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 0x019a62bcfd68c4637b909f5b477b98b98444df26d844d32ceac20463f441558f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74865cc2-c31f-46da-b14b-08d775202a8a.json and https://artists.proofprofile.net/proofs/artist/74865cc2-c31f-46da-b14b-08d775202a8a.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 0x365d9014ed02a1e75246201a3454befc748acc3c6f4a2255621d3566b3f6a6e9. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QM6N21889210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa352f7a97ec829a3a93b92a12936ba8c0e021c8579e6b43c9dade99c969331. 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/QM6N21889218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15260831440dbbab046bba73a8113b8b0b76b64c5bc33e86fa86be62ddcfb56. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM6N21889219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb00d6a913bc00e7c732a11bfc65d767f4b9f95d500332cfca61bf1936a6e6f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N21889288.
The Best of Stack Bundles (The Good Die Young)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0556aa614507d0d0ae38f2ce5dc83f582ef3c3e0289cd20cb4a627abf64486. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM4TW1918061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa352f7a97ec829a3a93b92a12936ba8c0e021c8579e6b43c9dade99c969331. 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/QM6N21889218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb731d65b37167bca901daa96934dc1a1b255c8d6d51713f5ae2b4b8016080. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM4TW1918309.
The Best of Stack Bundles (The Good Die Young) [R.I.P.]
The Best of Stack Bundles (Rip Stack Bundles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81baf79dc259fbdfd8b0b59a2ffbee6c000b0087bdda3c441e09056114770f81. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TW1918503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44197a4bc0d2114b9de7b502fd49da34e6d52bc6db90edeb8dc895ec6e3e4f1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM4TW1918054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f54bd4e3797ee98a91efc5de09f29034bad38bc8b3cf75f27918477db7b7a24. 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/QM4TW1918597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc21cae0837b8d7c468db624a76960b2ba96a57b98bbe03ad05e5ac4e736415. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/QM4TW1918615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7337cf6b88f23be384e76a413da1104c5bd6a72bbb0b4dbd51ff904f2fef64. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW1918616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663abd2f2ba644f53a4e6f59743597608f8b0bdd331851467aabd3c91a881131. 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/QM4TW1918621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0472fcfdf9f205ba2849ab71fa681fc9c180eab07d9e6e7bd70383f2a4b668d6. 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/QM4TX1836899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fa4da0af8cc4a6fce0153beddef356280d4ffe4901f774753ba092d752385. 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/QM4TX1836901.
Library of a Rockstar: Chapter 25 - Signing Bonus
Library of a Rockstar: Chapter 1 - the Early Years
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb710392475d5e7cdff0953230598f5b805cc30696b9f18c314a7e698b4efccd3. 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/QM4TW1918617.
Library of a Rockstar: Chapter 2 - Fnf & S5
Library of a Rockstar: Chapter 3 - Riot Squad, Pt. 1
Library of a Rockstar: Chapter 4 - Mr. Monday Night, Pt. 1
Library of a Rockstar: Chapter 5 - Mr. Monday Night, Pt. 2
Library of a Rockstar: Chapter 6 - Mr. Monday Night, Pt. 3
Library of a Rockstar: Chapter 7 - Raps Makeover
Library of a Rockstar: Chapter 8 - Melo & Lebron
Library of a Rockstar: Chapter 9 - Gorgeous Gangsta
Library of a Rockstar: Chapter 10 - Heartthrob of the Hood
Library of a Rockstar: Chapter 11 - Felony Hour
Library of a Rockstar: Chapter 12 - The Wolves
Library of a Rockstar: Chapter 13 - Back to the Basics
Library of a Rockstar: Chapter 14 - Riots That Gang
Library of a Rockstar: Chapter 15 - Biddin' War
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c279e22278c813802d63623e6acf2d3fa321e756d942ffc451ffda628c709f. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QMFME1927978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15de66b21dda95156b79a87f4bdd7cb3cece979a11cfc164f48c931cd89dcef0. 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/QMFME1927979.
Library of a Rockstar: Chapter 16 - M.O.B. Pt. 1
Library of a Rockstar: Chapter 17 - M.O.B. Pt. 2
Library of a Rockstar: Chapter 18 - Christmas Intermission
Library of a Rockstar: Chapter 19 - Old School Bundz
Library of a Rockstar: Chapter 20 - Features, Pt. 1
Library of a Rockstar: Chapter 21 - Features, Pt. 2
Library of a Rockstar: Chapter 22 - Hip Hop's Savior
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4519b3b0a29cba8bd081a2a20df15ee7bdffd797ea59de85c6c87962682409. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QM4TW2074445.
Library of a Rockstar: Chapter 23 - the Life I Chose
Library of a Rockstar: Chapter 24 - Weatherman
Library of a Rockstar: Chapter 26 - Riot or Diet
Library of a Rockstar: Chapter 27 - All I Have
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038d9c646e9eb874b2c697f9db641a6fdfc111203412968397abd97371037fd2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX2080198.
Library of a Rockstar: Chapter 28 - Icon Salute Me
Library of a Rockstar: Chapter 29 - Pros & Cons
Library of a Rockstar: Chapter 30 - Bonus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e57cec2a3eafca31bd9a454dd082aa5ffc83f61de875d46012ddf891dc6124. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZMEM2488237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928e558336477f05c2412b331b14efaccf6edf9a3c6e1a8566b0c909955e8b9f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNWR2547169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4359508e4903bd367e53c029412345164477eb0ff453d65d43ac1ae917f37f. 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/USUYG1340666.
All Good (feat. Bynoe, Cau2g, and Stack Bundles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b423903bc3e458db016d76e8cfeb1a5af2a9fee1628d8f2a1b46a98c49c8d7. 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/USKO11601567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6081ee3d38a529e0b8f4b8d2b65eb888d460e5d2f3beffe6e18665cc112cdc84. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USKO11501082.
6 Minutes of Death (feat. Jae Millz & Stack Bundles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c535a9965fec17514bef13d3833142f01c2b7f06193c8961b09f7cdc9080d. 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/USM5S0800367.
Freestyle (feat. Stack Bundles & A-Team)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d814df1db9a8228bf75194549e3d62ff93784ad99104eec904b740afc1b63. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USM5S0800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6586a2ac444cc1bcd6c0933395e83b82b2d1267bdf959e0dd84c541e8b44e206. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USAE81051748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864661eebca166107fbe076fa7a34bb4be9fc3ffaefc23a36e54a80f0ad68fab. 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/USI4R1225253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561c6d6d9ce165d34ade425d0108353f031a9d0fd1c0e06d6453ae683986fd3a. 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/USI4R1225254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68351f8595dfa615286d082116241ee903abedee0d6f64e06b33b748a486d09. 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/USI4R1225256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca46e13a32ca4768f7dea8862794bae4a127214cc9194ba49efdb7fb614ab73. 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/USI4R1225257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9412c620adbbc9604c8cf5fe62d1753b6fd2cfaca82df66f1774204e86f17782. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USI4R1225259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21517a556f962d27d1261a65846b8d526dbc887d9eda1d85748f1345e90e7c1f. 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/USI4R1225261.