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 0xa2a1fd24105d6b60b7cd1ef060ecd4324e61ed5b7a38487a446ef2137e410814. 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/5ec15206-07f8-4deb-80a9-a5e4a5275388.json and https://artists.proofprofile.net/proofs/artist/5ec15206-07f8-4deb-80a9-a5e4a5275388.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 0x96e45cb66b8149f8f76acfc5477a38548626daf132abd8c65cba703b43a3cdcf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX2831908375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cd5c5821330684e6260c32f41151389cd9f47c154882984324ba769792f790. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:20Z), 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/SE6QE2352445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60ea7c31bf96e63398aa42789bd9b962f68f6fa5f5630f7451135b9f54c7efe. 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/SE6QE2352446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc6973cb566b1b8ff894da79c4d12f010f36a484ed7f84f6cb410ce77fea252. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6QE2352447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e67cd975cd94ad19628a9ef55dc50ba84cb24de7822ccfa9535c405ca8504e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6QE2352448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcaac1e334952c505f7c74e5661195c06a7d7c72bcc7defd6bb48d54e10f180. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6QE2352449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c648d0f619c0b6e0a9d4fbacd51da24b840857dd0e2882bbbab742abb53d5b2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6QE2360125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7435a3c7410d8a111e83b0d1f2aa6e0c08cd94c84cde077a544a1d262bb21b43. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6QE2360126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877ef42b526bd003722b2189e7fe714338d1eccff2de579ff7bcfe08622be1c0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6QE2360128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a35233f47400e720906f50644fa40ce5db59450977c0ff546dafa854de17ca. 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/SE6TI2383172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31768bd1855cc6beea1b3d76589cfac87e0f310e15a579408377dd8620cb9ad. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE6QE2389488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a0ea5d33a3d77b40c42e381dc7e082ec2380e69b8a54a415370afcfb95a566. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6I32476198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a50db8140ac971d3a9448fd3e45be21d2f878bf1b033bf6679e840d2e25cb1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SE6QE2438598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7529803ad4c79d99a4840bc99f9f1ae350336b6b242e24cb3a060c75165fdc. 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/QZNJV2511510.
Olguita / Haciendo el Amor / Nadie (Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a79d8e5dc556ef2ee21c85fef0d88bf31914c1be92466bb1c4e912c9dd5a4a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:31:41Z), 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/QZNJV2511512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbe4cfd1cdebdcedb79604e83ae2cbb4fdd51f2c5b91f1a0f102ba99f2c66e9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJV2511514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817a33019565363bc7eea65f19007f1c1f9182417300e09f18224267e9493342. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:04:47Z), 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/QZNJV2511515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828a4218a281e770fac824a9e819152905cecd95d8c1e8ca8145a5aad9f5f006. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:47Z), 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/QZNJV2511516.