Ward 21 are a group of dancehall musicians and producers from Kingston, Jamaica, named after the psychiatric ward at the University Hospital of the West Indies in Kingston.BBC - Urban Review - Ward 21
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 0x6695db472c40632723e1c6260e40de166c679e81491b7cd3b21d0915cac4ed63. 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/19d7ba57-9fa9-4ebf-9af9-a2b0c1f03c13.json and https://artists.proofprofile.net/proofs/artist/19d7ba57-9fa9-4ebf-9af9-a2b0c1f03c13.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 0x7216cb7996bc78098c043d2a0febb8e97b8530111cddec34736cda4b5e479db2. 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/QZK6N1940771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80680c7931908bb9521b18ad5b1162f56237f384453e737544b8208d728dc93. 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/DEZ651604111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf133d70cdfe949a9155b9ed28808d03da3c07b851a113aa00d3338017af0e. 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/DEZ651604113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697cf7cc99fbeb88287e90560db3cbb1f0b8a82c24bc236217589f73cebceb28. 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/DEZ651604114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33746fc80f1713f0f4b03813e6cccf615df56f13d843e4fbcd32d9297d82ab18. 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/DEZ651604116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f90cc6a6a736d543a5d37c4701173c97ec3a52a99c872dc16c2d9af33971810. 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/DELH11102878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994f885df3fbc5e1341b1b7acdc5dc495444b834ce1d93143049008c6fbbca33. 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/DELH11102882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d733fc7fbb945c7701682264e2b79db968e6a6a8879d7810fa9fb180a3d6896. 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/GBBZV0301600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03205498349c985f7ec909d00496cf44e06756ebc19a2c0f242f0e23ed3f082a. 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/GBBZV0215828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e05e4e371f02e447e3c51a4c068e3890ae38b61534a2344073317a27c20c9b. 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/GBBZV0321661.
Bedroom Bully (feat. Red Dragon & Robin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1199af33fc4693ddc24e73ec7353c6a567b6c90126f6f7da3c75e7ebc638d5. 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/GBBZV0341021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd150077a7dfbbdb97fefae00228ad315e828ac7227610ce09e73dcc848b335. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:00:30Z), 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/DGA082453044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9be2afd5adbe9e87b4bd35cba0d3018aa2846a7d95b2da4532241607eb0263. 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/QZPYN2468493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b038fc2e111a742a04f484cc947b44aa5ec2b209aee9ec7a4b8c474184a05e. 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/QM4TX2458311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d3495d87bb917ae70ee0e84b10f6030a447281c75dc46a7de1b447e74bbf41. 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/QZPYN2111097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a12de0ee6ab400ee1b58e56cd1d0d92ddbc2eeef0e6a678ec5b735bff06b7a. 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/GB5E32000318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef112b3425d9afc89c63f28737bea9c1a1cc5e57dbf536ecac1e93d84722ee4. 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/TCAES2051660.
Ben Yuh Back (feat. Sean Paul) [Binnie Smalls Remix] - Single
Ben Yuh Back (feat. Sean Paul) [Binnie Smalls Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6b5f459857183397a1a19a325714df3c8b71a8e0b2ba063b75bbea1cd27c5e. 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/JMA271701762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b5ccc65abccb22cc1fe2431d82fe06af5ae8cac8c7d7b4f146ca1dc3f19291. 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/DEZ651609792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf133d70cdfe949a9155b9ed28808d03da3c07b851a113aa00d3338017af0e. 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/DEZ651604113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3f19a80c77bcc18c0df009ac14efeaf537e69a650e3db46e186eb84527f753. 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/USDPK1400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246bc6652fbfcfcb675365e0105a2ec1a044ce953748fc828ce4b19b9fd867f. 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/USDPK1400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c6317375773f6270f33748db6cb1c67e58a74e44cc9777b89f851ab777b71. 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/USDPK1400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaacacfe9364430ae3f95e313991fe04b8345b4c0c0298ffdb571b1569434581. 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/USDPK1400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2011d46cfdc54602d8b4203b6e3c29b126ec05aed4f07ce4e4accec91e1834e. 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/USDPK1400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac720f7dd0bd9e2af68fa036fae5a4b7cab1df3a4d4ef05ddd9ad0c7f3c13b. 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/USDPK1400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35029d0c7e0bd11f3d647c4b0e426dc8a6a9329b25c83ade3ae94ead18f63f45. 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/USDPK1400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3d53281247e13403fa367065fb8da592b2dfb46a0f5470c6e11ebe3d6348e7. 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/USDPK1400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f4bc6018911c16e4370ddf7f71babedd66197d4a2f6004b0cf1d3ea9f7160f. 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/USDPK1400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96a04017ee955e29b9c0ad618061dc4659f10ecf3f0d164de0a7585859f8353. 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/USDPK1400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3efc5a4a96c3dcf397c7b167e2bf07a6af7b830f61c85ddb0b4715662aae3. 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/USDPK1400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1712e1c1f18b4b0448fd2faa4c96d92fc4d693d99dc73b83a962ba86cc176472. 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/QZW9K2457488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c59762206458295331c75452ab36bdc888f62f3dd239e99bafe9dc2694dadd5. 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/USA560734124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952798a3596cc2eeb60416f1ce3eb4c4be94551e060922ac242815e7c2669a82. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR2X41946625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7216cb7996bc78098c043d2a0febb8e97b8530111cddec34736cda4b5e479db2. 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/QZK6N1940771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73b81a0c833c50a0c6ecfbe7518f1de83243ed59d84d7fa66553319f6950bea. 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/US38W1229213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c311bee75eebd2141be72a7d09593c4c9f6ebdc9677ab234658f927c286f6f. 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/CH6541873241.