The Seagram Company Ltd. (which traded as Seagram's) was a Canadian multinational beverage and, during the last five years of its existence, entertainment conglomerate formerly headquartered in Montre
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 0x2491207288f01565bb00fbb48ff10b4c6c5479bbb45ce952107ad369b1fc7e97. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfef747f-bdbc-4e8e-a5a7-75f8194b5b6b.json and https://artists.proofprofile.net/proofs/artist/bfef747f-bdbc-4e8e-a5a7-75f8194b5b6b.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 0x02604969ca0664e64263fccfe20d56d10b69f19c14d7884c711af52cbc38e237. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USZXT1036408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ef4a0dd45ed7a3b63140a1e21bce10fe8f88516929c8104446a7ff349fe90a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USZXT1036409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a00c6236f163a14206eb2f58bf9e146659d5b122aeadf25e60bde4a76e24254. 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/USZXT1036436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f646062d55935f43c816d12282c043632f3bd79ebcdbcfed54320ef279cb46. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/USXQS1618254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca92df51de242cebacfa293c418ae2cf3499d67f100046b5191e005462210cf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USXQS1618257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd2651f8caf8b5ac25e6439ee7b130a662fbf82eb43ebde3baad89f259c311d. 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/USBAE0702277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38b4d71a4768c4347c1d09a026f9a058bbe6f35a87d507fca57ecba467c49c. 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/USXQS1618096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe233826c2e1c491524a97d5f6b984dc36ebc5a7d7b839c559a0c26d2e3de73ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZXT1019488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13aa6bcea514832c078ffe123eef10b057885e8e0f4efb3c386b0aa57bdf792. 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/USUYG1327901.