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 0x099f3349b0774359bffdb2cf90b8b7103b5f5e91d13d57420c3a16b17d032f6d. 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/e09bd719-01d5-42ac-8032-e2dad630993f.json and https://artists.proofprofile.net/proofs/artist/e09bd719-01d5-42ac-8032-e2dad630993f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Came Out Of Nowhere (The Big Bang Theory)
Came Out of Nowhere (The Big Bang Theory)
KOKO (feat. Majorsteez, Benny Chill, Henry Wockstar and Shane Deep)
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 0x500a524c7dd64840e57c86140ee843ae7c1fa25745a448856283dbbb2fb6e303. 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/ZA56E2200763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d1d71a372f332c20e3c5cec178408a3e5158747c5a01cdb5d11cc174ec41ed. 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/ZA56E2201598.
SOHLANGANA (feat. Leenathi & Happy Jazzman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c74410a469d9d162155b009dc3526446eaf96387ffb25335680083737521e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:52:00Z), 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/ZA56E2416312.
Delulu (feat. Tycoon, Marcus MC, Shakes & Les)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56be2a3b055c9b35fc9e3b6c30bb42e3873440412b8e39ccf6c72fec8a59b012. 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/ZA56E2306409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf3ced6d331f2ef846f3024127ebe60e121ce478a5798b2a1cfce42ff0273d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA56E2102231.
Ixesha (feat. TBO & Jay Sax & Sipho Magudulela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46338e4d4aeaabbbbbd8947aaa7ac5f6b514aba9d86d7fbff5cb380847223352. 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/ZA56E2201738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8366c66906d4b9967e6aa3be583277b16656405796a8e7df8e78495899c7c549. 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/ZA56E2419657.
Amanzi (feat. MDU aka TRP, Boontle Rsa, TBO, Mthunzi, Bassie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e4e40a1030a0d437ca01dd77747bb131b64246ba28fdf7f44e3af071d72807. 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/ZA56E2201176.
Simoja (feat. TBO, Kabelo Sings, Shaunmusiq, Ftears, Xduppy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f93b4ab415528fdcfede21b9fba31aff1fb43872e6c6136836e7dafc8af960. 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/ZA56E2304122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a61b95663575d81e4df9bd8c7687150ea42443995f9917e06961306613d397. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ZA6EE2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1099802a71215698ea027e9091311949323077291d378f3193f5f715d6c49ea1. 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/GBGLW2301336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f93b4ab415528fdcfede21b9fba31aff1fb43872e6c6136836e7dafc8af960. 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/ZA56E2304122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31552d525f654a78c091b59eaeb349ce4013fba3fb35350b4c215fc504b7f962. 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/ZA56E2315146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd653d4dc03214858505aa4297334123d14c2ee523fdff434798d11475247b1b. 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/ZB7LS2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80608021dfc0f7ace475f70b0384eda355c4564e18c0fbfb82710973183bc9e. 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/ZBIKJ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426a07af0c8207d1c76aaad2e9998a6e8911371615bd30bb20dde5518487a7c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US23A1589523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb941b81875d97d8dbfa6d7c69686d2d62bfb38facec74c33c61a4b22dec5c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBIKJ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1b7ff41d6c1d8deab604140a691d6a12f7d6d3c20bf3ab2d3ae90f9ef7718. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA56E2527252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9217a842dd4fcfad71a1c24cf578343a33eaf7bff7c53cf76cf2c6b4658906f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZA56E2303995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01148b932aa64fed29e9101486a3c949c3c80ba9d986f18462ea9acea9a0fc. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ZA56E2200274.
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 0xa07f2909563ef11c36944245223f7b8987d657cacf47f731c0f6f89b1f8eabf1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ZA56E2303370.