alt=Saffron|thumb|Saffron crocus, Crocus sativus, with its vivid crimson stigmas and styles Saffron ( , Persian: زعفران) is a spice derived from the flower of Crocus sativus, commonly known as the "
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 0x73ab60b0cba2b92a0d4c5408b110a3ec566286a9e00959279fe018f534bd89ff. 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/4408cdc5-e02e-4742-aafd-55bd9f4f0c75.json and https://artists.proofprofile.net/proofs/artist/4408cdc5-e02e-4742-aafd-55bd9f4f0c75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Star Fetchers: Episode 1 Demo Soundtrack
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 0x07a12f4905f2c1b8d070ca150a62bf8b643a9a767385c2b55ef5fdd514eaa941. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTH92338536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4464f9bf57b92760615631727ceffd0eddc4a424b0d53202a742220f1e2b85d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTH92338531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f428c5610a03c1b50b8a1fa959a863d0ddf27957fe45757809a75cb37ad0ea1. 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/QZTH92338527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da0107aa5078fa33769ca5221379ed340e841e091196e9354ba25243dd07adf. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZTH92338526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18094a889f0c1e6bb401798452512207db63a5e9ab86e92d295535c823660cf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTH92338518.
Star Fetchers: Escape From Porkbelly Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b899e01088eeea84edb531ef81ae164f5565bd1d67221e6ca559a865ca0ce0. 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/QZWFF2454738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b7985ea20613e6e20f51ead7142323d6df94a7773de1963f764d05a2bfbd2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFF2454740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15058af1e8c7c7f99dc46c0cf10721a6a5c74f2e6f7ae139860190137e361bc4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFF2454741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee88184296e992d985c3333fefad05dd89ca6350d6f55fde654588c7036a84d6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZWFF2454743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20e802fdfa3d251f0d3ca2cd27726844d76fb526d6b5b06c428c1428d50e99. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZWFF2454744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae7acaa27ba7f5ad74d8ecf6767b4b1b87c3a96d58c49bad7f54837dd96a4f1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZWFF2454745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a64cd9e3588afbaf240b296612042fc67ae75751eb60bd4ed097003661cc9bd. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZWFF2454746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551ae8bf058a38afddc5b9b26e882a0d2a2523c726e1cebd86777cc258ab41ee. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZWFF2454749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ce6af5e282083ef4f9599146c4b062c80c7526184594fdfefa16ddfecbed24. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFF2454750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9024529d70ee77e1b82da0a31bdf2fec85c74f0ad67509a1dd165769e71e2b9f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFF2454751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb072ea9fa23e183f2f39ca2308072ea148604785baaac5e096fe23148c9181c5. 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/QZWFF2454753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c706c84830f63f07456373d4175442e3099ceb15668b046482502ecb2d2517b. 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/QZWFF2454758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0953423770a1230ed43f3e7e06c8dc14fbfcb2e776378e56afd1538680a82e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZWFF2454759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4784a0b99c7188bea180c65e5146266d44bacd2994671230b3fd3cbb7bb41b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZWFF2454760.