UL or Ul may refer to: Arts and media UL (The Belgariad), David Eddings' character New Hampshire Union Leader, a newspaper Unwritten Law, a punk rock band Businesses and organizations Cambridg
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 0xf50769340df79405f9632d91e7bf73ab98ba9af05fd863555ffbe70a0e345e63. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d4708ab-a98b-4402-96e2-081f108d6b23.json and https://artists.proofprofile.net/proofs/artist/8d4708ab-a98b-4402-96e2-081f108d6b23.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 0x10b74ff971a8deea4575557dbf4c88c1d65135b437f6218f6918864bf4cac9c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO2DB1201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da6ad1dc8cd3f65e7ad53b656df5bd79f214096d3f892f7b040b0f9cef403ba. 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/NO2DB1201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74911722f6b82e4c596466fd72f1cb683b265765ea03c6a253d8ca881fdee21. 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/NO2DB1201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba432af9c116aff80be574d7b6c9e81c499df06128b0a0e6611c7ec8d4feaf2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NO2DB1201060.
Trofaste Kjærlighet (feat. Trygve Skaug)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36783ad9ebc98f9989becc490eb6ab9204ae406b288e5cd3db3bc90dfec496f4. 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/NO2DB1201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30001417a66db4a2f8b5d8a7170e1613795582fa7ecf1c4aee54acc5270becb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO2DB1201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba051b2ce958c0d716507fc5eaeae6db34138aa9c994033529c4a944bf36693. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NO2DB1201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe817517c1abd3b48b7ba59e91e4c6ff037a2ec19dbb41fc57a5511f5cfc728d9. 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/NO2DB1201111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23626f49eb57b600bd0edd46a1a3277dbaa7adcfe40545ccb9a7aabf2f96f4a. 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/NO2DB1201113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d3015c4fffb67e89c7c1656a5f2f5d933d7635db51c40d53b2df63c27f8ceb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NO2DB1201114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b9f466e698922dd091ee52021a9617904242de6bf3750fefa45d8c9048ff1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFK2153831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b9f466e698922dd091ee52021a9617904242de6bf3750fefa45d8c9048ff1. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TCAFK2153831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa868b3f28e99887334e1e51180da958e341a67456575b5284021577ca19d4d79. 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/TCAFE2021712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740b4ddf93df3e153495651f39f9e9e85e55d3eed8f4ee71ec0328f211a526e. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TCAEZ2006454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5a78655c375d84e6df4dff05e59f2afe6916ad86609c3b6feff802cd56eb51. 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/TCAEH1948344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f76af4efbfb897a28fb9064f0e8cc73d44cf792e7b06cf1a926f6c1737eacf. 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/TCAEH1935877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedf6da85e1eccc3361aa01566091816fe204c125e77e1d47973f5af2acb5a3a. 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/TCAIL2475215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32c8a124e4773df719962df34bc0efcbc99fbb607dc3f70f2c1e72d56a50a8b. 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/KRA381700583.
Myung Soo House Ddok Bbok I (feat.Lim Kim, UL)
Robbo Nation Music Group Compilation, Vol. 1