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 0xa133f0a00a8ce8a7c715aeeb9a9e4c4bc8cb48c7c9af93667471156ab4387e79. 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/19904e28-a327-4f36-a2d3-e0f130c10e69.json and https://artists.proofprofile.net/proofs/artist/19904e28-a327-4f36-a2d3-e0f130c10e69.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 0x0ba559fb628cb4d90aeacafeb78474f1f2bbd3658c7885933a4e78e250632100. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUA612022571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99af1466a412cabd4e6cb76b5bf29de42a00edda1eeaa640368316b28fde3f22. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/HUA611402658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b017e949be1cddb0229d12839f31c7717f78f2d0973ee5de4421c5199fcae62. 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/HUA611402664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2209a92c92f144c18ef480560df488c52dc60962a38d9eb7ac4de51057eac512. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/HUA611401857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca11b8b2c51e49d3ea873dbf96fcc8dbb1ee918353dcbb639c785138f138547f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611401859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6ef20e9ab6a8662da1262d6f6fed983430282bdbe2ee3d68cdf699380f67a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611401862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306353a4c55787d789a455a1d33fd41c5da9307d333149640eb5dd9a2106bd1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611401869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9a504f0807d30f4f83d37c1ea0e85bc1e584d9c2b60d70446c60effdb02a0f. 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/HUA611401871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9a837f5cdc99df7c10635579071779ed770d4b9f103df17019215ac0bd957f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/HUA611500798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319bc6f059acde470d05eb7363fd9d4e328e9e32ca62ed4524fe9553fa225770. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/HUA611500799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2669d30bed79eb30bcaab7239988c435a858f0e1623355ec5098a6860af0fd. 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/HUA611500801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76b577e2cbf7d005a630ed79b9eab0b71e40f44e2e5e117f9d2f4aa722e991f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/HUA611500811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700304616d623c80792f77d17f728d872243fc458f6ba0c61f38e8aa0cd00bfb. 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/HUA611500812.
Veteran Újratöltve (Barbárfivérek Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edb578a6202355cc5fb3e99c417052f95be088302d13754ebc4919b5c96e69c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/HUA611502437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f36df09094ce8728f9f7b327121ef8aedd1cf8c3bb7fae7b77dd6e71254d6a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611502441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea0ca837043c6ed2857a056442e75542e1306ef364e58f0e63fb31fe2e5baac. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUA611900929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa7d09792199364b03331a6e6041779d82e6d532d90c4d92dbb6c7eb4203f02. 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/HUA611900931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea68f84172f47b02702ab5a5573fa068706a0977d32c8daac5df2d4ec566cfd. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/HUA611900933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce646d24790028689f2e0b39a5a67f5a91f7dd40c225c8ffbcf8ca6e93b3e377. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/HUA612501555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa6f0ba25ebe2fcf676d482e801345ad5faf9808a3bc230556bd8e32ac73f4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/HUA031500002.
20 Év (Ganxsta Zolee és a Kartel Tribute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa6f0ba25ebe2fcf676d482e801345ad5faf9808a3bc230556bd8e32ac73f4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUA031500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2495b48772e78f92453f8cc7c3bd94a8ae3b92e0dafcca0a0895c58b7ffb30. 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/HUA611600991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20cf7d2fe2900595aa04dedd2f36e37e2e391b0080c80ecd3e8979a3a1377ce. 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/HUA791100386.