Scrim can refer to: Scrim (material), either of two types of material (a lightweight, translucent fabric or a coarse, heavy material) Scrim (lighting), a device used in lighting for films Scrim (
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 0x54cdd976b34986fe26cb0a0821996a043a93d0b8e9b7e0e1b076acd2234fc5c9. 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/6f90489c-c6f3-4728-a54f-a2ef0b6c10a8.json and https://artists.proofprofile.net/proofs/artist/6f90489c-c6f3-4728-a54f-a2ef0b6c10a8.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 0x8211879baa51ece45fe91f0eee97200163fa90d444ed0c5c534da17aba4f4c98. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZAPK2000683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc97e4af5a2cdf9189c1f4d92269ffc66294d8a99d39e0202418ee8d5253c46. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZAPK2000684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b2ff5ce268e97104bb9af64be23ac790c532e81e1dfe354a934df5f51e939d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZAPK2000685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21ba213703b7fbcb91c7ed9b9709b37d750dab7b9d0673dd0548482054147d4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZAPK2000686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b86ed32243c16c2580fecd5f82770076cf4de0708e6f9b5e3337de2a90229bc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZAPK2000687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186d507040c250fd0ff20da73bb58938caaefbbb88007dc84ad62698121e0c35. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZAPK2000688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fd51277edb1882e137a1ca0aee6b6f3acd9988de901a9e3091d93112857ed2. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZAPK2000689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb11cc4d739cdd2b6d4c4b63d161ddc1b672c759cbd734e43741c2612a75efb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZAPK2000691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f396790a4611ac45b8711216778754e5ffd54d73ef273ad6b8e0dc0a70462. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZAPK2000692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db24a202377246426092cdc112f8555bb831ee4ede9cbaf7afff25775117c3d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZAPK2000693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5c504c8e9593ad8036198812314683d164d0545a76322ea51d1906445739bb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6P42525570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5b0a0dc1844df8a994b1107d0106fe36dab9cd68e784b95f85ab5b392c6aaf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6P42553610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7cc0e2189f973f5c2189c93e43d265106ddd1fa3d8e2eca34feea83547b451. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACY1745766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08979cfb7f00b2e457a83f09f9f026ed56a6b1797e9ae052306fe8871fb9628e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZAPK2000257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044f85e5439a644a36c8903cddc30f44c20badf1d3a145b57881e55d08312a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZAPK2000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc459ecdfb91a034ba5f712afd3cb4d2dccd941138bd93a0c1ac25db504faeefb. 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/TCACY1745804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf917fbf8f2f021a6dcf7cdbc9feeb851a583c9f136cade4049b1765b8108c0. 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/TCACY1745768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b64b6f743d4afa22438c8380a60859e5f6326eee736d9059068788c3c35ec3a. 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/TCACY1745653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7b6538a3cebcb41586b3d9906fb06d9a730769b7ade38cfd3e9b47f2c72649. 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/TCACY1745606.