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 0xdda8281952126778f1212ec0f6041a3e4c47e9073d5c269bd5762defd644ea5f. 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/f561e8f3-97fe-4c42-825f-9211457905cd.json and https://artists.proofprofile.net/proofs/artist/f561e8f3-97fe-4c42-825f-9211457905cd.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 0xfb3e209c8a3a645cc0fcb39d613ce46391b53a9d0cd9281be1745ec4d0da4e5b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMDA62139663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3322bb49b2a60b67962c1f9ef5dfb927bd3137905c5a75cb5e6b1764316417d. 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/QMDA62139669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d75bc01e95a2897a9044b641fcc4178a7cc45ae30b4906aa12d2a3c61e60ca6. 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/QMDA62139670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3091f6f31144ff52b563339a086d613705609c3f2e7fcb751cf1e78e8019e1f9. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QM4TW2213175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3345e7dbc1aa75c8249ce9a2ec09433ca682716f00b9d9968836dfa2f7e34d2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4TW2218162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2668fa1ba4e07fee90eb66965100211fc559838798ad655cb6abd927a57a7fa6. 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/QM4TX2202885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e02b6484d785d9d7a1749e0ddbf2f9894546a747360927ec43ae45ef686f477. 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/QM4TX2226845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ef2fd587c7b302aa180e127b2a0b6f0f4fee77704690670cf69e2f55eeab66. 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/QM6N22285686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a23727c5f257923006739d887cce9ed32cd40d905088825030cbbb03e0f72. 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/QMFME2239044.
MONTAGEM - BRAZILIAN BASS (SLOWED + REVERB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09e0ec46e4536ed3015dc320f30723fe8c93759950578495a430b19e4f01064. 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/QM4TW2409217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b8e91ed04eb23a6903b218270fb7acd4634c35157a019aa523788311dbf06e. 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/QM4TW2498902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff9cf33db8bcf9ec3b6e3661bd0651f0e806c3bdda4d6733cc2bb88319f4ea4. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM4TX2483345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e916e2866dfb334614d7f0346d223515638b541a00da2446c9949fb6f3bf98. 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/QM6MZ2405453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3f79209c8cdef508bf46b468eab88f153f4440bd6c2dd7585cf08d111ab969. 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/QMDA62414332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6ea59d365cff363fbad36a23be235af4e7b0a3e839fc4413852206cb4cc91b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMDA62414342.
Montagem Sequência Sonic 01 - Super Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2e7e41baf1df3c96ed53e84db478870ae0ff0538ef5c89954d53b61491d81e. 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/QMDA62483348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9ab553ec232c9ce5132a2757b8edff1e36a70cbe7c419d679aaecb227ed44f. 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/QM4TW2535366.
MONTAGEM ORQUESTRA FUNK - SLOWED + REVERB
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb45caf849435da8ecf59f3b0677684e9d9311c08f755123fca35a6f33e7c6b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM4TW2505858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f0f478336d4fc8e9e04422b3e2ab352a6b3a40d9e13b647c7c49d8dd797cda. 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/QM4TW2505859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef1942af8032622fd13dd2ef492626f0caf6e26a0686896930a4ab46f62fc9. 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/QM4TW2576228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97926c83154d62264ebe1d68f8e2053a103f2347b2afcea7a473b8de6c1f53fd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QM7282539375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dc094229e2b3633b34c582eda083f62067056143ec8af3d70f1804c75e475b. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QMFME2537777.