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 0x0ec1e20bdaf6a6382a16e0243efe292ead02044d5fdca4725ce4985b9e82df1d. 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/8ec5f9d8-3039-4222-836a-c6c58ce7dd3e.json and https://artists.proofprofile.net/proofs/artist/8ec5f9d8-3039-4222-836a-c6c58ce7dd3e.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 0x3015d6bbbdecd77a620e0b9230db15b3865484446bd2653152f15f48f599dbe8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V89902922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906f3b0d9a57a20bf6cd13c6c0c6fe00024bbf4984be2187aca6f83c1174bd51. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR6V89902924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab3187740101e39bd9e8c88199de8c358eb94423f382f045a91efee1e9e7163. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR6V89902927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96f47ec3cca8d07180223e52fee0fa19c81d9bdd30876cbb2ae8b2b5097d890. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR6V89902934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71728f39e1226c3628c9ea32b3f794e58eaca2b914a4892bb3d794f1439ef6de. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:20:52Z), 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/FR6V80104281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d96a3c190c654088cdc498b3cb3fd3d1c5db367f072cd5c966ee7145dcea4a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/FR6V80104286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3a93febefb31aeba64bb0daba207d7f2a2c504128350b274f304e1f8ad3bb4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR6V80104291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26006add8876702bda02d5654fc875428a49ed4995b5d51d18dc95c0ce8b6c64. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/FR6V80104295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2383e150ac879234335d93c9468b965a3d5f29f47ce6fefd3c4f67e8f1c4169b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V80409381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f62723f8729a44a369a55f1c60a0c600cac0f6b0fdea116017707b630a1e28. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:17Z), 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/FR6V80307823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a4f70b4a3ef54119c26be3081f21e9c93a3cfa227d04c5b90394e689abff7d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR6V80307824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3b65309773b1a8c476018d4b94cb0986bc4a01bbefa799eeb14994d1b3f726. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:36:45Z), 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/FR6V80307835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8749d914ba201fadcbdf9cb296a0960a6b322dd856fc858e58df1585edacd821. 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/ITH830800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b9a01ededa90e165fc9f930db613e0c8a2d47610024a4d51484d4d780eca00. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITH830800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1f8f7daacf08d082b208cccf7013b1672c61097bce4e15f99fbe3ee6bf05f5. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ITH830800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555bb95b020b36dd9078ce858dc4cd4c0f97a52fd54ddd07e110e35e9c140d70. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITH830800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9093421de483a8ec8cb0452b93050b0adc16d77eb6d7204f6bf5ce02e5031a2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITH830800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecb48e7c555f9bd9dc5bacbc0a2821b40b817d2ca943fe3dfe116133bcd3a25. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITH830800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7181c36b3650a0ee738a788fb86914a453313bef37a3dd617aed5c35265bfb8c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITH830800190.