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 0x6da30d038bb0508bba27643887e38a90c945346e0dc3026070785c9e23e4b960. 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/8da1401d-fe7d-4091-a53e-5fb67d5ba9a2.json and https://artists.proofprofile.net/proofs/artist/8da1401d-fe7d-4091-a53e-5fb67d5ba9a2.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 0xc887acabfc3243b555601ed3987db4442ababe1e89afc87cf1258ea9523d9e12. 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/USA2P2044975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb28b716d4c76bf131fceb2124c052af47b10f6bd19d19456f324e02576a8b7f. 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/USA2P2044978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8eff592c104a0cc0a1b052db15e1ca21229ee4e316501c9f0137ea08857fbc. 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/USA2P2044971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f72891fa8f8885a5f240b95c70d6651c6305d4e2d9b32859d9fa99a568f63d5. 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/USA2P2044970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89485db8c03ecfc0ab9db61387d08b7c69509b515efeed4aeb737580aa10d13. 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/USA2P2044980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f1cefed37b32923b905e2f8dcad339d6ef938dff8c2730dca7455f2d49b26. 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/USA2P2044974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90b7a770b4624bf3de29deb90a295a4d9c52965d20b9a721cc48045e70bc5fc. 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/USA2P2044968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf955e412d5bc3c67d5de489cb011d86b29cf4e23c76d856d814f017b92aef45f. 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/USA2P2044973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983c0e3591bcdc1e2b0431b2f97c4dd22625d6dbac55f4f0ec1794f8b8ecbd69. 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/USA2P2044969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829a8443348f10ba319f4bc5fdcbabd67ba7fbcf4f15c0f9f218e663bca540f3. 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/USA2P2044979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1b28d527b531cd24a3726324f3e2449bdd3a808f73277bac3be349d4303ee. 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/USA2P2044977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8b792f0d8a297e8456df9a0e0c63b639d1f826376333047333e818d3fd1592. 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/USA2P2044966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dbf3cc0155ad549105b6bf864504330c679b06eb8e6ea696a9d93bf58cc84b. 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/USA2P2044976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdece2c0a915fe532b11aad8565bbfc7c0e4a231067833290aa7d58eca0d73bf. 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/USA2P2044967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27cab758dbe26fc6066c6f1d5b8996c656aacb2ad952ea4e2c741a9b770333a. 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/USA2P2044972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10381453a7df3bd6943e061547994ebef39123bd4f05f155eadaa247d76c6b9. 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/USA2P2045612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2868a7c8de976fa5fe8209c07d36382d6aa6ceb6cbc8fdfcd164735228b99c3. 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/USA2P2045620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff82d4b3b52793b593c21583df19ef2dbd2ab3d6267695ac62ad4658e5f21d4. 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/USA2P2045621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f4ac6b46682b0ebd93c7746001d74e1f50037c06b4dd59745033fabe6ad318. 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/USA2P2045613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eba55d19db36df7b07db268a97f4c4a8eb34a0344f12d79654c0293cc1f937. 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/USA2P2045616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8003195ce88a5188dd3317b46adc1bcf1a65627b502c5d4297a6cb6bf1a6758. 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/USA2P2045619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cb3613296938cdf504087810bce6cee201f4b0ee9aab51fa24c26832d372c1. 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/USA2P2045618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387ba57a801e7f7fe0e720a8ff32f8ca6d6b0ecc7924dfadb056cb9b76e07613. 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/USA2P2045617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a073a3f61167c4d45c8a0fe7dad5ec3245a4b7053032acd92580d3731435d. 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/USA2P2045611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340de27152a867a21282651d8bb7929c36561933bbc2c66ac903523125eabdbe. 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/USA2P2045614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd307afef02dfe0f49d6bf143460c3fc8c227bc1b5d6d77842e6622e86e3f1142. 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/USA2P2045615.