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 0xa1c1dfdd1765975aa93d2192fb8a6fdbdd713f61afefcb0d4681d9b2ffb8ffd7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92194664-b843-48f4-8d7f-42f15f98403d.json and https://artists.proofprofile.net/proofs/artist/92194664-b843-48f4-8d7f-42f15f98403d.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 0x3daaece0fab06bfd70d08b379e8affc1cfc1c0ed3783d6c813e783427fc7d39f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT29500936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434d3783cdcebebf4428f9f50c0bf1b2a4476fea414ebd2137446071ac2ab4e. 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/USAT29500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87037ac6628397eab1050ad1a02244b5164aa8df13f28211bce648f06c95a204. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT29500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303412faf6d37d799e7a1ef282e5c256a137cef9349f4cfc1ac73f6339e85c44. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT29500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58c71f48933608e5d8e77ed58b2a6e82029695f293957065589a0b9df00a1e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT29500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff824a548cd8f03a40e748880efb698e489bb5a047cad79adef06d4e65788d4d. 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/USAT29500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a080f51f6a6145570ea7b208bf49b0c231174a3a7464f0a4829f9fa385b854. 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/USAT29500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f4da2d653b4f0ed6e155a717abde0a404e570da99eb51354c14277d00afba. 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/USAT29500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292110a43afe2b50bc1c3ec19ba6dc693825fcd86dbef06cdc2c1c9326a25772. 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/USAT29500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6a6ab31716476abc2df348ed09e43b7fe63d894fb5257638086a4a191ff99d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT29500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9477a38ca7ec01f292692553708c39d92ee9eb1cef5a0b32f36b316d3b8a861. 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/USAT29500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd2dc4163c90449cc069a5e0ce9e21ac1087902a816dbee91a7597fb64d7eac. 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/USAT20002050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557386e01bbecc71667e29339724c61c99fca2333a1907db4ff27d928bf4602f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20002051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e40cb4e2cb99edf9637f3b02c7924a59320dce1e8b1f32f5a7113eaabf97ab. 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/USAT20002052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45fbf136a691ea246bc2be1bba7aef4b752b90e45618fd945d352e8d16d4daf. 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/USAT20002053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd33d0e150c89d2276eeae7aee3e7a9b761939387a03e9db8053db258742745. 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/USAT20002054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7af6aa01be6652298cc90183da9648154e9cdcc90ecd3439360cda977512f0. 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/USAT20002055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf235adb539ed500ff6f8100c9737bb83353ae8bc0d589095ecca1daa9026b8f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20002056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d33e9bf81730909df92d29ccddf21ed96e7914d61814c89011bebc1c1b5e4ec. 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/USAT20002057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40f92509d11a3d48471c9ddffd9539722220cc7c371d524eb37ad7da03283e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20002058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58825c1781b03932c0b549903046a9066ffff058614d15bae20f15b4f2d20e8a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20002059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde0ece39b126ae397bee2a003f4eb8817a5a62be891c0c14d82958ed4b59de4. 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/USAT20002060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa501770ed278f6d687a024003c7136d90fdacdb83e5b4c512ef0d1f947a10e3e. 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/USAT20002061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c8b57c202102765682e141c8823c096452e5f30a30b3b7889e99f824800d3. 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/USAT20002062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9688ef230a7b98edddfddf01dcda0141988014bfeb88939de93a00bda28a7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20002063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8419ddb0592b420f41de907243722165e52da78be7054508b1923faf018721. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USAT20002064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d10da7874965176da8f38b38d7cd3a6708e6634393ab61554bbfbd33de48a. 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/USAT20002065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab31a3adff9c80e5dbe23fe686bfac03a5a8aca6b344d71e90a7df7e4344bbd. 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/USAT20002066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c73bb3bc8df82850f693fc116a368ad1ad2948d7b3135e2cfc1546f26ab2e0. 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/USAT20100274.