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 0xef2eace21cbbca423d22c10bea944da907c42846b2d7351ba73cdb6fc7e6a63e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c75f5465-887b-43aa-82d6-f49aef02a553.json and https://artists.proofprofile.net/proofs/artist/c75f5465-887b-43aa-82d6-f49aef02a553.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 0x34fc5cec78f0fcc593fa2fb215c744ea6407dfa290290b60676d1d151a20a66b. 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/US83Z2325370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168acc7b7004fb4801218768b1bad088ad823bcc168edc21fc1e8b2a48221fbc. 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/ITJ512000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbdf35ef292db0fe1c0d85468d5199d62aa13d6972afea7c0ef271f5d5b79c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US83Z2495644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51326ccbc1914c8811fc27656eeb26fc1e32a9e0e03452760239b8647ba81748. 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/US83Z2490261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c06babaea76282f2525daed73e1e4ea8e3647363a45f1df0734251c5fc5d89c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2490260.
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 0x707d94e41ad5b761d8a6af3df4d21035528c05abaebb15bc8f010e0a17fdfa99. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US83Z2487871.
Leave the Rest Behind (Unseen. & Sesli Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dcf2cd88fdf469aeb3e6af9ff31290a76acfa5ac98973e3acc4eb9a34453a2. 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/US83Z2470394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec560c6c1051d1d74786eaa7192b1491038d9487a15f16efeda16935a7923dc7. 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/US83Z2469759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84578dfafd3a1b359a7a2c49627e954dd98fd75b5d0f100ed675ac55dc941d6e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US83Z2469758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc4df679e9838be6273096e387c1613e6102e149c4c5cff9df5986dd89c878. 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/US83Z2463935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fdc45059edb46d380001f6d30743727896b3626e41d516cd56d29cbb414692. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US83Z2463934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97861eb61187a95a5221aa15de1fa738358927e411f02e60ccb020740fcbdaa0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US83Z2463936.
Philomena - Nihil Young's Chronicles Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a258c570d31b1dd250ede74da6918f154c0647d4c92bb460a792793994a3b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US83Z2353169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7619bce0a5efc11228a264144c95b74d056104c4c29c974813cc4485dd4bf9. 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/US83Z2353168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b337169455b035e45292afe5d48743bb06c511da2c6368ba5f411d08abe7439. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US83Z2353170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd1909800bb4a3a88c3f9aea73ac42a5a5816d091bb91601f8f58d19899071. 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/UKACT2420023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245f31ed17ccd1c8f06db9d719ead636b7d56bb98c989dd0fba3df253334b4d7. 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/UKACT2420025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d1dca37384406e2a6067d1560a7ffc4a1f1f0b23614ee18961a976f8053f1. 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/UKACT2420024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b216be8d9b822cc3e474eac3db84771582f0406415b341119cd690b732f137. 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/US83Z2458253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13cba4619690f17df068b4e3e90536ce9b50e23f9ff223cb58fb2ef0f00344c. 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/USA2P2360449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e83c5fd7cfe352135281e862ae8753cbbe69a3e0fd9a482456e88f3e600a00f. 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/USA2P2360450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00960d4725cfd3552f2c5c15e0afef43dfce5e186acbc7bf646fe4017a5ec3d2. 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/US83Z2352102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5a0e4402dd43de5fc7df82cbf2bc571f1ba5bacb66f67e084b285ec70433c. 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/SE4MF2300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe31c438d2a0adacc7149c71dc19c5da3c2a5c1d300b6508cf00cb27ae7ee86d. 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/US83Z2347518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687b42ad47202751f39cab527d53bfb0e41e368869fa96b7bd3260494eba10db. 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/NLRD52201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53917501c4eac01c2ed99f70c2b9c5f52e17282765ba52722b677a3ab410f01f. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/NLRD52201091.