. 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/GBKQU1388019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e2dee26c07e5a93fc4f218bce039d0f276a6127abda447a161280055014e7e. 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/GBCJY1800011.