Fat Boys were an American hip-hop trio from Brooklyn, New York, who emerged in the early 1980s. The group was briefly known originally as the Disco 3 and were composed of Mark "Prince Markie Dee" Mora
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 0x2e31eecd98e30fc3c0a055716a5267e754c200de37199776d96f1504896c13a1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac47d1d3-7e97-42c5-9ad0-69445c6fcb3f.json and https://artists.proofprofile.net/proofs/artist/ac47d1d3-7e97-42c5-9ad0-69445c6fcb3f.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 0x6ed9a47e5c64a93f1d8608d41b0e0762bf0d75f9cbf96f34ad8a92f2e39752cf. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USQY51094866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0232ff441ec0c50e9c0202b0adb69b30f5be07a40ce06e9578655b20b6ca75. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USQY51094870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c8ea3b296aa8e5ae227d2de732ad5ec0f2fe86aafbc6064e1bc08a78df5e1b. 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/USQY51094871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2029f5c34b11a36bafc83a25c0e5470184ca38fb820d940fc5ac3a35b2cf2f2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USQY51094873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d47ef9ab8d3dc66495df9988858d200d8f2efce0945180c8486804475b962c1. 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/USQY51094874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff66a1ca10d23d13e204d01d448778e271cb525baee0b070983c64d55bea031e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USQY51094877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5ec211eb62d7d99c67b07a2e329c22b97e028392be00bd8c86b48602d6b19. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USQY51094879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3687f675f110ad0d3cee370b30bcdeafaa5761e78297a9d2cbe8db9e30adfc. 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/USQY51094882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2b2d633316e24cad0602fe8136cf52dff31e7f146544d9b604c526a432018e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:49:30Z), 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/USQY51094883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8854bddf437ff239334caa4b76e248123734624110fe1b79ed107969013070. 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/USQY51094884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecf81899a012e6f775a55776134dad63a2c2c1781ff73754413333941ae6f9e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:34:28Z), 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/USQY51094885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c566ab4d9fef0701336934aa10c87320d38c4810661fb68d9e21c67d0f8efb. 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/USUM72103470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e80ee938edd95ea9f775350b7742a17bcf7bf9c886db2c162f5c627ab26451. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USUM72103471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2057fc27dbdc9cdd4200864449ca2a92cf7c40271c654ff506dfa261404d63fe. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USUM72103473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01437648aceaf5d0fe98ee4e3faf08e01a5c31ca147ded333ece5c070a0d144c. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:52Z), 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/USUM72103485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07c60f885ec9de2a87896a4611d9d30a3efb42a5e588a83f075e6e97bc3b4f8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USF068827620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc55fe824b88df7206321c60a5996daf870fd42762dcead0c79d963bbeef078. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USUM72103620.
All Meat No Filler: The Best of Fat Boys
Human Beat Box (Re-Recorded) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd260961bde78c998a05d105583004e026ca48625a63766505fa761a51a413650. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:45:04Z), 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/USA561418655.
Human Beat Box (Re-Recorded / Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9758f9b4b1aabfe76b0999a50e842aceefa744fc821e5adc8f6f889c42dc4b. 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/USA560949499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66acef348afeae1689203a2159db53b2e13d608d3b473525817c60c890c1c4e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA560949501.
...And You Don't Stop - A Celebration of 50 Years of Hip Hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1bac19ff136fd443f0cc4d98e7da52e9849428b7b6f34d0d618651648313f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USTB12300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb9a84d3b4cdd33647ea56bdc9d9de00a107998b8e8998e755d3353159d8a4d. 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/USA370958964.