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 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 0xdf79d1547599bdba39fc534efc5709c26ea44957d65d37b9c777e91973f55ce3. 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/e0dc6265-7850-4d3e-9074-fd7f2b4f6317.json and https://artists.proofprofile.net/proofs/artist/e0dc6265-7850-4d3e-9074-fd7f2b4f6317.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 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 0xc0afb8485f834da8100b1ce929b0c84e4561f35a9cb78f73042caee702017904. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BRWMB2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84240de6aac97e07d19fce2ff891c6b06f03e1bd8d7f4efb494e7d67f5c9da6. 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/BX2LP2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4dfdbae46abe8b337897d23e1c893cf529f93afe4bf13f67aa9797ebd97ed. 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/BCVP52200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd456c969adf2e38ae4bde8e4119577292262357ac4e3f798a5f855a80fc16bbe. 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/BCVP52100001.
Rhythm In Me (feat. 2STRANGE) [Club Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc545fe864b4ce1df21cef02588b97ae2dd52a9ffea78489ff2c7c7f3c7aa6a5. 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/NLM5S2000906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57aca975a06007166988bb2793c02e1c8442ba74e48f968f4cd24177b246548. 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/NLM5S2000890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd5d1c7f64d1c9f8d2b352508beb98837e1f930dd2919c3e277d83977dfbbb. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLM5S2000907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57aca975a06007166988bb2793c02e1c8442ba74e48f968f4cd24177b246548. 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/NLM5S2000890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ff16a022d97a2774274a375d1cc72dc0f42693f783559c5d1ac00df2d7e2e6. 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/NLRD52273720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3315a65b4d3680c2507b7eae53ff20521148a56da4c3a4290504341fd2f408. 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/BRWMB2000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84240de6aac97e07d19fce2ff891c6b06f03e1bd8d7f4efb494e7d67f5c9da6. 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/BX2LP2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84240de6aac97e07d19fce2ff891c6b06f03e1bd8d7f4efb494e7d67f5c9da6. 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/BX2LP2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388669d6a320d92ffbf7454985b0a3191dca6d3def8afc6ad608eb1bf925927. 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/BXTXP2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901f5aa400fd53a794552621eab071daa6372135580a69c321b306d572a3ae2e. 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/BRWMB1901479.