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 0xaa16b642c570f2d0b6aa1b92c78c39a7947fe6fe45f6b5396e047fb45c7cd3fa. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/276feb04-4691-4078-897f-03631320886a.json and https://artists.proofprofile.net/proofs/artist/276feb04-4691-4078-897f-03631320886a.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 0x18ff4f06145867a84b8102adf70e1f703c17de398764579852f1c48fa13d576e. 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/TCADF1797274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed017f250e8602b985bb0759493e686f7980a44128949947468629cf885a2c2. 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/TCADF1797276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff649d0c59d2dbae77dccc5e5224eb07fa52dfc020d8e186abf2dd55cc9cc67. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCADF1797280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ed3fc2402164d756042e529fdc47d52bc306cc976136b6e2a8370e22ed3e8. 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/TCADF1797282.
MIX Match (feat. Drugrixh Peso & Hoodrich Pablo Juan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2302837e6d17dd5d3cafca9dc4d5c145180bc748e31d8351f046484fd2fb76a1. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/TCADF1797285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f9089e65f9809b67fb18374283834b5aa8c35c82ab7fc8806be046b85a6422. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/TCADF1797287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960bc8f3b4b2edb524ca5e671e29d3f73b250d8cc812a4583b5ecbea463caa9d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCADF1797288.
Slap Her on the Booty (feat. Drugrixh Peso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a12db0454f4c61bed2e6607b31b1b73abfa3895d94c5d34473bf089955e7f46. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCADF1797298.
Dont Touch Nunn (feat. Hoodrich Pablo Juan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded330209b35043c4204a6bc5a6268c74179e274e176b769b135785922f9a31. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCADF1797299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5d4a39b078647dfd2e93cac8e39825ddd778cd4cb7d9e01de17a9d0668cc05. 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/TCADF1797303.
What You Want (feat. Hoodrixh Pablo Juan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca5ee582715fce6b1ac83f024acefa3c0075e921cf0f03ab164190c03106f55. 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/TCADF1797305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99364751fc04ebcfd57bfcd2127d3e283a8414a7ec3d64298a5dbbb728f513f. 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/USUYG1120761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad5918cea1fb7ee8e1820d01d9eb5f082c29a27aca0faf44a9990ed12b7906b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1120767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32959bedef16bc29b851ac107ff5d54d5aabd449935cdf5efdc969c1112a7801. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USUYG1120769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4deeab8ef9198f85a6c8e47fb4bd34071c30e3daaef39a54403538fcdb5699. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USUYG1120770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18e4aca732a80ad4bb79a6db8af2adc00ce7db1f7b47e4c657850b851ea060c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USUYG1120771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0d29076e21bc88bf627a857e8a8b4a2a62a79b76b3efe9f79ad39e5298b22c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USUYG1120772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe237672b56c9cd11700a753d56752d137041dd71e9fe0400c871697e0f9df3bb. 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/USUYG1120774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b317a5f779b211f0b8aaa7523e425cbba4361647388d1d6230a52c56aceddb4. 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/USUYG1120775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4387d6f8083fd36cc3b81c38b20211f066bd6133f15b0657b6ecc4313d97b51. 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/USUYG1137619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02224d02af2b8d82a0f12014dfba24ca4fbfa5d0cd2ee38fcbe49bb5e4eddbcc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUYG1137620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b4b527cdd8f68493849e105045e98aca8aff0dcf4e2fe47119b406c0536fbb. 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/USUYG1140440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2227d272753ae54667b03f745f33a0880ab65feaf5ece07f316a403c433041. 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/USUYG1136145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a28166f0f08b6a977c8d85f4ae2c58ab4c3f9604b709337a8c02a610bfb6d8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1136148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed87ddf83fdf9baabcb11314661a5b662ecc4f788545908884438cbbe8675a6. 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/USUYG1136152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d44b6c1dcc4a6ebe462c653cd5b1a26160397578146439ab8fb2458c5cd0a7e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USUYG1136154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6d756b35c002d365a5906d89ac965c96de6f4703ed64a29fe304f6c3061bf7. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1108318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2d26f77dd18b8b73708a60e376f6d1bfb66ccb0f2636bf1ae0ffddaaae3c34. 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/USUYG1108320.