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 0x99d476e3a720ac9c2b4fa3bbfcc5df9243d41f228c1f1398ef773d96bf2e2dd2. 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/53a04ac1-0ea2-4d1a-9de4-c882527d067b.json and https://artists.proofprofile.net/proofs/artist/53a04ac1-0ea2-4d1a-9de4-c882527d067b.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 0xb0b8ff05b527d77472f3af297635e272802b6abdd7c9c3960066d81ddfb362ed. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USHM21800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484c4f0a8d35e34b5116e6dcc0af27256de09d63729169c062d45578fd7cc4a1. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USHM21800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736bb87154c937e7cdd0f9151f3010354c78914c42566020d2467de689aea3fc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USHM21800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec6e2bfb0edfc9ebde33f4de7e3688051c09d6f061b92d8b23fc33119713960. 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/USHM21800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b22b3d4cfb15c2ec6fac6ffd6ab4022ed20b265b559250002c8b691e05183. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/USHM21800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671377d1564f49920f77056f52be76f3ad24013d45b59f9ca43326e94b634d94. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGH1919557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072910e4d7d628823ff0a909b0f61cb136b83c7f2c4f9be473a7513b203ba54e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCGH1919568.
Burn (feat. Sertero, Soda Boy, Pistola Bang Bang & Hippie Mafia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97017ca7e9985403c260c4f732c5f64c0a271b80955d5bb99ae266e422ef641. 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/TCADC1799749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14abff332d712056e33e92363d5390bd5c771e1be78c2569228ce4e97cdf5ec4. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USCGJ1880811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446a682bf9aa15726d4a74e45f33dd507022d4b420fe2ac4787686eb2437663b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/USL4Q1829216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0e890620c2c888ef6978eb1628efb22bb257ca709192402edb030c210f6d8e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USL4R2061247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa483238b7163a1d5d66bc13869a39870caa29c28fe95b33a1bc76c37ad9e43f2. 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/QZNJW2252385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec553ae11999f4c3f6fc4058d246eb543fcdab8f243fb73127cea5884995625. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/USY242458125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9294bf1719666b32e3b6d63f1e9e775b7e29b7e2fce031bc1d8a1102a339c2. 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/TCADD1748869.