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 0xf2ad60ddb0c0baf0a5f5d06ec198d21703a2044ca7bbd2827d6dba171c12638d. 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/4de1e51c-23a6-4eb8-a885-571f31299b02.json and https://artists.proofprofile.net/proofs/artist/4de1e51c-23a6-4eb8-a885-571f31299b02.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 0x06999db2b3e2d497edaaa50c0a4986d9d977d01ad666ca4bd1a88bc2301572a2. 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/RUAGT2470673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a3cbc19232e36648cbd8a005078ec48ae3e6eeacc70af4b02af258aa8b0ff. 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/RUAGT2447821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106802eba6df1893dd4a7340c9ea8c280cf93afadeeca0678043c709927a408. 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/RUAGW2400993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489426f6751b50f3f387d339a432e72565acde86b8a773609713bac744e8af06. 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/RUAGT2420368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421877d1f9b30e2b6e9519a7d42e7315d235c22bdcfd317eb2dc3a87d26e780e. 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/RUAGT2401289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec761f528eace101398186dcbaf465d641c09c0570db236c283540b6599c0f6. 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/RUA1D2476633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae99240d3dd53dbed87a46c5a50788e32c22ed2bae23b1814d66437b9f5d28b. 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/RUA1D2453704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fcf64eb436d3bb28285e595786209fda0c7770f9560ba676c9184722d8a9c1. 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/RUA1D2424911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cec7dc9c46beb404ad7bfa4da38102decaa78b6940d9bafd49f6179e339bae. 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/RUA1D2407901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60663e09bc56df119690fd47af127a8431d33bc0a0f10a5ac46e9d95c237a80a. 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/RUAGT2371240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa9412144521bf28703270d5368188489b6822fb93e529310166000e27c8a81. 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/RUAGT2349829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8796904e62f57267319871675ce09ebbcac1f55fdcdf6a1e00d15240802efa66. 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/RUAGT2324710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8ad4d393fd8488554f14ae203e7391b9bdbf75d7f8717b8c6e3828b10062e0. 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/RUA1D2393415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac812b56fd0d3b7a5f097479322b8f872adc0f75ca55cd12ed04fa1b3920c99. 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/RUA1D2387325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3390dbd300fc75e8a313db5fa41f5a7848edfa81049b869fec627d852b9ab6b3. 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/RUA1D2373821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba692a2fddfa2983e1e84be4af249f085661bb49e3634db1712cccf76d6455f. 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/RUA1D2349624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28964d3825604df2089a7d28eb9cafa65e21662cebbb821bebac15a8c8c594f6. 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/FRX282398721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2098557a23bf1719d25fc5b86571d628aecadc71a3e82a6be02a324d074dcf3a. 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/RUA1D2326944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549ea6c23ab75377dfe8a08d67785a05690991ad9e9e7c238215526be1465d5. 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/RUA1D2313397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc173a6241712eb7b97fe26d6010919cf8d2b719d29b279c2e0ac47c875c55f. 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/RUAGT2224793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6463ba82fe02784ecec13959c5167a318f1d6b923f01af3743413cd6abbb6c. 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/RUAGT2211240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2120e21a9604e585828b4806f7f1ee579595d9e0959f2b4e24df01cb9f4b27. 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/DGA062242712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c7c980c25665f50518e98e113796384d2363e1c50dda2e3c645a6ea491d826. 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/RUA1D2291173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5036d1cec93672e495aa833df17f0407eddc3bb60c482cd2428c846c1bc9c8f. 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/RUA1D2254741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17c032dacff911fa1017d79521ea4b640043a02f05eb9cb6b3149c0a82de304. 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/RUA1D2243354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae0c622ceaceaa942530d37adf5ce52b99c4391444ef716dbc058e047b360d. 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/RUA012101549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c8dc63d4d7672bc3361aa958559f0fa61d7a8a3a8d80269a9f085167cf1f2. 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/RUA012101472.