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 0xc88121c2425207c06b6003c4354b27191887a026a67a8d524085c245b6a0281b. 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/2c6d09ad-5b2d-4f69-b8b2-ddafce350045.json and https://artists.proofprofile.net/proofs/artist/2c6d09ad-5b2d-4f69-b8b2-ddafce350045.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 0x8a02aa04cd403e2befbcd91c5fc1b1b7a60b3745101780140a07ff508e7e3686. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USCGJ1322679.
I Once Had Your Love (And I Can't Let It Go)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ebe1fda4385404a6c6063c96f4a3deb44eedb26e5c2eb680b765b1f1eee197. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM21498393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46bb58722c644569b83020dd31e11e78abc7a431ef0cadacd6573baca6b4e2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USHM21880412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7b9ee2515895ee84d80a5aeafd8b6bcbb9fd9129e740ca6fd2b016b9deb285. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMAAK1873842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20980de0e8cbd640a629662d5ffcbcf2413a1a8371d4194f7df3487335495879. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLE12069403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f7a9242901d53ee90831a6aa068b3f2db444ef88f5bf368ed27690797d0f6. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USLE12150201.
Ain't No Sunshine (Featuring Ruben Studdard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69da1d5c585f102e5d32818197f891604feb4d4e790dfa553560f4ad1706ec97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLE12204101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48e103aa7f66679d14be95612a1dc958edcaf24a895d58a0ef1a6b0e5c148bd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USLE12204111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015ff7d343fd852dab548eefc22e4ef1efafbc1247b877d54c607e847aa7b868. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLE12409801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58daf6eca3e03cbc661ba34ddef3a0519d91f3a8959365cc4ee2acf20c8e6646. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/USLE12412001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da73d522ba756e79bddefd1b9e56bcb51caa0fb9521ec0508ec69fa51a3270e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USLE12512501.
Close To You ((They Long To Be) Close To You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bca26b10749bb76e987b9960cd71352b672d7e6db25c42602b72befea3754b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USLE12512803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015ff7d343fd852dab548eefc22e4ef1efafbc1247b877d54c607e847aa7b868. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLE12409801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd335a8a9250b9fb202af2dccf04281266df106cd90dde451aae481e1f6da96. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLE12512812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cdb0bb6a762462b804f6e48374b2f18f79510441ff371f84eefd0b9fe6a1e3. 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/USHM22346025.
Watermelon Man (Radio Edit) [feat. Eric Essix & Kelley Oneal]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4416567f7083640471adff3a4d86d88327cb2715eb0d966a5761fff0c31fd5. 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/QM9AA1524799.
Yeah Interlude (feat. Kelley Oneal & Eric Essix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8586d9c730c72054924e842564098780bf21f8d63f19987604c4757612fbcea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM9AA1524800.
Watermelon Man (Extended) [feat. Eric Essix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e3f2f90832c941c5369cc27376e3a57641af44eb7aa2736e8437b342de211b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QM9AA1524805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd33177deefb25e4f045c821f16b7d0462ffad7adf51feff30a919f5199434. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM82134486.