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 0xed28b31ef99f07a92b07ee7db3663c682ab1959bbceeedfe06dac0b7ca245764. 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/985fc174-7597-4b65-9981-9b2d4d99ab59.json and https://artists.proofprofile.net/proofs/artist/985fc174-7597-4b65-9981-9b2d4d99ab59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Walking In The Rain (feat. Nas, Exodus Simmons & Denaun)
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 0x7e2f5c698a4b0eff85d8821ceece2b42c237451a4c38a00be8d0ed05b208194c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUM72107065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4c09440ea09ad505642f809a53b5b6d57b6f0c398a91800db4a429d0edddc5. 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/USIR10312139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578b30c72a9dc6285506deb15efe2eac85b3972fe260ccd01304218b0c424e22. 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/USUM70603679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9115972349329577b98ed452b803fad71e410353c003e854eeeb17b342154ef2. 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/USCA21100274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710dd54248ecdc06007858f3c474a98bab9e463b87442e4229149dde7fafe531. 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/USQY51410012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316ca69b21deb5eda15ad0d3053365cfce77dd6b00b7cdbae8c23e280f1d3c5f. 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/US6YF1100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9209f05085b8ca351ffac6c0d7b3b60503ccf053b6966a1c75c25d17117fcc63. 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/USUM70728508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada834fb448a3ce8427eba6b368f466367f6694a95155cd723631e9c273bc906. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USUM70731162.
Intimidation (So Fine) [feat. dEnAuN & Pharoahe Monch]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb123d18e77bc964528c8e141fd5c6cec5327f889f00db45cf06c1e76c9d574. 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/QM6W81400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eecd5e0a0282d6bcda65c244264cafaf48a9b99d33dc6a99b05b8dd84733936. 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/TCABO1321493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458c71e187ea7f5d7e6c679f494487dcb7f36333e56afc48cd77023a9b971ff8. 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/TCABO1321512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda124589912e971b73be223d7f4d9afb0bf8f3678eff210aa429afb294134fb8. 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/USA2P1617747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7deae5ff959927be682e0ab5eb1bed1fdd1ccd7e1a3797a9fadf443baafef7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P1643816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dbf07df05967989812c066e8735fd9a3e483ada52f6e04039e7423e1c3bf50. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZAKB2141426.
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
Walking In The Rain (feat. Nas, Exodus Simmons & Denaun) - Acapella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a80f6974a8900f650b9ce0ba51f28f77b24200a9aa99d0d854621855fb658d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USUM72110591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f8f096d1ed2498553dd03aa9ba26c839ba1a42abb723bac4d4ba51e0d1d13f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US92U1903420.