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 0x6d6063b67afb55d821972d6e84dda581233bf0930eb7e8553e945d5d8be08c5f. 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/14d99fab-10e4-4094-857d-849fde365b26.json and https://artists.proofprofile.net/proofs/artist/14d99fab-10e4-4094-857d-849fde365b26.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 0x43ccec46b022c8616065352f8f976d1d486e42cec7aa4dccab2ac0643549a25c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ662450432.
Lost Umbrella Phonk - Super Ultra Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa771203fb1a101f9c528bebbdadc813f269b976bfd702d3439af94fafbd308c4. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZZ662450434.
BRODYAGA PHONK x TUKA DONCA (BRAZILIAN PHONK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac167e677c451a0cc91e8cd0cbfb9714c4f321bfaea41bf4b20c9b0db3f393f9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIX2458465.
TRETA DO DJ LORRAN x TUCA DONKA (BRAZILIAN PHONK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36f79fccec1dca34bcd44822a1e0f94b7b307a467858fd39c41600d5dd57c61. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZPJ32416874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55aea978c1652306e99e94da2aec6f31b6b8fba490cf793725a6a4756a0d710. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZPJ32418548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8a341e61152e960a71fbb85669f17871249c817390d77c442a2fa14d4cda34. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZZ7K2430821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c8f97e3628910f0dee5ee28237b911db48772b9242d55a7f3500d4267e2750. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTRX2523483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498e6527d812e479f055838a862ff3ffe984cc417cccb5803e4bbbc5c81e3043. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTRX2523484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c1c7da26a7d8c2c4231ee2a7a7afdf27c5a5632f266ce2abd1321db8dca125. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZK6F2548717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9e715afd664ec8fcea110f88531415388bdeedf0e054caeece706c4897e49b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6F2548718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cfa1fce3450fdb87e49902a02d2fdc3a3555ffb98a052a9f32c67550b598a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6G2538412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2dcc060aa5b2de048a2dbd56ff128685356306a3528fb200f38287f741fd54. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6G2538415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa673de20c167713322e896e9cf3f95cda263a1d58f81fd6f489f527697f47278. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZMEN2560815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467aae2921b58c5786e11d6e6530126a683cedf70cd31794a231da43d3098433. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZMEN2560817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfd25b13ee4b61529c8ac45d165967b0e9492ef6a5060c3c50af47032104888. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GB8KE2515907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16a5cbd2151eb602cefa23bd6eff5c16c6f2a5842fea290eb07196af31f0691. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB8KE2515908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04de99e0468be35653c77582a1d236767a11790a065a6f868784934c364011e3. 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/QZWFF2521964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305514b458d300caf5103594707854215d0f23bf61159798713e55fd93da704. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GB8KE2520549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42fa195ebcf003a32d7d35e04758c367d960a4bbf92ab35272aeb09e71fb946. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GB8KE2520550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2780f5d69e37e7c36921efd8c68cacf26c11dff80bb9acd8f4e4cc120d6940. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA1W2502085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63a8bfd0da137767a3ceeb8e834fb68d45ee480ca43e0185b95d33d43877c2d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/VNA1W2502086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466e5b9f936ba3e64f3987a3ad7638024cf31f2f471c24bd9ae462e34782bebb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VNA1W2502087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f74a3e6dc60643806c2d42e6aeacdf4fddaad0a8a7b30acfa9a4a4c935b027. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNA1W2502088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68780a6e276d7cc41f8eb273bbf2d8d74860a006d147673a710b0fe543f0c63e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NL5UZ2522730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec93e26d79568c03fd7a5897e973464b98d5e24ef3faa9d3e2e3ffd8578ac9b2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT5M42518304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077100fde87ac2c355e335a620e83b31f98f8c72f67fc5dfd05d6a87fc5e300e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GB8KE2525981.