SYC may refer to: Yacht clubs Sayville Yacht Club, in Blue Point, New York, US Sligo Yacht Club, in County Sligo, Ireland Squantum Yacht Club, in Quincy, Massachusetts, US Youth organizations Sc
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 0xd0ed11c29c70eaca1058ac450dd0749a88d2fd9e19be3f59ec2e694be6aa5be4. 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/4d28cc8a-14a7-4223-b2d0-76e3a633c988.json and https://artists.proofprofile.net/proofs/artist/4d28cc8a-14a7-4223-b2d0-76e3a633c988.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 0x94449816e9ee9a12e26d4c219d7a2cbf09b42506e37b0389abafa210e1d6c690. 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/QZHN51910206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc993cb5bafd65d928ec7dbf5834d62edfab76e4ad2066e2aa8b4aebdb409e450. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN41979709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa32283309b724eb69b8e42da21113d669849195217773ebdf2b14f81102fc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNWV2139132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56999730886bf78bcb28022c0b5769ef13d581801c9284306d2dbb8b3d0dc36e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZNWY2190474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af6d20696ca1e3e06397d7c17b90f5ffc69fad79e389b318c1c28c97240c530. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6P2293279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4135e90eb87fc002e4df0abd5f6b99eb938384b617eee7fcb2fcfab16dfc0744. 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/QZK6K2228412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd028ec00b1fdea225be8aa38eb739f79fc9a6255537fd6482594d6cd9a389bb. 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/QZMEM2242249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0e45aee2c76bdd36cc4951dcdc969ac3e0baba6e71e013281e8203bcb86e5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZNWV2253916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be84c8b271ddb2649aa0e61a677f2559e23e9ef9e1711757038ba450f3c6c5d. 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/QZTB52206959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5800901b1b9177036db084371eb2582d2ef51ab706efc0b5ecbfdfa39ef91bdc. 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/QZTB72254764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74955e1a94def2514f8f90f5540506fa3b6455f98186fbc5b0fd1aaadddaaa91. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFZ62385101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6688cf688a64cdb6b20b06db435086ea9b6d117eb3154bc1cfed3df86bfe0c9d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZWFE2319696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf66bf1ff6a519b0756cd98cc61b0db9869aff476e271d5b95c597abb52fe24a. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZWFS2403106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52916ea07dba82a76a370221ad0a0172f99dccb80ff58be154a30b6a7db2916d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZWFV2466735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdced4b68a11168de5ac9d4bfef18764484e454b9a0cfbfb4bef284589e73d357. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7Q2458039.