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 0x62848859b6513248ed4db042c5f47e079942dfd6399051bbd0f0e7877b188321. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76216528-39ed-41e3-ae46-608e130fc77a.json and https://artists.proofprofile.net/proofs/artist/76216528-39ed-41e3-ae46-608e130fc77a.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 0x2d6f2ec9a129b89e3b977bfe05454f2ff9ed1b7da0c39f95871ebd24047162c7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE5Q51810764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb496d98067aef879cc84e51e29cc6f1466c9a03f9013207d855baefd5db787ee. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:29Z), 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/SE5Q51811052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423c6a00a32626b4dde30ed2858610d494ecb344936c58adcc35aa10adb5e841. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:07:25Z), 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/SE5Q51810468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4882dc593c73f9c668cadc204c7808d1414e947e48fc29dc2b8b59580cb980. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE5Q51817870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145b25ff3fa45fa922c23b478d848f2aaca39614f21d9d2354428faa0f4fb56. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE5Q51803067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67892be86f3fa63f19d2186ef6620c06294ccc2865744f2f5ffd78b35e4794. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:40Z), 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/SE5Q51812524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fec122cf20c003c2c22d9a07a88609ca401583a0cb1c447f8d2420becfa760e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5Q51815452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f48d9b564e44cd7df9555f33716793128782914a4c8a21ccfffc824246e22. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE5Q51823981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfaf99b1f5ed814fbad7c0e794b9f93cbc99d87c2b3b6c4bb474107a235d128. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5Q51815082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656211ddd22b83188183859da378bff270b594513ab2724706996db716e91ad. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE5Q51809971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6d129bcbe4555c105db1c5ad7107265a1ad4cabeae6f13aa2fbb3a5c62eaf0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q51808188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc926ff971453b81db134c5df003b0f8f878a7db46787382f6be3dec514926f24. 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/SE5Q51802507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860f2a53e5093c032d177795f97bc64e43f70f6c5cb963b94494e26777faf211. 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/SE5Q51806424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb1c144a5d297ffee4dd973f17caf892ce8acf25d0db8be1a7fef66f6a154a. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:54Z), 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/SE5Q51805006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad357eeefc162975df5d6910be1a2117fd466349158fe00dbb4ba90df9d30ead. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5Q51820516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2648818cd9b80a13ff3c43f8c6d97e0330a133f7fa00a9abe3bb183e258dbed2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/SE5Q52002466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7e31bcf61a208f5619c5ab63ff8fe38a26795b5916e2f8cab314ce4ddf3666. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52103665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647cd198a20424c26f6a18ed1b8e7d2a12add8708a2947e24951c28bf6a53927. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:56Z), 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/SE5Q52104112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da132cb8e72ef38031f1c7b9af30c392182c43fcf26cf8ffeb633265d15968b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE5Q52200915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa76e6d8786179cd8dcaf52eedfdc30136cdc22926f434a2cfda0825c0003a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:04:54Z), 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/SE5Q52200620.