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 0xf1a6c517b73e299e90a9a6316156ba8006d1075ff7cf3b5aea59aa62e2258828. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cd5c0d5-dbf9-402b-89af-aff78e475462.json and https://artists.proofprofile.net/proofs/artist/4cd5c0d5-dbf9-402b-89af-aff78e475462.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 0x5104e083b96515ba376bc312e3569d3b7a6170e978146f8d335ddc7fda254220. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:31Z), 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/QZGWX2248091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167b6ea4639e01e114af3648b6b62b02f7ba31f7d14e0f635d56580ba99857d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPJ32158158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2822919ac5247cf03b08e1aa8abdfad7e868702ed16411487e7df83bc0d9894. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPJ32158160.
Titanio y Sus Amigos Presenta a Veloz de la Sierra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e572bb6a8c2e6118d7bf6ddf83ffd2ff75304d9aec85b18a6d501d1a00408e. 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/MX4971533384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecc2071cea1c4bfa0d807e13ad8f2815b6c13ac09229bf9880ba3e48b6b8248. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USL4Q1760411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a26162ab97d9ce9b290e67c7c0b34386b5c38bd1da5be13a5f35a920f7ad60. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:34:53Z), 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/MX4971533389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf984ce881b5875ea1496552921e4a6e8e3647ab7cdf6968ba0d56a788ffec7dd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE5752233791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eca633b25f1ec146432f67f67492842845b1d3051c2786c5110f2e87e613194. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/SE5752233797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2f2496142caa8f5b50168530eaa811369628d2d40d4d73b5bfff50fb3ce540. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZPJ32155209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6569ea61030837d8563c73eb05c98709b9b69d9f3dacde22ea447099e118088d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZPJ32155210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aa7f0c9a1f512c2884e5a5a20670bcef4a6ff97505e62b5cd568a3ed739ce9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPJ32155213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8ad44551e16c1a74760c7a495deac2b523b3c50fe7cdf4b41a9f1d082e8816. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:11Z), 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/QZPJ32155215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f4c6c6cf62e492842e3338e773d212440c76f0b8d9cbba1524bd90c2ebc2ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPJ32155216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4427cbba0a78cfd26554b09e03cea5c19e34d5421a00559a8d7e18ce2f844d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZPJ32155217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba3910d28dd33824e6bb5b7bdfd59ff26aeeedead8172862073bee7b2ebe231. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZPJ32155218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae648a2b003f2beebde79ffd5d23481acf09878f8236f44e7c9beb12e72da0a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPJ32155219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bab0d3c43610e5d2ba84cacacb0eabddeff6daf723fd4d342511db564c5f98. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:16Z), 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/QZPJ32175975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353db120bd4cd41e2fc4b802cb170264398f85ad18e6c47579459bfea447dc69. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZPJ32175976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89fc51d96d26680f44a6a19e13020c7e44b62c305c0363e19113100db784a8a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:21:24Z), 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/QZPJ32175979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137805eedc45c0171c7e597e0cba873d1d71de5ed920705300a2763279e2fdf3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZPJ32175981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9187263fc35d74c662ae2f38eb0c039419802db800d1cc54c05104a2d15d777. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPJ32175985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1ce37b6689cf124c98d84a320c1837a40da7683feeaa2fa926bd3b739b69a6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:52:25Z), 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/QZPJ32176007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7483c77d58e5b7712494b0b20916d102a09050176d6368854d09fa521ec90618. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6SA2398961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b15bb1ce22081dd8e6c67ace240c0c2b321a36090587d3139ff9beb3c474fe. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:30Z), 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/QZPJ32272582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db46ea821b824d29dc407aedb597279560407a5a343c9007a009cebda4b141c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:37Z), 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/QZPJ32272583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038677f31df4aa1e20db88a64c148b2737aa6161c503ace9d109e50dfede69fc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPJ32272584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cef60d525d25f398f7a7b592e511da5ccc964d483202de2f0fe22543329961. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPJ32272585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221233e42f78a2227422e6d5e657b92658fb88d1e878b13580dce068a717a05b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPJ32295840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53e053efc2ded2a7eeaa9561722af1ee06b196c9cf46a15b7c67aa0463dd0f0. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:35:21Z), 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/QZPJ32437255.