Lard is a semi-solid white fat product obtained by rendering the fatty tissue of a pig."Lard" entry in the online Merriam-Webster Dictionary. Accessed on 2020-07-05. It is distinguished from tallow, a
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 0xbc44977b597c120c8567c81f34b04e1c4b4f24fe26e3494ff492e4f091f4ff6e. 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/76a47e0f-5d16-4cf0-8983-b046aac9683e.json and https://artists.proofprofile.net/proofs/artist/76a47e0f-5d16-4cf0-8983-b046aac9683e.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 0x16ec88a78ad41b64ff8de91d36e4321ee3274afb92836e1edc99652fc76f8192. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/US2B20408404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb929db848ea9979e63014ea7c3643200e679471d2486aaffdcc1270ebfc7beef. 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/US2B20408405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cced4328b18798f19b5ca940699053fad9d8251aea227a202a5d74c2c987b8e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US2B20408406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6059d4e60f090276c8404e92ca13277aacec20b03e5a1080661807d4ff8e00f. 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/US2B20408407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2129204425dc279f584b24d36a22d971b2bef872f937ad5b72bb2cf532588. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/US2B20408408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b46bc89978fd6a0910474a13f412d5d4b79a8cd4fb432b5bb9e1c0e10d4bc5b. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/US2B20408409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611c96f127b18951c8fc27b399607a5c4e6ed96f702744e98d5ad601c6dcbd0b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/US2B20407202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a959cb7de45be178c4f4a039e689301aa146e91b4c1cdc80729d2212f4681c. 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/US2B20407203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0983b6f503141c4cd5756bc6fa2039b0753a5be1a78084dad4fc6649effd21. 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/US2B20419903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb108ca79e56d9f108b6bfd6d52c2c3bbfe39ade3ae3ae5acc10bf457de0fcb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US2B20419904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa311ecc441e64fbf101d05f16342161225c91de41a5616755495d83ea651ccfc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US2B20419905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51cef5fcd20765849ca64169773653ec794a34aaa7d103d1e6712465462ba1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US2B20419906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c97935e115ac69cda6dc241a819bc534302434b4152b85f6ecb78f054f6657. 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/US2B20419907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293322e6ab110813cf002a0f2449e09fa0dc1d6fa99a0950c12cec885a56985e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US2B20419908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0a688a32c747ae36e95ddb8cea2a317fdb663ba6be1a509a055abf786788e3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US2B20423501.