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 0xa1bf0cb9ccee4d720c191bea5efe0dd9e7fadafd96fcf6a11d6998c4fb62e081. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef33008d-f310-4040-b365-eee11abdbc7c.json and https://artists.proofprofile.net/proofs/artist/ef33008d-f310-4040-b365-eee11abdbc7c.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 0xbdad01434a44d80771d476dfb956919c722e85f6ef45c8b8e84e5ff4dc862f07. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ZA79K1500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82bc8ee364bd60a7c37d8adb35ddbdc8dfb6d9c019018fee7aace5159afb6f9. 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/ZA79K1500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa794e3f26365a9cedd43e5fde989b6e0c6c02fa4855c65f309daaeb9ee11c0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZA79K1500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697efbe6dce22250a1fa3c321dbac8adbb31dba88fb8891894f1d1846a9716b7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:41Z), 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/ZA79K1500048.
Happy for You (feat. Kaylow & DJ Sumbody)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcad1d617a55b75b366e2a4864fc110f4fa9011f9b8b57a1a60f8ff34f0be64. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ZAA012000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ace815b609e796330de7927032ec8029d4aa783daf3a7ff1ac000ce2ecf9f9f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ZAA012100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a27b7747744dcb659c2c4f0ccdfa6609b457fd3ead3d53939e750ddf5777df1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZAA012200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024ba42bfd161fc28be58052de5253bbe5a4e9d9fa82910f0be2f4b7ac503fd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZBZAY2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773dd2db1b024fb4ab10e083abd61f7c94f835cb7a4d9f5600fde33cb9d03b1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBQGW2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d45c9886e2869dd46130d787fb062687fe8889d1c7d972776b20c59c1afb87. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZQAY2478280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b6895a8449de2df161ac65909efcb4e6913216af3f19835114f76ceb1fb2e8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZQAY2474355.
Stlamatlama (feat. 25K, Abidoza & Junior Taurus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa98c37d55a79faae5a72642925b6aede6d7691317299c818ae7183b6349ca9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2003196.
Sho Boy (feat. Riky Rick, Junior Taurus, Buzzi Lee, Yanga Chief, Beast RSA, Focalistic, Blxckie & 25K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f643ad15ab939203925aef602d576d176236f4a146de6137697da98bc6d65f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAA012100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2197c6fc3e785fa5401310b5bad7ea973810628225896f2c90ebe7d8e3034e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ZAY361900534.
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