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 0x6e21e35ef31258e271a8e8fefc341a85158c7e33809b7245309b40b8e39b7adf. 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/8d3a3fe3-6361-4ecb-8097-65cf6bfffce0.json and https://artists.proofprofile.net/proofs/artist/8d3a3fe3-6361-4ecb-8097-65cf6bfffce0.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 0xdcb688e807662192755977db3ac1d499def3541525fd736640691a9ca4cef6f7. 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/USJ2P0800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a3073245fcc5acdeb8783e5764715b30f8ea7ec482f0041eaf6f03aff7bad5. 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/USJ2P0800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9261995a2f09a98d4f67e2729725f2ec7391d699139d8b28d8a972a334577fc6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ2P0800366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dca792c986e5d476a622de25913639ee47818ac2aab924d3b843bafdb42ce13. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USVKM1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f72d2eaf1712b071dde0897be8b26c9a7889d5a21c9e24fa9540f5342eaa0a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM9AA1881279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059a3b84e308bc53d88ec51d56f89bebb5ace9640028c921fdcb38db08117f9a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZQZ22200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071e4dae6b7a7603806c081b78c97ad130404067e25fc5ef1c41046dba8e431b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZQZ22300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bbb9d4851cfec2fbf99de7994503ee940a7e8580a90343a23c79e6334aaf3f. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZQZ22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf5f29117465d05e95f21a45babeb2feddd201a1090cbae56a7519f5dcc662f. 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/US3470850294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5de3133734ee4e3927bed49f4f2b6e8c554e22e5b346fc50fd5cd5efb7455. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QMEU31815512.
Bring It On (feat. George Duke, Darren Rahn, Lenny Castro & Paul Jackson Jr.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5919eb3f7b4c9abdaf123f7d7442398337392e6ca63f007567113a0cb7f4429. 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/USJ2P0800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5de3133734ee4e3927bed49f4f2b6e8c554e22e5b346fc50fd5cd5efb7455. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMEU31815512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c43e9ab83ff3f6f36955450cf4666acd994edc428c2e1f787184bc8bb142f41. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM6N21414914.
Steppin' Out (feat. Najee, Daren Rahn & Lenny Castro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef8b9c6b7f768b89a5ddf07f764cd81d4afc65c0edc4fea3b4cd7f4c04145f7. 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/USJ2P0800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5de3133734ee4e3927bed49f4f2b6e8c554e22e5b346fc50fd5cd5efb7455. 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/QMEU31815512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e10dc7af030ead4dc04748a3e1071db29452b02bbc914141c624c4e6f467cc8. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QM4XQ1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c22d883f2f7edff3c1db8692283bb024944f780be32e78bca46753a9f1f6534. 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/QM4XQ1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd945271d07a9a582af68c594fda74d1d50975d74600483e7c6348501a5187f4a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPZ922200655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202fbb5c0e3d76e84324e1da922caac34187f29bae71d08f45ac541bbf2e01c5. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM6P41428561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4447be0ca38331ae5820d44d0bfbd2cd8667dcff4906c2b3855cf4fcd63dd63e. 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/USVKM1600032.