Happy hour is a marketing term for a time of day when a venue such as a restaurant or bar offers reduced prices on alcoholic drinks. Menu items like appetizers are also often offered at a discounted
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 0x756e9aec1965d239da7155d8341a3f440f26c8a972a36695f7c6bf57db58f450. 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/bf78ea55-812b-4063-9d04-7164bef3c394.json and https://artists.proofprofile.net/proofs/artist/bf78ea55-812b-4063-9d04-7164bef3c394.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 0x4a115728028b47c059b841e58c24b6280d53bb8acf9161f77da4cbec7f95fa73. 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/USHM22351250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6842f8ff5279daf77ead5328f26953283f2b04f941eead0ecf3080c52e3b21. 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/USHM92249646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2005d92b31a8d984e2a7669aad9634c480bde69e5dbeedd9948aab3dcbb308. 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/USHM22130256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a1fe3617a12a155b5dd9c8ee5302f7ad0c479be814b433536cc5b0734b9cf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM22130257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb702f9450fb18cc77489324378832e9c2e91b692079b01d53c1c7887f853a3b5. 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/TCAFO2148484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc59b823b91a0ea799ece0c689d9e9d0e2f662590c0efbe8e4ddc5e21ec7d83. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCAEY2022592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce9935b895eea0fd38611e249c0cef92f645caee54334eb75b72122ffe8adc9. 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/TCAEY2022603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8022938da8a8ab0a6d079bbc45aee6acff02aa3eebf9df23e004647d9664033. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEY2022608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8041645bdcf063913a421086f948ec949cc0b8bb4b2c90505f2ab411cec651. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USL4R1902096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd99e13384f2e4248f220ae98f9c8db93040efe9b45bc8dc1d13b13579f326b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USL4Q1918137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde1b2237fa86e03386178c5b5335e8e28a5bf8e8f97ee267f8f5953d092e767. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USHM81958330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b1b94ab94c635bb34898af87c8aa1b57e2c4accdde64e614b922946e752619. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGH1962727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1c3fad2a2ebc86339b2e5eaed8c7b7096147f861dd2443b638662983a9b4c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCGH1962728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ee629cde7cd816e26bb3f8960696fa46636335c0a57278ae411f044b295fe. 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/USCGH1962729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcc2fe8681e20763255ca57e4462f93de92b0d2058590d01c6c8127e3128381. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCGH1854669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d32b22994b809f17ca4a7411a53a15567e6bb34e2075a004b4eb9980c3cab6. 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/USHM81708588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dc490e21b16429ed695baeb37212cde81a37cec8d6ededbbf1e7f15d55a88a. 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/USHM81708589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b867564717da10cc4e690cd2cf2c70c8fba84fe9673111404ded7caa323d1a7. 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/USHM81708590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903e9f206df1927a783897d47d87866ac81e9c3e3973478ee40f22ab39a72d5a. 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/USHM81708591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852329a8f77740b87b58495e74e569118446395a31c3d274571184664b5a1a27. 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/USHM81708592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31862140774d7626b29fb8f0690943130dc82161d3c35396129e0ee105b6e844. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/USCGJ1772972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959dc3e15239d3265054ed8bfa4856ac22dcc7cf2c21687604452edf07708ceb. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCGH1783538.