slk or SLK may stand for: Super League Kerala, a men's professional franchise football league based in Kerala, India. SLK (gene), a gene that in humans encodes the enzyme STE20-like serine/threonin
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00705f42b81fec7c1d885512afb3410b22c11b9840da82ca1bf3d55c2874d34a. 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/60bb0bd1-bb68-4b01-b906-a97032e9a9b1.json and https://artists.proofprofile.net/proofs/artist/60bb0bd1-bb68-4b01-b906-a97032e9a9b1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d45832dd6c6c3a10814e19458c841631f8be96551c4dafc6951d0358233224b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:06Z), 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/TCAER2095923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b222013472352a85d3e7f9c66e67abd25614e09eaa94298c7a09e7353cdc4c5. 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/FRX872001429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc5c294ab203df4f5f99dd71d75501c352820d578633dff199676e102596a0. 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/FR2X42025771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ba59a6c0df566d7388ab785d3e20960facbc79af32d9c1404fc668ebdb255d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:02:28Z), 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/FRX452188357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577c5835a2b0a80199757cf14ba15ff76781ca52dc61ad753752db9d0367b9a8. 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/FRX452188364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274fc26d47d237c8b2eec03785f4e6727e5d759946edc97a7a855a98351f8e51. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR9W12217709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d51a0719f1c6b27980bb3de33282933452da5f1617483b81b23213944e900c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W12243889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095cfdc007fb90b79cdd11b0ecc1d8402b1212769e0a04789348d5d87d9ee716. 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/FR9W12253188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cafbbf23bdf279c6e278c4ad99831fb71b442d5b4e47b0e7bfbfecfb68ab9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12314549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b5763631f70c5ae28469a55dbe1834d74ad0d4f29401c18ba7c3777c7990f5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W12314547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e065f5afcb70a6b8f6976d4b506c5974f0c9fb1e882b87c159b70131e5d251f. 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/FR9W12314544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095cfdc007fb90b79cdd11b0ecc1d8402b1212769e0a04789348d5d87d9ee716. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12253188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6ab36ae79ad53626cdd60a0f35f1bee6461da3540527315a4a0350ce62731c. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:39Z), 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/FR9W12253186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b5763631f70c5ae28469a55dbe1834d74ad0d4f29401c18ba7c3777c7990f5. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:04:28Z), 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/FR9W12314547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f20e1777579ec8f19476d8e002b59e0ee9629737e77a2d2c6fcb6718e08b41. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W12253182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cafbbf23bdf279c6e278c4ad99831fb71b442d5b4e47b0e7bfbfecfb68ab9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR9W12314549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f25fafd4d93706f9ac216d73c45d07c7d6a5d29bf0e57e83be2f9382d11e07. 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/QZMWW2522332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b2e18cddb00a2eac63ce84bcc2cc319ee106438cc5a8addd940f281940ec9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202227095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0690fe7eda78be0891dba503c7656fee52dee53d14958907ce40f1f1580b75e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12237327.