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 0xaf043968e29b34d09e0254a514c431056e4ba49f86d8013806a101b8b78bc457. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ae3c45c-c567-4fa2-8a19-239fd447afa3.json and https://artists.proofprofile.net/proofs/artist/4ae3c45c-c567-4fa2-8a19-239fd447afa3.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 0x1dfc30ee27ac3a611aebed548dd723e707c49937fca310877021814eb029e8bf. 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/USDJ20201342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e85d9dbf901bf8f83bf30627ac0780f5ac6dc23db9637e58688aefc30c9284. 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/USDJ20300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821d9924964a14c9640c1329f3b344ccdd81aa151e3393d49d75f7a73851f37d. 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/USDJ20300106.
Follow Me Gangster - Cradle 2 The Grave Sdtk Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e64156dfbb36e3680f4e2c6b85f0c25838662dc211bec9ce480281190f9260. 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/USIR10300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547eb0340786f44e1b0301bca576163f3246b2e19c2c7cfe4507f9f5862054c2. 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/USDJ20300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa6bbcde11f952c9e509edbbdb291b3daa383414fa29096b04a8b4799af58f. 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/USDJ20300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccdbc68401e4fae7dc4c593b86ab4769ed02cec7b8fc0f61b318b1a93365606. 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/USDJ20300112.
Fireman - Cradle 2 The Grave Sdtk Version (Explicit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cde93a966b7017574a5aced9dcd3b2836abcaf1ee47e6182982235a4dbd5313. 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/USIR10300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba4b81aec059bf6f3cd88239a0f8283fed47bb7f1273fdca058b68ba11ac1e6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USDJ20201415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c55c1a0c100dfc78254872d70a2a84bfd9f655bb170377258fbf858e7bf66. 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/USAR10300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0036e0f638c9e579afee61a2b8e91063789206deb18a996730cea4ebd5d83bbf. 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/USDJ20300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa069efd27c9e4cd3ed7be0326f21f42d4f08e9f6c66799286bb7d45cdfbef729. 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/USDJ20300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0c01bfa74d8f5a38bf01a4dab3a589987be633a3bcff39ce39218db0ab8cc2. 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/USDJ20300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cde0dc98181736d1cf4f9f77ef11ff2373bf14abe651cebaa2891076631c377. 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/USCM50300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf49f7f4d5f9f6bb05013144a6aeacfec8a9ef10ddac4452a9df599104be141. 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/USAT20300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008190eee1a517225fa9734eab3aa94b5b29bdb12f7c0f37338970f91c6358fa. 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/USDJ20300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36fd09a574ccdc54cce702328b887c537f944c5abaae1ed938c9b6163fb13a8. 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/USUG10300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3eaca8139b7decc508519081c0eec3dc51a237647a2f740d738b7d98bf5fb9. 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/USDJ20300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918f6d8d7783520b362f97e51ac69d16e2df3cd7a469c7fa7b3d0575137f38d6. 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/USDJ20300125.
Reggaeton Allstars: Reggaeton Hits in da Club
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a0aaf9323b333027a726d16025cedcba60976b4043d2c9279af037f7c9f181. 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/USLQ20823402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1759bf095942c3aea1be893e4ef9c905df27f28ec6f7e6c2cd4ba81702442e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USLQ20823403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa0d4d65a1555c12a74563b777af4a83b331a52acd56ec64d5d8771c91990b4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLQ20823408.