Nineteen or 19 may refer to: 19 (number), the natural number following 18 and preceding 20 One of the years 19 BC, AD 19, 1919, 2019 Films 19 (film), a 2001 Japanese film Nineteen (1987 film)
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 0xcccb7baff7d19a0431370b65d2406d620167063ac9d7ed2e22d37de385f5b8e2. 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/5ec034e9-96ed-4748-bda5-082b2e0928e3.json and https://artists.proofprofile.net/proofs/artist/5ec034e9-96ed-4748-bda5-082b2e0928e3.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 0x23abb5342c1d19ab2d35866aa839848ebc3926dcb6031a159f289a3f74ba9d12. 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/JPVI09919410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e10ebedbce933bd7518752de13bfd4e723e1c1ecf0959be6167f64f0af609b. 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/JPVI09919430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873363d435d670a34727bf302512425882adaf79e43114c85b3e03fab2910cec. 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/JPVI09919440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbe5a96cca0cbfa73e0f6c1006ef7f2f53df54a8c9a3c4815fb8f7c58796cc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:10Z), 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/JPVI09919450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef3a3934af4e846792dc7c6fa1dceea92f8a7abea96b82bd23429e8ed47646c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JPVI09919460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda13a47a9f66df4021c6863b54cfb94522504d386c40752836d1da886def6c. 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/JPVI09919470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1ee20cf484a67d322f6f750defc05eaebc851970eea774cba14b0989315020. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:51Z), 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/JPVI00025700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed853f4a7e271a99fdd2f5c881c467ca838be4300d3007bcaafd9223b27f98ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPVI00025710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86c781bf7726c583b0a89c3dd6266e8505e10d8447cad4fecf6d9a83efc93a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI00017320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ae4064bec8d64d1c634e10a434110657932a9c1da673bf0452efbd1e29b806. 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/JPVI00130400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba1ff768f324575342249b3ec70fbdb459fb123805eedd9bb364d0f8c53a0d. 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/JPVI00130430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde924b543e760cdfe35dbebe51535c8a1404cb69e9d888d592e57d27756be48b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI00130440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e60addbd4b1c6434be5b6da027faedd152ac9addfa9b464d3603a520a6c94. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPVI00130470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873363d435d670a34727bf302512425882adaf79e43114c85b3e03fab2910cec. 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/JPVI09919440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda13a47a9f66df4021c6863b54cfb94522504d386c40752836d1da886def6c. 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/JPVI09919470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbe5a96cca0cbfa73e0f6c1006ef7f2f53df54a8c9a3c4815fb8f7c58796cc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPVI09919450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe365c57d68d2875ea4f7d1d6e7f513f3306e6128c8bda0689e33775611326c47. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI00130450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4842c136f38b2760ac25549f7fd43356b7afb495a6ee62758f103251801d30d7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPVI00130420.
いつもどおりのまま（アンプラグド編）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecd4d0d4b36bcdb91a5140e39559fa890b18cbca2cd9f2906b9387c5566462c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPVI00210770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa809435272ad8ce4bf3cf8a2da2c41dd40b90725122c7bee76231e94a7162bff. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/JPVI09919480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1ee20cf484a67d322f6f750defc05eaebc851970eea774cba14b0989315020. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/JPVI00025700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6359769e863ab58ee00e33fc0f7b36db51a61ffcad882066c1924f21c3e2fd39. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:41Z), 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/JPVI00025730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf874e083097cbc4c28f535b99bbcd4e73eee0b1cff9d72c553bdb6ab5fefe0a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI00025740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd144d0841449662b87058ef3d10f514f20a386e2a54812c8277528470ae93f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI00130410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b39a10e78eacdb93708e6f42a4d1fbebfced540da851ff1966a00834aa00dd. 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/JPVI09928050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6500b9154f69d402a28fbf4df37e00b9d1fa52ba0daf16ad85221ebb813bbf2. 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/JPVI00044540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5cbbaf3426e9db548018783a8d2dbcc820d4c4a5e1a541d63de8aa4028f756. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPVI00223150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45998a9024731c6b086d33ec87ce8a70cc583e8f7c675d2da8b5b9f1138b091f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPVI00223180.
ありあまる地上の憂鬱とよろこび (BEST LIVE Audio use only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b55fe5a864a55780f80aeb68338f8e502153f5382654991658d26a5f5434c55. 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/JPVI00223200.
あの紙ヒコーキ くもり空わって《合唱バージョン》 (BEST LIVE Audio use only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d442c9cb9886c06f6d01d2ae803ea783099f44a0ca1c6e79df2106ef3ff51a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/JPVI00223270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8664601f40533c11dcd382d37d0b60a65d46356fb489f5e1299e43d0ca807. 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/JPVI00044560.