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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc75553428a0bf863252bff25bc41d58873031494c48ea42d9e7584ee59de5a5. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1c3a199-93bd-4cc9-94d4-236682c2884e.json and https://artists.proofprofile.net/proofs/artist/f1c3a199-93bd-4cc9-94d4-236682c2884e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eb49533f4f550af571c7f7a5a6ecee1850b4fda8274bd27a7c6bef12ebe38b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:39:03Z), 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/USASN1300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878bd31ead2d3b846068e4336bccb3ed7cec86c863d82ff3d2e4f2bfe25ee6b9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USASN1300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3152d3e8972e5b2e6c361a9e264cf7c6d2dfc53c494302b3d31df415f2c8e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USASN1300144.
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
End of the Line (feat. Mister D & Cuete Yeska)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe470d9dd54f81b4a143a60196d0e7ade156f6a5050a75114a4d2251817eb9de1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USASN1300145.
Can't Believe That It's Real (feat. Selo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ad065429cc5eea5a5e79cdf61a3ee9ad27b600eacb902a31c2af8aedfb48c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USASN1300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982d3841d3bd2d2338d63394ff11c602fcac61409cdac57d61176f27028e86d3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USASN1300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5ba80071702dada5511dbf90a1ee4126d6ed832b85a538c82d20c293baa95b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USASN1300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeaec9888be9d30df559c7b908dffdddcabe9fffce48140dbedd8fdc6dc5f85. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USASN1300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487bd06501704c4f3f7b021c9595c1d4c4a1ac69c4ef5998a983f5bbd31f007a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USASN1300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8f51d105c5ca3c32589c0c858322f36887a63b6a413da9b50345c24079584. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USASN1300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3172bd1b5147577641d248d8a6c2c66d61a162d3be2cfb468cf2eb8d7a70eb0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USASN1300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7b02b564882b6313fe81f03ecbd9b5775a0209e3fb31cc11a589461cc4d4c5. 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/US78T0724518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a5d4741f2b08bb1abef2cbc42ddf9095a0ebefcf97583e1d0cb528e4f0a237. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1696346.
West Coast Shit (feat. Frank V & Mister Silent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa6d00d5dccbc3f6f3c1cf02d4052a376e54d6d2a537abbd53547b83db61912. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USJKM0704213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551fb89a3e043a534f1ea41c0720f7d4f5abb80b84807c78ba27b87961aec128. 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/USASN0800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e995295a163cd9eb664b138e31a8d3a5d0f8228d07d74499b9b1d2276b5691. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USASN1000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bde9cfb702f54d4e613a28d7bd62bace9231dfabcd10892bfb993d8b12dffe. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USASN1000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d823055b72324c635d8e49f6c126e863464ad700138ccf78b3534bcc62fc472. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USASN1000423.