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 0x5b3621337333a1d77c6eb42e9a7ab77d07f40d1f747c1c2b8c8abef8edd72670. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cdf1d05-e649-4e61-b3e0-4d8353f3a4f3.json and https://artists.proofprofile.net/proofs/artist/8cdf1d05-e649-4e61-b3e0-4d8353f3a4f3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d7c0d19898b5a4f4078a333296eb1e7931f519c4f94a4763176936a0803093. 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/GBKQU2420416.
Endless Love - Hardspace, Len Faki Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c2212e88e4b8673b7bac2fe5391973e170d5dc4b1ad1374331ef9e207324d. 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/GBKQU2420417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eecf4fe1a5d1ba1b0856dfe92994e98c47c51c652d95f6071891698f44501b3. 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/GBKQU2420418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb745d1a457b01bde6e2d5b8bf9455a8aa25ba8f358445098fa98ecb76d1e9. 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/GBKQU2420419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7f0626d123720308d97d61d8adaf07fbd33bd22b0c5a6dc5a6ab8f494449fc. 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/QMSL32300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484e84efcace62d205850d027d76365507cb95c055c690ec1659e788f87dcdf. 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/QM7282491336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec42074a849e06d167ef75ebd30e6a46f66f23570fb9497d8d1bcf7727a181. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QM7282491337.
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 0x69f5ceeb8e535519921413a558a4ca9c313971f2b15115b0bc3bea5138753e07. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QM7282491338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef565d271259db4b85755f15a1f69ca70cc10c38e7acb9dabb4461a0b4764661. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM7282491339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad7f94f94a474b6f2e6fb8fab1e9c3adf82144dbe761a78ef6ae45e7f159d6e. 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/NLCK42217280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f82a567909a9d6e0caf916067e087646c1b3876679ec5a2a981f4e3012f7b9f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK42217285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab791bf8ba59b66ae617e5e9858ada0a6369ef7e8b88323c5c08c98356016244. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLCK42217281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6116f305e16b168f6cc02fe9c8374b3ecd6ef2cd764db3e43930256bf3292d. 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/NLCK42501431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562fb8985a5a99efbcf2cb63d68a88c6f599fec8794119675d76aba2d3647076. 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/NLCK42501432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b2a5787afc60bdd321126db79aeaaebf5824be80bbd7cd6e28250552faf777. 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/NLCK42501433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f697ece9789264a5f49ec59124d478a31408f569fbd0377970014882ff228e9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLCK42501434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544ca1e4979098dec80f94c1e9ca46b50a424ca843ee9ad28edd57c539f64b5e. 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/NLCK42501435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7af750025b02c219197e3cd982274bfdc66c21ac104bdddcf1f038898ecd98a. 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/NLCK42410127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb96079e467f0b2ebbcc670bcdcbbdeff34a8e1f04ac4b8bd27144ea4841f620. 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/NLCK42410129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3cc09ba5fbaae800ffacc5ebae118d038b51fa6f22844e3f3700b19693475b. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/NLCK42410128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e41e166c22e838383ee281665105b93aa62f9012a1b29b20f091dc631e9ff70. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GB2AF2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17171ef9dd6c3f0ddf9d729575a35188aee43bf065bf8ad854dd403cace77e58. 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/GB2AF2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5392bb7d18447ac2b3ed1bfe1cce02c022047260cb74af291e8f630af141e36d. 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/GB2AF2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9445e89599f2729d1e67fb4288f277830951558134e6cb6b46ac5a311bfe4f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GB2AF2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6844d2046f1c22b2c2d07f3620654dea14ff070be26ec68ce9575467da489159. 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/NLCK42233813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa7e93340deb84bac97a4b73cd3bee9672447bc56ba7617711a9b1f180dbfdf. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLCK42233814.
Do You Think I'm Made Of Apples (Vinicius Honorio Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c477f87a39b6c5a36cce21d6652843b53595c71a743c5e4c24b42533e4fdfba. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLCK42215211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedd09a408922242caa44a3bf564dd92dfb9095ae35ed196393572d439ad3c84. 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/GBKQU2054634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8388c3fe9ef8a02a40fa965295a0074a647e863b9ad17a5a439087a66071cd89. 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/IEHDF1900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3cd5356230c447d889fc768536ab98ea4865530d38a530013cdb4ed42bb413. 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/GBKQU1968290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b3972f84e83df3576a5e79d65dc1012c82a492134fe1d5198a2da22d0a004. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHAD1801410.