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 0xb755a3c1eb64370c42c46b2c186e671856548ad8d71ed5810caa0676be741df5. 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/9ad2c93b-0ab8-48a7-9cdf-57d0f9008b26.json and https://artists.proofprofile.net/proofs/artist/9ad2c93b-0ab8-48a7-9cdf-57d0f9008b26.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 0xcd6cbde67c82181b87f3cb27e42ed6dc8fa7816de69f7c374bbddeb332672afe. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:57:33Z), 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/DEQ021808091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485fe96c53a3cc376bae41ddb194d7e365980e8da1b4202e62e37daf607f10e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X42068011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9191e1f0be8f0cd1742ac95439bad2d90fbf2b726d28c4bbdeedd3513c6dccf5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FR96X2051893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe4b058aee6de15718ad734a6724b2a4c39485ea27fcedf3c38db692465022. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX202046505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5851ada7e8604e4aaecb5ce79e423b8cec38048091970c0b2a7369cd7e0533. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR2X42243843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe945a7d20440cf73ea0c4af7bf60118f698c2f4afa9105cab373ed1c52b017f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TX2303484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bb6819f1dbb0dc7572a7eba2917f2fee468a05f82cc5bb6979d03012da7ffa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:06Z), 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/QM4TW2386922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee790333bdb112d6347c845a0c93d27e5a93a296efba802f54c7b34fba780f8f. 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/QMFME2336711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee790333bdb112d6347c845a0c93d27e5a93a296efba802f54c7b34fba780f8f. 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/QMFME2336711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eba16c02a9b087914e6cbfd0b8064a3c10210dcb6b9c51a57b620e5b588a4c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2320065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eba16c02a9b087914e6cbfd0b8064a3c10210dcb6b9c51a57b620e5b588a4c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMF2320065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae17e14a0e02f8450e768cd529f9615ac1ff879fc75438e10759f377e3b407dc. 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/DGA082445065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f439301b505ddca7334d5da63ebf46c99c48e78459474646972618eb34bc1a. 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/FRX202442982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787188d1775bf0c5356cf1977e215516cd36c6b6431145b9b052aaa0c48f5fa0. 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/FR10S2521987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae17e14a0e02f8450e768cd529f9615ac1ff879fc75438e10759f377e3b407dc. 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/DGA082445065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff565febd20e391dc8340c669402eb83ee87fdb0544702f5c251a3a2a8cc424a. 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/DGA062442822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f439301b505ddca7334d5da63ebf46c99c48e78459474646972618eb34bc1a. 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/FRX202442982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d32eb94f6813793413d1dd03a355779edad952ddd82206d8f0c1c25b78dc051. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:57Z), 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/AUE0D2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff565febd20e391dc8340c669402eb83ee87fdb0544702f5c251a3a2a8cc424a. 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/DGA062442822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda771e42a3f8d24d058e0f1ee2ac58e65f1b6334433a155f3e45b15efaf7a069. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AUE0D2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45668de7cf7739bff605c2ca1ece3ac52148dfc183f5758726e0a4e7ce54bcd. 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/CA5KR2317339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c50c6a0500506ab512720f6a2fba07a4b63e3c06a01b72b3e04e76a0fc4281. 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/CA5KR2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945c375ec22fa173bc849e060a30a9ce6681ebe1f684ec4719b56faea8f707e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZC5P1800112.