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 0x78ba7fe1530ae574a6ec35988383205ea9d9faed95232611991f2eec224e6ead. 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/35ea1647-7772-4c4f-948a-edeb503ed3a0.json and https://artists.proofprofile.net/proofs/artist/35ea1647-7772-4c4f-948a-edeb503ed3a0.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 0x2cca9643b57d88694060a58d08e5c951ef7182d5b1341b91e9fbe596fcbb6844. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZFZ62285751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b477fc91b5d92518c33bc29de33c982c3e11c19d4e2b37dce6bf960e0f3153f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ62285756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678e5330f28f8e965a4b38230b9554888bcd893201ef04032a282e8bc12e72b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ62285757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6c7ebb4d78e9ae68317e785ca335002ac48be764c5db78af6019a41bab4e2a. 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/QZTAZ2238190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c66940204161b07fd85f2ba8e9ae5cb0a9d8d1e7262a44d156e4c3680e718a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTAZ2238195.
Murda Music (feat. FSDabender & Mere Pablo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b21986017decbff87d92437f1e8655201c1072ac968329b3a280d8d46a2ee3. 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/QZNWR2363595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0189738835842425dd78e3a1b556afb20393df6559c989ec26df088198c921ef. 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/QZNWR2363599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2af5c04a13596c5d500fa83e24bb48806b1b0c7ae9fe814a1bcf4a8a185f0f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFYX2496280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11410e1d88fe43452950b602f4b1250afd92c315dfeb801d37c8670ffc11ffe6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZFYX2496281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e1cb937eae752ee4e1b7835709d5de3eb8c8043a18e69666d4efa7dfaae74c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNMT2492432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a155409e6d432b047a685d9c8b5c27ec0b3a2b0c1a00130ed6010414e9581. 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/QZNMU2484835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9333ca4a814d5ec71f583b08410214c801645560eddbc70b10a47c3417c4dc35. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USLD91766766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3f6dba05d73b2857ead7b9badbe20297ae77fab5a52e9aceabfdb9f5fd6bae. 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/USLD91768180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359bf89703b43132ab1f6c1a9ba895418659ff09712be6450ba90a8ff308c9dc. 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/USLD91765655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6454cbe6a41a23265ddca71547ca87326802f75522407b3e53c3fdc7e5a1aab. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USLD91768181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569addba5c252c6f774db33efd4ecbe1b96fc2fdd1853d1db527270bed97bfdc. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USLD91768185.
Full Court Press (Outro) [feat. Ybcdul & EEM STACKS]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0d688585876957c68298ec7040a212f75eaac010184fadd6a8613594162d3e. 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/USLD91768188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf230804942411c46b7937c27c8f38214daef24d41b7ca58078289cfef3d85076. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USLD91769567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e646ee7415958bcb605c45658fb246540fe1738ef9ee64f4bf354c99e525205. 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/USLD91770088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61e1701486064d7878cb3143530fc4f347acf18bab6a3228d6e8f640f40abfe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USLD91771844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36826614800dc9ee4d2a259b5a3a084e41ff05b6f7c0f45c496348fdecdddc92. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/USLD91771845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf230804942411c46b7937c27c8f38214daef24d41b7ca58078289cfef3d85076. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USLD91769567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b3db64972514b4c0c20cb37cab145f954751132dbba039d21f436112d6bc7. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/USLD91771850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bd48f1f2c2c5f75eb05cd6edd13dd170db3996b754a0d8e4adfd4bba50d15. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USLD91771851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59479a6f6261452c76de1bc8c319bb11822545ac3707ba91556a0b1db9050160. 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/USLD91771852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22770b939b1f474b243adb331e3db6f8d885764db7e63e990e1d5f6e80dda13. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USLD91775617.
Let's Get It On (feat. P9 & Pablonumba9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece47d59df4348c25de0bf43f0bf1392e710071c927f0ee0e421387c092b761. 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/QZRP42354755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0d0bd6dd4c3ba5b70ca71218520b2c3caee99e5b13c26edbdaeb68fa0bb6da. 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/QZFZ72393233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe126c875f07bef5cedffbb8a1cfda94069bbd6c9600a2bc01657a70fd77e1f4d. 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/QZFZ72393243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180e099e005d849d118aedae6d8c31819f8eb849ec5b027c592fc3a325ebd1ed. 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/QZFZ72393253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a50e64c433c4c3290a3396607c606bb4c930a41d1edc21040da75b065e1a1. 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/QZMEN2205234.