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 0xc74f93da160aaf955a0ad75a6cd72c8912363d7b3ae2093de9614c8a32b713b5. 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/8203b4cc-b251-4e0c-87e4-e5ffd1f0880c.json and https://artists.proofprofile.net/proofs/artist/8203b4cc-b251-4e0c-87e4-e5ffd1f0880c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8908f4de41c49d3bcae4a49c9c1cc503267ffb57e7d1ab92746104b3cc49a930. 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/USASN1002794.
C.P.R. (feat. N.O. the God, Odoub, Scott G, Scheme, Mark Menace, El Toro, Meth Mouth & Crooks Green)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eaecaf6636ccfe57d2e3f8ff0d2addffd06c1783725e9921317c608b5f15d0. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:33:26Z), 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/USASN1002805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb16e0c5596429c9e7be32d2730f4c01d6f43fc4566d13d3aa47d89c0d11757. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:23:47Z), 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/CA5KR1915780.
107th & Atlantic (Family Tree) - Prod. Sentury Status
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cafb0351897af8ae0ad4a5b24ef709bd84ded9f3d7caa1abe5a068b963991b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CA5KR1915782.
Legends Of The Scarface - Prod. Sean Strange
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725ad3c15890f00671bbe1f5898e7e69b98d9caff3c46bcde0d2bbc4440f71f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:31:26Z), 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/CA5KR1915783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3159d3aae9ac8ea41fcb2a5e4fb7aa7ec15f002020125c934b64379701d3ffe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2220548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90862eebab27c1cd6b7010b32b8e78829455bd69c1dc8263a9780392cafa3133. 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/CA5KR2220549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0484a709bf3496c39b88ec7fe505cb2ecf0ac1641d63ca3046d3f5fc716c2085. 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/CA5KR2220550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf3c9907277d999b45cbc3986ae3023ece574c1b9fc30c4629280a0d0f22c1c. 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/CA5KR2220551.
Vial Caps - Trevor Lang Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a01caedde81bba28f56eb8248f52aa417f4e5670b9cbb5283e04c07c8a540. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/CA5KR2220555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ac65ee82e6c504192c949352e332511865588fbec8cf26ba57c11f1d8c534. 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/CA5KR2220556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9a2d6d233172f26c363f7a41a3d3535846558bdb5259a1ca33e0505600b25c. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/CA5KR2220552.
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 0xefbf581a0d3e970468eb653daa770ad077c93e5c5e775f5b0d928e21fa829fbd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CA5KR2220553.
Vial Caps - Snowgoons Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8db8e5d3c6ec787898abb44fb57cd8d0f8ee1953bfa77eda05794fde21cba4. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/CA5KR2220554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d5569fd21846e6d08c0cbb724b633f897f6edebf7c9973112de5eb3aca40da. 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/CA5KR2221782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26396d99bed607e3f46d410b30919e7d7846a65e6586e37c71cb3bf09ffa501. 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/DELJ81622182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c95718886f2c1de2df03a2d44104b591240a0f31c9a5a41a589a9a4cee074e0. 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/DELJ81622180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56b0f6670d3797be7efd8115a3e35543cfd3d5ca001995bc45968fe501ccf4. 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/DELJ81350910.
Reel Wolf: The Underworld - Goon Musick Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f8e65c744076a7dd693771a955c20a9ecb7e110a6392b9a0e4de5114698ec6. 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/DELJ81350927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc8c68e5d9906fda634f5b267ee01f0349f7dc3a788879898b40fb190e16ca8. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEZC62146166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad526cd17debc129c2e1ac7732dacc2c5f6160276b2c3f843aece3ff6189bd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DELJ81913826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4370072e1f76812fa011548fffc35ca966f81bf606047ebb379a7a0734ddb68a. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/DELJ81350918.