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 0xe505ad12cc7f53c8978f336973d67fd37f4aee7d3f462ed154e067ebb8c540f2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf70bf7d-25a5-4c26-b648-013c9518093b.json and https://artists.proofprofile.net/proofs/artist/cf70bf7d-25a5-4c26-b648-013c9518093b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bay Area Playas 2: Raining Ice in the Bay
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 0x2f678b82a7670873679963dc010f5edc89046878c39a19d4d305015387d9c4ed. 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/USBAE1306078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9066da8c4ae488c7d6cba63ef39ff6657f7d112fc4e7379f1e960d9dfca4b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USBAE1306065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adef6a9fd10023526d1fc0c45eae45eec8eaf8139b85515ac32026575995ae7. 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/USBAE1306080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed24da90c8f3bc7adadc6b4114bc3b5c515a782c200267beb98ee25d6e0aa8a2. 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/USBAE1306066.
Gettin' High as F*ck (feat. Suge & Otis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243495eefa8d591bafb2e0b4e7b99076902e4436b805ffc5fd4ad34ec3b5b99e. 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/USBAE1306067.
M Dash One (feat. Chunk, Papoose & Kaos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd2cef80878c7946a09d35c86c00a8a30c6442071893509f7363858f3b2aac8. 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/USBAE1306083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d64156f85f9b606731f0499aae2bc8ac401ec93fca23988311624a976cb28. 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/USBAE1306085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcf789dff70a91102eeb8102a469b5b9d26eddfce28b369adf76ff289d1c801. 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/USBAE1306071.
Everyday (feat. T. Lowe, Toe the Tagger & Mally Mal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641761a1b45321925362c0a7c9aa5ddc4ac3ef4e781a8c6d59d73842ed41bb5. 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/USBAE1306088.
Critical Criminals (feat. Nutty & Killa Tay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966da62c72e406b8e666ca439d201a7d850cd17580a1600962cda831a8fd3cd1. 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/USBAE1306077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd77847c0f6b4a5ea4672f897cabcf0a85ee3c798c4db660cd9112a1bc16540. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USBAE1306064.
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 0x49bbdd969643770a390d6677bb457ead852e8b24dda15f9ac83e325617c7881c. 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/USBAE1306079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bf292b6577a03cf55352e2316086c73fca04caec87f423d7efb0f4a9062f1c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USBAE1306082.
1,2,3 I'm a Gee (feat. Master P, Silk, Big Ed & King George)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22909f58f9e7101152e6c21638c2f3bbfdf63f6b37e28cbc399f7000ca9018ce. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USBAE1306084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ce81a60b01ccb165a1e6e54c1f8d4e763278ce077b7799dbf68a4123e3f6fb. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USBAE1306070.
Ready Made N*ggas (feat. Black C & Spice 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbba221883c18b858efbe13ae11683641c9a0da71e58488220bc0709760841b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USBAE1306072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0fb9fc26a0372d8db9893db253ec9048fadf395267a39d724830d832c7d6af. 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/USV351362190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca0e0d1cb579bf96ca3f6667a175a23c8140a9e4d96f2454592bf3bc8adde2e. 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/USV351362191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835f46f345cff930ed51debaafe071f719c56a3c294ae70b6871547e2d09495d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USV351362193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b5b464c47e8d9e39c79a208ade7f8a4b309197d44c7715e06c045e4bffbe41. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USV351362194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e74c8a5b27fe122b8d52270ef5e8bb56d468760dbb757057d0264ba2927230c. 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/USV351362195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda647aabba0efc459933ae74936122c9c15a6cfe2e5bef3a389165922b55541a. 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/USV351362196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8fbf2475c6e86f4a2ee00590540568751aac42e3535977f0e58f0e2e5b0eae. 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/USV351362198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0160ab243a3cfc17e188c8e76feb4fb2ec09a9c55f5470a83bd1ead173f200. 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/USV351362202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24cffec468687d742d0dbbd6a95168cff4234601cfa0e4ec9888d499e1897df. 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/USV351362204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81a0b38b43e3eb8900b7276822b4705533d22b0955d2577c6f0c75c386855ea. 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/USV351362205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b14bfb069e46d9418213a0dcbb7f77bf2cb13232522557d057f657b27acc2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV351362206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68049203748987d36407f3f9d69849fe3d56134d2ba62a26cb33353f42b26aa. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USV351362192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7c66a380181f75e6de00c61d6be72e4d5cd75056b30e78cba8e22eb2054f70. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USV351362197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52cbbad3dd32c3727af69d4c16e71d793cd179c5f8577628a7eace9cb6da962. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USV351362200.