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 0xb196fb599a567dec401ef681548ef9f209b9f81aafd18a2b0dbc79d7fd407fbe. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85a87c7e-68e9-4dc2-8e31-2bcb4f0909f2.json and https://artists.proofprofile.net/proofs/artist/85a87c7e-68e9-4dc2-8e31-2bcb4f0909f2.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 0x097db4405fa54aca51c234db4480d4a3473441c93da926fa441d17b8de74a8d3. 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/CZA090908104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5702b3752b5cedd4a44bc2a8e6c6f2725cfcd896036e3b15a7b420ae61c6b8. 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/CZA090908107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf426af494df37cf3a7ff5ef8cf4c8365808f7bcca8953dcff5ba953a86bc7027. 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/CZA090908112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe611aa466280ea456e424448ece62e3e0cd48315b577dadf7a50b62c1292bb59. 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/CZA090908114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23a3303a12141b4f7936bc2d6f3bfa1d25bc5e9459380f57e1ae46bbad6f6bb. 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/USA370580311.
I Wanna (Grand Prix Eurovision 2002 Mixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db63e2d1b22914afb48d7d32570e0559c66639f6a59919e0fb23155f299987b. 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/USA370580255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db63e2d1b22914afb48d7d32570e0559c66639f6a59919e0fb23155f299987b. 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/USA370580255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b13cad4172e9e33f03e0db3a7160e67a66ece6f8ac0807f2d3f4b1be21bea95. 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/LVA100300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10b825668aa474712da81cd41faf2e37540f23152bedf2708d3f657038b82f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVA100800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97358438cf1575b3fd22efbca6f9a730fb13d6f7e7eb52b62ada24e16d2e32. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFMF1493011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf506113127c0245ad32f3a879f141e4c2f16811a87f226597982b41c320b06b. 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/QMFMF1493012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb6d0d1565de62e7519fcbeaa724791eee896f05bd0b3d59241757ba123be44. 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/QMFMF1493013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78316e5e3e7593371369f0c30ef08f3abb5fb06b084fe6c6f9825c958d1da1f4. 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/QMFMF1493014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a8dac4e87c70116b1b66b09b03ee4c2e0ed9d2eaa7d6e1f56b84507b8a80eb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFMF1493023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea18a580c11fbe79ca5728f0eb015c9901af4316f5149a3d675b49d98c6e886. 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/LVA100300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd8fce6f64d52acd077dbf88e388edf65f52b4fbfc949e8b18e80a6f88b7e9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFMF1493029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4e919c47a3b677df875b2f370dc042b4bc6073de35a61d19050312c3daea8. 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/GRSO10800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037f6fbab870f98258e43e89bbec467916fb2f88df59c5d263426c6dc0f96e43. 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/GRSO10800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba0b675ed913437afafd3554f99ec1c535a78d8281afe6fad731cc81d013e4c. 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/USV351406456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb57205b5fb54356e43f63bc1de95015525132c7d3e27e7e008aac97b12bf284. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV351406466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1722802ce4f506a39c4e81da8273df8ed3e8cba6084ada340ee5db69ec037028. 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/USV351406469.