Twennynine, also known as Twennynine with Lenny White, was an American R&B band founded in 1979. Overview Twennynine was founded by jazz fusion drummer Lenny White in 1979 after he left Return to Fo
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 0x327947b52772855d1be449f96af7a02e83b7fe69ce3c87d957efe54d02c0b537. 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/59ad4267-85e7-4d3b-85a7-7ef0ebe55981.json and https://artists.proofprofile.net/proofs/artist/59ad4267-85e7-4d3b-85a7-7ef0ebe55981.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 0x752de84a4e03b91b72b168f5c3d8916caae2a3cf4c033e09d128047f2166a0c9. 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/USEE10701666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719786a816a6f5fdc47fc0eb008fd62298ed1d3e1494d25f2db7f6a14629ccf7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USEE10701668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e46aede01303cbdb5ace766b2a8a52ae5006966cfc40e5898a1292d7d8c7a9. 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/USEE10701670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5170045f8383589a56c534dd450476d439f479f08f8411f9d9f8a3dd8aa3f0d9. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USEE10701672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08606f4874b1d2f5c44419322c64ce8805061f5fd671fcbebfd509d14d532b0a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USEE10701673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f43039dd117c326f9514377d6d244a904e40ef17edec5b5c4181e288826b9. 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/USEE10701675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384461b6d4a831154c2f1b6822d9762500cb3510129d97cc73133dc01f495b00. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USEE10701667.
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 0x38cc847cd73679ec2c12d3789a24e8abf9af6789fb95f0fcfaee05733939af1b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USEE10701669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1d431240b740bdf12da274bb5191e4a73006a042d5f52ca2924a7baf145d97. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USEE10701671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b045b7eb7c9bfd41259b6c75b5b94327efc121bf6f8ddf4c73b48266a0b713. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USEE10701674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6e79f2d48bac9f24a59b1536bfd9e3d5b58a995322019c92a6e463e9d4f20. 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/USEE10503835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2ea86d4574e835095e3b196325f34015edec308bf18d402cf8bddb2229bcd. 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/USEE10503836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc4e9b3fd2a8b53d3dbd7eaa912c9a5a0dd8c8050545081b9403c83022ea6c2. 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/USEE10503837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c3fb1d2656092073cdda90703add8418c21337356d19638e8686f9c2b2864. 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/USEE10503841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec134fb51abe825c07d16c1aea97311f158fc854e5ad7e0d95615ea71514762e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USEE10414083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a89a37b13015e3ebb3796fedc785932bd5e80a3b077c676b9fb574d1b40fb0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USEE10503838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f83cbd6530e36c076cf2e6cd78885e5e113ef59717df5acf4ad0f81d4bc5e7a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USEE10503839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0682ae8bcf2aa457218bee99abf28b6865abeb72d2fa7cf9a94d8520b31d2d7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USEE10503842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7f39d03a419308b12d6d6c0f12bcbe26029ee4e5effa7c802a9e493ee8a175. 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/USEE10701629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08ef29c69fb7912c9a3bad918255238abe2ae60d0003d55e5c3a5039a1fd0f1. 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/USEE10701630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c0f4f9a11952852dcf4cf91523d7916a4d556bac2105ec06ba836eb75089ea. 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/USEE10701632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fff233f83e18b8df1fef8bf1dd7700c8af9949277b938cbca31e8f493f9f6f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USEE10701633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9484ac7a734675ae65293583b319d3a6f5076642ea16583e66684aaf1d41ea10. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USEE10701631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c223afd399aa7d6427866c0cf083c1d0c99818b6c465f644d363458556b8ee. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USEE10701627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a378fcc4b8e0b9be5af0955c47a8d313be00f4dd4f69568899b52517d351f6c. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USEE10701628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404b6ff60bef0e1c51238bb98be11802a468b7448aa46fe9ab2fa22f69bc4e9a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USEE10701634.