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 0x13eb7507312fd0ae1fb6572e73e149d873bfbd00c300910b062826c33db5ebca. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc435fc-c00a-4285-966c-9cf14197a000.json and https://artists.proofprofile.net/proofs/artist/adc435fc-c00a-4285-966c-9cf14197a000.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 0xfaf99cd01d8cc518eaaeccaa8eb03b68c0ac50a9cdeacb944118f785a8ff69ce. 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/QZDQH2412378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2137e95b0300e54da0ad60d19362526381fb72e69e4ee08c72e4f1481cb9e19a. 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/QZDQH2412380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e6a2c6afd1e2d9406236db915fcf6a831a56a17bc0f4de476f9f8a82804538. 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/QZDQH2412385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b62991a367187f9be6f6b7622f5a7eda8e1f44914846e5380ac04d3c267141. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZNWV2472659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b678859e07a833eb9f3e8a0402f128616b9ea3b5f3c01ad9fbfd1cd668d02a. 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/QZTAT2462247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc77a2f621c3dd9d0109a30f33513f14937111c22cbde8d07b9093e1830e168. 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/QZTAX2469631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b678859e07a833eb9f3e8a0402f128616b9ea3b5f3c01ad9fbfd1cd668d02a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZTAT2462247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc77a2f621c3dd9d0109a30f33513f14937111c22cbde8d07b9093e1830e168. 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/QZTAX2469631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4e46ed29454a186f420d4953712dcf711ceb8df242ae6575f3cd0162b97caf. 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/QZNWQ2437168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb103ce2e3a7712a7c8e9894522c850cfe232491da3963e48e1f03deddea98505. 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/QZTAX2468214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbce4771a31c7773a68c5b1be66fd38fce613d09ef53c896354da9fdd43ac2d. 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/QZTBA2491683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05e7c49d475cbc389d527369ca982bdf52e7822eeaa4da8c6bd415f49a4048e. 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/QZTBA2491689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20806467835be54fffce3bd971d881030786302854904e79fbfb5ba0bbe0bbcd. 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/QT3EY2402751.
Ritmo Tche Tcherere Tche Tche (Balada Boa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0e9772693dbcb661b5fb00d254b7c1afccdbe1737a37fb7b8b550d49af535a. 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/QZDA82593711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157dee12ed6a3a3205eb03e23dd34afa6611d756f38d39ebfc21da64b323b28b. 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/QZNWQ2563080.