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 0x140b650639e102a6deeb235e5db1e99a1e1a9c033ce68d026d9588acff434a0e. 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/364fb69c-483e-478c-861c-16e6950ea07d.json and https://artists.proofprofile.net/proofs/artist/364fb69c-483e-478c-861c-16e6950ea07d.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 0x703372479a1cbd7a06d82aab26d20a888ab351ff7cbd1467d088aba87d344781. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:45:57Z), 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/USQY51024595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b81b2ea75e670fd06557bc49165dd8fec4aeddf3729b07bcc9abc59a96dd56. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USQY51024598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32c10acfd5c06de8ec2810536373c8ac0be6e723b3ce1f2640499c0a21efa8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USMS29800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ebc8e78dd54a236e6ce9ca9be4d97f419a112007458b1907777f0500b79044. 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/USMS29800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4bb7333b1a7dcf4a7ea4d528989952e922d8edf3ee3cebc3d5bf24a9777714. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:33Z), 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/USMS29800182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea1b75fc1d5a6d6eb783aa56797e3e77f5b05ffeb4ad5fab705047bbb7d530d. 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/USMS29900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23498d5780fb0587a01cbbd9ae0188ff0fd2d466909c54fd38e84e475a3d88fa. 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/USMS20200461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e6eeac04bcbad8e6e39e2832385c4c614f6ff35ffe25a56b1d0b7f5c6c0af2. 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/USMS20200462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94d61a8c898df18b10ecbcf85f9a6c72c629df224b175922749a70d088e2839. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:14Z), 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/USMS20200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348bd3e4c056496a659e51932d93c72b2556fe5c1bc461cf7787cffcfcb4aacc. 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/USMS20200408.
Drop The Break (25th Anniversary Remastered Deluxe Version)