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 0x7c23ab1237fab4e07c23f1f68e443f8578386a1dfc5dba95969f1e8a08377f19. 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/4ce6b6a2-3e38-42e9-adc0-0087f6a8577e.json and https://artists.proofprofile.net/proofs/artist/4ce6b6a2-3e38-42e9-adc0-0087f6a8577e.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 0x1036e9459db5377560701dd372e3866b0845717d6d948946ef189d4c1ef340c4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGT2307096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971016e7be7e47e2d2a14ea18b5e1072d4bd141248b3a3f7ed96f797c3e467e. 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/RUAGT2349812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab606843b0f48fea51b895196a89040a9e8cb6ade6378642c309c737776d40ef. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUAGT2370596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf5cba530f371009bad891ccefbf214e62fdf7208ca4e07ce8091251661130d. 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/RUA1D2408679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6021fc334e766865101a20f64fb87e47e6009144a54d66c89f4a869eb58ceb. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:26Z), 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/RUA1D2416052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c326c866f2ed898fd1120eef510f0370daa50d49951da4af01f1435284602fd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1D2424731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96bd2f56b3014c7c6596ba4503f2375f9945dea0baa9a57069494c0056f3e85. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:26Z), 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/RUA1D2447656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8930a23141635834ef33101dc7af6ce32ea380140abc5a0d538b1295038596ea. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:15Z), 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/RUA1D2467258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487e0bfc918f12f8ecf821146379b974d90e0355aa147e09f9f6e295d72c45cc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/RUA1D2488648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd464ccdde8772f4ff2ca90a7362e85f50ef58268fcb00401062c612002eb9ec0. 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/RUAGT2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc728d48015bf0da1f9e6195c843d20a699828435360755075e83a90e7efbba9c. 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/RUAGT2415318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceaf1140bd87a76eaaa0ed882023200b8bb743141f53929b9d4f0962cb7ca79. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:03Z), 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/RUAGT2431293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9249068f28fef819d8ca5c24abec6dd65d319ba7fc39b5462e09604bf03ff4. 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/RUAGT2475332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef03fffcf231c136fb2a429c6a5fbcc9ded02210721ef2e779c3d9224194528. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUAGT2486226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9e9dadbcb39511702765f13f75a7e36a57a3b9fcf9eed551d4165f375ffe33. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RUAH62425028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ddd8fec6d991bb58a9115912849980333ca72612fafd135cc66cfc53bf0117. 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/RUA1D2542279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f4c60b7b620e409e80912db80d35265b9ffa397b8209f9ae809d9fcb1ebe30. 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/RUAGT2511306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b5ebdcafa0086afe23671b71ac222dad97997f74c750ff3a2f711cf488287d. 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/RUAH62509400.