Marion or MARION may refer to: Arts and entertainment Marion (band), a British alternative rock group Marion (miniseries), a 1974 miniseries Marion (1920 film), an Italian silent film Marion (202
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 0xdd638333b2387f5f6da609bc924e0de678fa96c98b30a42cbe512edbafef1dad. 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/c03be823-b781-4c0f-b79a-5c2f2d988ff7.json and https://artists.proofprofile.net/proofs/artist/c03be823-b781-4c0f-b79a-5c2f2d988ff7.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 0x64ac6e758c1fd70c7f42255dffe538c0e77b7f4d079cd3e6a6e31fcc8484396e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FIEFE7700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31171edfd45722fe649d70f54e1978d2e81f084efab0ba73be6ebb19599dc57. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FIEFE1100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d78ed927000370e33fd3aabb82a33d2da9cc1fbf69d323116610ec9c161ae9. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FIEFE1100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0fa33e2f96a4d7831f818a9d1d18c5046dec0ce2f355dde601a9722dc106aa. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FIEFE1100576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee4b310a577c593e950f0ec0d2de84402efd80e1f63756b6d142771c6db6c5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FIEFE1100704.
70-luku - Suurten hittien vuosikymmen 40 suosikkia 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0577597e8bf907fcae07c8e777a0deff25ccfa9d6470e41df21e7f5e0535a4b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FIEFE1200243.
70-luku - Suurten hittien vuosikymmen 40 suosikkia 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6aefdc1ca412536c21817998a397a9e750a7d2ec3d5afc6deded37e9d7f1fa. 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/FIEFE1200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab4474ff70dd9b537d547e967180492332cf86df5214837e05d7d674da6d6c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FIFSC6701600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd0ba9f171bccc293320a29639e8126e7ed9f9b548b21bcb7a4e250ea05fca. 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/BRB580900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5088e4631b08dc03910303de64c7127f2e26cda60a58d7b6d283dbaed6fcb25. 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/TCAFA2042842.
Bossa Lounge Brasil, Vol. 9 (Bossa Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63385c449b6712b33991aef6f261ae7b2e2243ce4d798b061a961a4fc75e3d. 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/BRB580900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab4474ff70dd9b537d547e967180492332cf86df5214837e05d7d674da6d6c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIFSC6701600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490f5d61985089e3bd95e58f0e5a0991090cca2134ca4c9c04d14339619fcfa9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIBMB9600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f59d03048585071dec2836c6b5318ce3694c692834793a1adabb51e4f9a5c3. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRB580900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a954d163595cc2a099a24b54c5a58e70414a9c9c4f359fd03ccfc95c820359. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FIFMF6300001.