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 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 0xa1604fdbb124fb073b47646fda0d6fc1f5eed4060a13d88b320029de6489ada6. 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/690f3ac7-1a36-4294-9c20-f2bf5fb9cec3.json and https://artists.proofprofile.net/proofs/artist/690f3ac7-1a36-4294-9c20-f2bf5fb9cec3.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 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 0x2477a102b699288b5e14afdbd7583d95ca2778e106c03e4686cd13eb9483c8d4. 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/TCADX1849410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ce51317f48523f5d50a0d19725708d7c8332d0dc7c2e1f4a88747d34fbdfa6. 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/TCAEC1924012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb463d8dbad57a30da8f62a6d3ea69b4e9beb65065715aafd59f9400b8bc73eba. 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/USDXS2500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476100b9cfe3694e814f29da5bb44faabf08397c1aee477716399da4387cc6dc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USDXS2500583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54185f1bb0f3540b3549a25e139dbaff1a23044d1e8b0b90ccf362dfc78121bb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USDXS2500584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bab2669a9a433f4251c66e7c931c960563ac6c252a1ebef0773d96a72146a6. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USDXS2500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1287d38be6385fb65a6dfb55f41cdafffdd35256a3f4bf2195c500eed935b4. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USDXS2500586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e86ea01b2897526e86569cccafe16cb4f15a620eb9bde20c4de0eb2f31b6b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USDXS2500589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e618eb19c9d1543d343d557e57d523167905514900255bda1a85dc7093c91f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USDXS2500590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7102dbf3b01e6a7fed6489235d20004d3af0027853adcb87f623b639645135ad. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USDXS2500592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c76687e97ce9cc5846e5cfa135a6a3aaeb09890c5f8b12b448aba3f9c86c48. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USDXS2500994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea18f71d5220945441210afd9eb12f46a5b43ce69214c33ba16b00efb56786b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USDXS2536601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1988e21d8237af1b7460c095e9b6bd8083eb09ed9f01bfca650c9b7e860a11a0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAFN2195597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2af5e1430862c654c9df3368ea5ce707e5db612785059f00a569577606269d3. 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/TCAFN2195797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4388dfa1c2f3f6ea14eba8c61a75a51fd5b5db95be9257eb64b06f2ad20e0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAEP1909934.
Permanent Skarz (feat. G 5aby & Paxquiao)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe8434745d1fc21f4d207768e6b7282e06afadcd199f28b4f015e326d44d8ec. 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/QMRSZ2001824.
Northside Dreams, Southside Nightmares (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e737f9b6d63c73bcb8c891e3001cbe2a576b51f0db2ac56d28ca0bc5c3600f6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USDXS2303468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d037d9d6f83b72902e57f55f3ce283447d00c79d35dc2db27684bb38dd4de21. 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/USDXS2302811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4abf43c0b2861ebdc31d17f1ad119bc9e56721ca36d258bc307ff080abddfa. 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/USDXS2302815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1f00326089c4042e5825fff49a13cdf4467d557b6e57473b4827f3d8b2939. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USDXS2302816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910f23bc5bdf44860d0c792f12aec2ee4d4cec6e05a58176151bcc1b68735f75. 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/USDXS2302813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cae8395bef5fb7a7e90528d67f531f23f461d7ac3a950b9ce9be32c60c9c3f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USDXS2302817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156ee94405215bf329268a2aefabaf9d0673e9f1f75bff6f5d41758fe1b9483. 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/USDXS2302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc886ae5a8a4c968ca2f0366d7ffb4ec40c5aaba639d5d8267a20bbf7a189145. 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/USDXS2302820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e25a610c72d1a9388cca9454772d106b490267b42e1ab307d7987719021146e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USDXS2302821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704cabe99c125b1d0d4cebc371fef31dc381036a577f9cf621f4ab18efb7961e. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USDXS2302822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65906b98c9aa126fcd1e4e632907b4d7c23b25b5a47d52831f64abe1971a29e8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USDXS2302823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d89c40dad28212dd4a1e511e4de64768194e87e972bd3bcacefc39a375a3a3e. 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/USDXS2303469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f176ea0359a0a08c2aadba49881fb0ca4b7e8b7e09c1b8465c7290718b72b. 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/USDXS2303475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d2e4993d9109e6acad09d29fa2a89ff52b7a49e8a65f2fd091635f2c3972ce. 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/USDXS2303290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1872ce886916a67e9aa521411e32909dd935b2be01c307f328524ec2684fd227. 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/USDXS2303294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d037d9d6f83b72902e57f55f3ce283447d00c79d35dc2db27684bb38dd4de21. 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/USDXS2302811.