Ser or SER may refer to: Places Ser, a village in Bogdand Commune, Satu Mare County, Romania Serpens (Ser), an astronomical constellation of the northern hemisphere Serres, known as Ser in Serbian
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 0xeb6ea42b4b54fd14ea4806a1eea7f5e706ae42284a5670175bd013557c900a2d. 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/77111d0a-272d-4b51-8ffe-5697fc544041.json and https://artists.proofprofile.net/proofs/artist/77111d0a-272d-4b51-8ffe-5697fc544041.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 0xa9f45e02ece29ba4d6b8117e2b88b688b17c95f27da77d6222ce3c51f7be5ea5. 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/ARF101700474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1abc21a90b75d7b55f4e9ace6e571c425f873d5eaa128bc491c83a46139042f. 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/ARCZH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281edc8ccacf95247c2ebfda86e6334f7765a7685d17d85ffb3087004819e28. 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/ARCZH2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28268a7c90ef084e5976d4ae2376b84369b01784ac9f259ea949ca7f8a2b354. 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/ARCZH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116875f765ff5218b1d1452d45e50725121fec892920680a59e2513b306a5819. 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/ARCZH2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d3c0276eef6f369f522f449be6fb57c4defa0ac3152cc64fff40f8ee4c136. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ARCZH2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cdfa0c0ad42729449a3700f821204d56e8287111b20a0ce8c62a43466c222a. 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/ARCZH2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1abc21a90b75d7b55f4e9ace6e571c425f873d5eaa128bc491c83a46139042f. 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/ARCZH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04202ce87b397ad4e5584e88389d1278bc4c78297f90614d5e3c0bfe5f49ec05. 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/ARCZH2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116875f765ff5218b1d1452d45e50725121fec892920680a59e2513b306a5819. 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/ARCZH2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28268a7c90ef084e5976d4ae2376b84369b01784ac9f259ea949ca7f8a2b354. 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/ARCZH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cdfa0c0ad42729449a3700f821204d56e8287111b20a0ce8c62a43466c222a. 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/ARCZH2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d3c0276eef6f369f522f449be6fb57c4defa0ac3152cc64fff40f8ee4c136. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ARCZH2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56b37b6b53c30d1469c7e348c89cb1c7dcca8cbd6c950cc51eae3bee07ddda4. 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/ARCZH2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9202fab1133886f9f62d08caf57ade9965816bbb16f48150bb3ae04ebe77d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARCZH2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2decb2dd5b89fa2077a92ce771045117da1d78eea045546966258cd5782f0a66. 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/ARCZH2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa664c8c2a53236e142fb7d516642230fb1799f192b0654f00fd599772c7699f2. 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/ARCZH2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb938ed90d5dd9f2b251d5dad7cbf777398b5e69ba204be9d3e3d69adec94b354. 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/ARCZH2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f192043e891b70b30611ed3e459150fff50b7e780da33955d239b49324520ab. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARCZH2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2478dfea35c35248f5f7f65e0fbe283837f331e71ed1bba61aaa018b267749a3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ARCZH2300021.