Liga (Spanish and Portuguese: League) or LIGA may refer to: Sports Basketball Liga ACB, men's professional basketball league in Spain Liga Femenina de Baloncesto, women's professional basketball
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 0x3eb14123a6554c3736bfda967802325fad0d2858c677bf69664f735d96dec344. 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/78d0a919-869e-4e08-b771-938dcea35f1e.json and https://artists.proofprofile.net/proofs/artist/78d0a919-869e-4e08-b771-938dcea35f1e.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 0x4487702d9fe376a78348f6d1027cd5cd432d86dedb40bc9e3e6e47cd6c095fed. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DKC6A2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88253b283f2abef4bfdba5950c0cc238a830a0430d74d0e64162867939bfa2fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKC6A2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39c0c1697975a02f17e66999c67ec077caf4bf5f2146f25475c8547a1524da6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR26V2004571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47706c2fee7a83ff65e1ce645e598f4a1eec676ed36640c8000c636dcfa5dcb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKC6A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43d5fa692c4737ecd5bb01bd43221d5f6643b2a42a46c6bd92a354ac63bd5ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKJ822100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cbbe5cb145655af5f3e370b2ebe9ab916599b548ea4d5a9324af7b3c290ffc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKUM71800356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd372f73a1c563cabbfee40df6b5e86285baa7f289357a00091107beafe8706ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM71700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563c4dcf61a77ba5e00b0ca8fbc760f6f99979039c80fbf995d4c8273315007b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM71700132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814a12d24cf68d8bd6f9270f4dc9da43cd6c0cf06fd1bb4bafd5509f4a00e2f0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DKUM71700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe411e61bdf147974afa8fd8b931649ace6dff6c63dd9d84030c98698cfdad11f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKUM71600340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde0abb45da4cbb634bb514dcf45cfe55cfed884c2f4ac15e12816301d8e8214. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKUM71600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe17f7e82e55a2d129af830780c3889717cdaae1e42c3a1a6d73ebc394ab380. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/DKUM71700133.
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 0xab1be68d7227bea290a2b3b42b261da7bb6e7b286317656d0c29455d0ea59461. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:07:22Z), 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/DKUM71700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39580ca9054d97a6acdf167b7178e085e598019c36b5b2782f5a39f4c8ce5468. 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/DKC6A2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccec85b7d77d84afb8b39eb6ff1dc722ba87e00e76a0b96fc81841522a3d1624. 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/DKC6A2200012.
Tidsrejsen – Julemusik og julekalendersange
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda7ad0c70e2627f35060241d0c562cae01e8acf3ad47d416154bdd6024f7d3. 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/DKAZA1401016.