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 0xae0bd8e410f18463e48d44653ef8d60c37c7620d3b19b6a6005c90f26b27cf1c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2d8b5cf-c72c-4dd8-b57a-9a8f6c2644b1.json and https://artists.proofprofile.net/proofs/artist/a2d8b5cf-c72c-4dd8-b57a-9a8f6c2644b1.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 0x849cf8efdce4ff72dec7d275d7f55c7e792ac47f8071cb8db7ea61c3127b681e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USUYG1719661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e48c6aefebfbd53fb89a59027f23d1fa77f0a882a38efcc05ab2330ba3fffe0. 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/USUYG1719662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa174236f3ba596bde7d779dccc9f540ad4a60686884a4cec797215dad217849c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USUYG1719679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a7ffd3b92b25d303a51ad7844a17179f6026ea6e0075535e8e38b798ee1766. 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/USUYG1719681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb309bfb7fb1910fce1d4e82c8161b50eee1585cce2f60554cd81af4b7fd4dd8e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USUYG1719682.
It's My Job (feat. Number 2, MISTAH F.A.B. & Headkrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3050e5fac609d3f34cccdf3dbd917e59dcb8b9d98ad047635b71bb2d006344. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USUYG1719684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f353b63fac78ee262d7e9cc4f22a9d89558e12f2113c1703a2a8e4cf84e98a5. 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/USUYG1719685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8584f2ef85da224db9ca1f31a3e5552b9b5d98d380910f346f4dd65ed3b98f80. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USUYG1719686.
Stay Ignorant (feat. Talib Kweli, StaHHr, Senor Kaos & Number 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3444afb8b32ab05d5bef84d681dedd2002b11ba0a2e01e7753f3591f51aeddbc. 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/USUYG1719703.
Say Hello (feat. Legendary Baller & Big Gipp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a60d07a63565f0e9dcaf33ade80540e6fcda3345bd48e9de1f51839ad8092c2. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USUYG1719706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578f147fbe4aff447955728523d9e00f455d6aedc4151b3ecf795ab53d96faad. 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/USUYG1719707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55664d7ec99dc3df66ba4df6a878dd070e4b6005f2acc57b8ed9097a4660e84. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USUYG1719709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9860e33e9d301139cf8e8b961d9eaa65c3b19a40b2176cef7fa36792b16a44. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USUYG1719710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ed9b3801fc115e8619a565fabfe79ddefe0fefaefd1d92150446d9c686c31d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USUYG1719711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732a22ab802a37f1a485dd14b42f0e58663ce390bf7f8d1d2bfeec43cfe5c00e. 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/USUYG1719713.
Hard 2 Quit The Rhyme (feat. J-Live, Senor Kaos & Anthony David)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea253728906c4b4a77996bad0bc9246cc214869184d9bd43521bf55433b024. 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/USUYG1719714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3096599266b452d1dd756f1b378fc0f33c42454f67b79a55422dc00cc35d72e9. 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/USUYG1719715.
White Jesus (feat. Planet Asia, Senor Kaos, Mike Sick & Z. Rich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110ba68aec60fcc70a0a74003f906c804688b6eb83166527fdda150721e71525. 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/USUYG1719716.
All About What (feat. Sean Price & Number 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6801cc3004b6ce8f75b1e1132d2ddc56e1f3aaec8d440061c64254d53e1da35. 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/USUYG1719717.
Fresh A$$ Tracksuit (feat. Mickey Factz, Boog Brown & J.Reu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bcdee17e4d7ac17173415129a0c908c12b63ded0251d50e0f11ac86b94d1e2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USUYG1719725.