Plan B most commonly refers to: Contingency plan, a plan devised for an outcome other than in the expected plan. Plan B, a brand name of levonorgestrel, an emergency birth control drug Plan B may a
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 0x1724fe71b46edc8b1b67e33819afea091bc777928bbe254f8e40303493587791. 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/64eb5295-e23c-490a-af49-a3498527de65.json and https://artists.proofprofile.net/proofs/artist/64eb5295-e23c-490a-af49-a3498527de65.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 0xeec716485a43ddf6e37401cdce0ef52063da8bcb03b8cbb9b51316923c8dbd00. 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/USB271000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa422a6af250821340b9e6b000783a0363da824a6bce62f69196e1d4813036f89. 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/USB271010150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858e85b63fb6ff6676eeb2415445be3d270b4d6c48eb85faa730f5d499ab4f98. 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/USB271010151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345270cdbbe8854b50c9564dcc086798a2f5ebacd2afa3040d60191d160e1957. 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/USB271010152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2494b424d70e4a72825061ceb27801322d219bf1a38d9ec9ec18362570b5e0b. 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/USB271010153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd7154d60bb16323c90dcbf1dd3f702b92f13ce3e63d0846d4ec1b2c7239718. 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/USB271010154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb399e9ef63e1356a356dc39c75744ee508e7950d6a20dc8956cffc572360784b. 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/USB271010155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d40385460f68306dfe475375ae3355e96fc781ca86455db1e23c0fc36adf30. 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/USB271010156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37254e8a8d7bc73dbcdb18f5839f3d7878061630ac187bbc9b1fc22f60c3dcde. 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/USB271010157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187f38f26cc86a300bde6937337e87a9ee31664582bba14c16e6858a8306b079. 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/USB271010158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e46af2acf081d0a2ded3b535f1fc8b8b6c9796e80754a25a91711f2ecc750b. 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/USB271010159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63e2c34fcb0912ddadbb6f9991af721799292fcdcf592bd62ca66de63d1157. 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/USB271010160.
Mis Canciones Hablan de Sexo (feat. J King & Maximan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1bb22924eefe162b49856d7760b61289622cdecd33704480fcb1ce6cd616a9. 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/USB271010161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e56083037bd8f1d95a2121ce90b59112a46a727509cfa064b1651003590d8. 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/USB271010162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb369b5d230b75c262c77f50e39745699867ce4ccebaf0dce83056d189546fc1. 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/USB271010163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f8c7faeb434150f9da777403c2f8b611f5d042db960056ea84aeb56aa7c82e. 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/USB271010164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c619239936335c738c3746def1a74da2b8f03d2f0943227f5fb57035a2c2a3. 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/US2BU1600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce648bb1580d2528f0199f49409d478c33896db5a44de3f768aa9a65a4aa283. 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/USB271300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89777d2ee77b9fbfff02bc7ed55e54d4918686d51496ce77c96f6026d22d4792. 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/USB271311099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3157ebc2c0f0829b9d0bb4eaed6bb1e4340e752b5a438990c4d5d573cdb2af0. 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/USB271400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eca7d0f8940598286ae1a131faae7c1770c542a7202ae2d1242423cc44cf11b. 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/USTC00985740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f33237f090ef85a4fb3ed20625854c03a6619581def77be2469ca4f6d42b62. 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/FR59R2296272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5c764af914b1e63652f7ea0e1ad186faebd40b61b55bcefe5813250404271e. 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/US3B90600039.
Caseria de Nenotas (feat. Plan B, Daddy Yankee, Tito El Bambino & Pusho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebe2c51dfbbd827d6dd4afc0f888528f6d84f299214b9a23e4b4d67e044152b. 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/USCSX1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d7f0f7d07b7c6cd4e373941422683ecf68a5ee59dd37cce93414c04802a6a3. 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/USAEU0600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728cf308d9d3704dc4539fea85ab631c434ea4b528fa48e25ee9016d1a7cec7. 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/USCSX1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87edc658a2ff3624dd28f9a26422c807a7dc539b296d3c9c32b862539be41b0d. 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/QMDA61876467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1dd2236854c2615d640281944de7926baca7052fdadd089fe4f556d358e61c. 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/USSD11500098.
Caceria de Nenotas (feat. Plan B, Daddy Yankee, Tito El Bambino & Pusho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd7edd9cd87f7c5fb4c1fc529a7e1aa614564f6be173017af52ac59f6e22163. 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/USCGJ1609890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf37090520cbca2acd0416da2cf2a99a50848f011fa228fa369470b6dbb906. 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/ESA012281013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34b993a0df3024dd676ea3412b9b9b868b67c51d549aaefc487e517758d1810. 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/USCGH1469792.