Saco may refer to: __NOTOC__ Geography Brazil Saco River (Maranhão), Maranhão state Saco River (Paracauari), Pará state Mozambique Saco Bay (Mozambique) United States Saco, Alabama, an u
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 0xf8e20180267b6a6113a92da7f575a27d821fb7f054deb8270e56ee34cb0ff69e. 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/e5a3275c-b082-4297-a8c3-1ba916d9cce8.json and https://artists.proofprofile.net/proofs/artist/e5a3275c-b082-4297-a8c3-1ba916d9cce8.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 0x327d14140fd86f75398f97d97d08d91aa2df90b9c12311c2869af460eac123c7. 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/NLT2H1900129.
Stranger In Paradise [Alex Cruz Remix] - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d130a6581913c5231dca1192f9bd297ff0d9317582d25fde3cf3213414942c. 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/NLT2H1900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e64447bee0b5a21e08e41661d98fce1871ad0e3414207c33bcbce1d248a68d9. 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/NLT2H2100248.
The Game (feat. Maurits Beelen) [Yann Muller Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94b0a9b61fe80cf71bca112965a44494bf6351c1aac6245cb32ff3f0785ed19. 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/NLT2H2200325.
Gotta Give Me (feat. Sebastiën) [HADES Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815d61b916498e0404bb304d62fe81ededf173487973e632bb156f0a62b59c7d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLT2H2200581.
Take Me Home (feat. Sebastiën) [De Hofnar Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebdf686a542f0f0c2df0b14f21be01d1d7bff152d96b357cdae86cd45554307. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLT2H2200934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63d593894cb03414e14533c9fb257dc1dd4185536614e886fc90ada2ae40e8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLT2H2300225.
Stuck In The Middle (feat. Adrienne Florence & Kasper)
You Cannot Have It All (feat. Liz Beekman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0016cbe00575bd26074494be2ad2391f07b12dc8f2fe59b0b03cb2f84ef5e0b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/NLT2H2400732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2e2e2bffdb02aeb514ace2bb8e6357960b8020b224c9edbffaafe3dd796a4. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:04:48Z), 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/NLT2H2400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2e2e2bffdb02aeb514ace2bb8e6357960b8020b224c9edbffaafe3dd796a4. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/NLT2H2400888.
When The Lights Go Out (feat. Maurits Beelen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffedfe15223a8e71809a7c238e313d2dc4e8a9460a954ead15bb7f0757f95434. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLT2H2500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79be343f2bf4203ff6892965b930ec3eb57b146ae44deeac9b223f8abdab83f. 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/NLT2H2500796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c985f70eacfc9f8e1fb7096d3aaa868ee1375e059f65eca16596c86997ff888. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLT2H2500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c985f70eacfc9f8e1fb7096d3aaa868ee1375e059f65eca16596c86997ff888. 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/NLT2H2500880.