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 0x86b6cc083af4fda8f19ce5b063d0f03728626217a7d92925c7f0373089e8c243. 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/e308f28d-9395-46b5-ab31-edc7230fc340.json and https://artists.proofprofile.net/proofs/artist/e308f28d-9395-46b5-ab31-edc7230fc340.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 0x8d997679a9fde6a47671a66dcd31972d443bba16a303cd332c86423c96b60931. 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/FRP3F2303160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8925a5c5adf1c37cb15a046283726a3e0b1907be9616d97b722891fb87f218f3. 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/FRT092200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487a00762d73b8c4edcdedcca8b9472c1779f1b9a889cd7f4ac3877f95033a78. 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/FRP3F2303170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4261ef65b53a075fd5eebc4711387a3d8462b8060797a6b5edaa5f03d6bdc866. 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/FRT092200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa2c9386186e4b396a683e39f199db9e8c57f50b2d469a0f71a8abe02be625. 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/FRP3F2303180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72611d0a2671e4354548a62d67f01622c506bb84915e931e6bbefafc7ac0fe. 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/FRT092200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa64df3974903a77116060ebc535639510c801c265a8072546e9439e97ab3f4. 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/FRP3F2303190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f8b12d0fdcd21586246772861e7c9249b27524d9609fe819817d49f480e12f. 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/FRT092200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdabb18fb9d204dacc20dbca218885c65111271a866cfa319cdfa3d8291bb754. 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/FRP3F2303200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f644f8d1a3cbe877d7ff370b46a35a841de5687e7cbc23be378766ef1d7f2a8. 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/FRT092200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808eca985ecc00f17efb6599a216088d2440ded9f4a4e3c922e5b6cc73e1e2d8. 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/FRT092200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08ec563e785d5409db584329f12e821658b73e00918a64ff2263503233a2cfc. 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/FRT092200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf23c0d62910160ba2f6a9609239a939073661df0135a4be84d83c2039cd2bd1. 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/FRT092200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5066dddcd1b9e9dd03a821e799ca16f086babf51cd6b4184eddd3ef302123d8. 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/FRT092200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05aeea25b9464364ea75edda360dd25f0d56417e0d67c796bfe94bbff780629. 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/FRT092200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072b7c5e0dcae9756c8c659020fb0adce89a8184a10d50f28148dcbae61f7eff. 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/FRT092200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8925a5c5adf1c37cb15a046283726a3e0b1907be9616d97b722891fb87f218f3. 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/FRT092200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4261ef65b53a075fd5eebc4711387a3d8462b8060797a6b5edaa5f03d6bdc866. 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/FRT092200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72611d0a2671e4354548a62d67f01622c506bb84915e931e6bbefafc7ac0fe. 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/FRT092200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f8b12d0fdcd21586246772861e7c9249b27524d9609fe819817d49f480e12f. 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/FRT092200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f644f8d1a3cbe877d7ff370b46a35a841de5687e7cbc23be378766ef1d7f2a8. 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/FRT092200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808eca985ecc00f17efb6599a216088d2440ded9f4a4e3c922e5b6cc73e1e2d8. 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/FRT092200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08ec563e785d5409db584329f12e821658b73e00918a64ff2263503233a2cfc. 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/FRT092200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf23c0d62910160ba2f6a9609239a939073661df0135a4be84d83c2039cd2bd1. 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/FRT092200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5066dddcd1b9e9dd03a821e799ca16f086babf51cd6b4184eddd3ef302123d8. 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/FRT092200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05aeea25b9464364ea75edda360dd25f0d56417e0d67c796bfe94bbff780629. 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/FRT092200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072b7c5e0dcae9756c8c659020fb0adce89a8184a10d50f28148dcbae61f7eff. 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/FRT092200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49255f8cea0910f88ffba9f52ad7345e4cea8e54b5302b5ad0a70bc1d2a7a6d. 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/FRP3F2202830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bee04a14e7b1b9ac353e37504026c98d848fe5cd6bb292390ddfe5d903e8d89. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRP3F1902990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbab7ddbd530beb98a1e19e3031892ab45a900e6b7e63c2a0e309cabddcf7d1. 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/FRP3F1902300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac96cbd606abfbd6cac6b4c9372cc72c980171c350b69e5f89cff48a6d6c60f. 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/FRP3F1902320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f96407ec43bf22145af0ed8850c9fa65b6419a1834b8362ba2a5b66a55951e. 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/FRP3F1902330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691e6d43062281960eb2729f6a4eef7c45af1358ab0daacce903fdb1a38a31d. 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/FRP3F1902340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9672c306cdaec00f4395366a98ff30e7fef854d67cc71fc44cd0fa86d5f32ed. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FRP3F1902350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac79ea259987d7633b05ea5df8887138b80a289c066445fa57812d2b482711a5. 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/FRP3F2002780.