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 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 0x080233b74d7198561c39ebb549f62052ef38f7b9dbdc164f75c1bdb69118981b. 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/f22841b5-192f-4bbe-a7a7-af0d59d0aa86.json and https://artists.proofprofile.net/proofs/artist/f22841b5-192f-4bbe-a7a7-af0d59d0aa86.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 0x7eb71506535fcf748f8447e36ee29ccdb8172232930a08a7378eebd138d09341. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USBB19400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5692bc69884fcf22c6240a0af4b6ac3efbb2433bd57468e9683b2d98be8201ff. 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/USBB19400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b88a064e178a1d1c51a47895a692d496ac6ff2ab3d65da14c858a68e690cce1. 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/USBB19400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deb2f72d8722ce02d1776051d4e3510c7c9c89188f488911a0b4d7b4f7db87e. 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/USBB19400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d48515ee8816f4b0a6339acfe9180e126921c64bdfeb40590a0d7064ff631e. 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/USBB19400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51de05c759fdd5038199dca2339637be6a9c8e2dd7e5a8cb6afbffb9d9538074. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USBB19400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac31aad606a60f0226b498fe2505ea08b0a52f6d081b70277af4d9d18821870. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USBB19400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf448ffefee704d758759bdd85ca3f362895f20d7e193e45d20c07fe6151be. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USBB19400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1410a7293b15786738eec57f511fbecd37a461e743d7416756c706e1ca9ec2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USAT20101295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e8b9651bdffd9c0fa6ea61686717d2cb71735f75bfebd054a530a5f9842531. 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/USAT20101300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa416d29d70ff7a48c696e930b5be05316ec02ad3962efbd5c1d78b1bd3366aba. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USAT20101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33111faf6557eeacdbed2e2ccc85075e4744f3b629515056d4321fdad7a00a7. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USAT20101310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d356c8cc83b1bed98afd6a0e8ad1f361f67bbcca5c1a45466ee8d40e19dab. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/USAT20101319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104cd499d1270bdb1dd2088853596a84be00971e1167b21ed7ca8ffb96265868. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USAT20101320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a997f2c08c45bd8e97b31c504873bdf028d873cd4e2421ef42953a6bbb147db. 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/USAT20101322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f45c886263bee9302420204167d3f6961010135240b399f8d8abf372636131. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USAT20002436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcbfa372fc67c577650be7c0476edb64820958b4895f0a2998549945c86678d. 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/USAT20002444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9447f3016481a0846258096cedd665e52c4c094ab5e64f037c0aa64302e6f30e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USAT20002527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd23956cbe4bcf6c539e54d276768ea38fb12c1a99a1e09f743a57b8196eb84c. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USAT22005206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4331e9c123589026a902109b1779817e226513b413bab6345aecdb88df4f5f76. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USAT22005207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ae1f69fb67545c010a94b41c50c8eaab53762a99da7f777426c82e783004af. 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/USAT20002434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03773f7c37dce0e996c05354c2b16e8b937675857a8afd986d94a886dcc24848. 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/QMFMF2375554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd2e0e8d615edb009e735d87e8bcabbd216898abd077ccbc36d9aba82a5bca2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USAT20101312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9447f3016481a0846258096cedd665e52c4c094ab5e64f037c0aa64302e6f30e. 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/USAT20002527.