Scum or S.C.U.M. may refer to: Scum Soap scum, an informal term for the white solid that results from the addition of soap to hard water Impurity that accumulates at the surface of a liquid (espe
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 0xfe47e9f004bbebe3f3e7edc6f15333fe27fefeb968561b2c89f1b5b7965a4020. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f475d73-7510-47ea-a33e-c7431b5c7478.json and https://artists.proofprofile.net/proofs/artist/7f475d73-7510-47ea-a33e-c7431b5c7478.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 0x94a2df0e2e39a7b54fc3ce3184d3fa66d9c4085c5f8cbb9be03a2dd7d4fabecc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NODOG0505010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09382786f75049212ad2e3652da19086f8b4a62ab7193ffec77afb8da56945. 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/NODOG0505020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f279e03572b69b95ac00c4582431f40a9510bc486b4eb999cbf12dad92b48d. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/NODOG0505030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c4cc81d71bc191ad1ae8662fd24c6594c4e950d0a7c07af85385a73dca122d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NODOG0505040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadd4cee0ccbefaefabb31538eebab4487b9b65ae6abf09304f2ac9bae9a77fe. 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/NODOG0505050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9270841b42959c06edd39cff7967669670624cb82a897879a4aed837b60e7c5e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NODOG0505060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd6c74754d4161c9d9097f9dd5f1970a4fc8b41a63a4d95525c61910b90d67d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NODOG0505070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5353c5118ffe184179b97c806bc67f048b84341c28c8c8f9b5142aa9cb8dc2e7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NODOG0505080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f2e8a6ee29849087e4eb50daad98ce783675b9989a544293a6feaeed6cb84. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/NODOG0505090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa392940200ba6e4e02ea5e064b772075d27c84a7108ac34edafcc4ea34227ea8. 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/NODOG0505100.