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 0x16814989da002c4b827c82f5a56aa6ab7f0a3a5daae84b514ceff277dec53cd2. 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/3929721a-77cc-4450-8c6c-061fce2dc054.json and https://artists.proofprofile.net/proofs/artist/3929721a-77cc-4450-8c6c-061fce2dc054.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 0xa570c60310c292394a12107cafa6b2e5fa8a67cebd77802c678848cd8757f322. 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/HKA972200263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb210d0579937b600bd2bd1f443439f09da34a179572cd2fcd205a036a2855db. 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/FRX762361935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610e17672a97ab6aef42c73b792cac673e12cb5d551e342a3ad26d15aa950ec. 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/JUA012207112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb681962da7dbd083713f36c8611e70723825ecebc5396af3756fbc45df287. 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/FR59R2574398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b240699b9c4246493ac160f27831af840b79c9adc9ce31c8382f6e15b605f. 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/FR59R2574399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6dc623276e94728ed7d72fd2677ce381730558966fbada316b411eb3a0f457. 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/FR59R2574400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447a057bf60a47e3185a330be6bb23583c8a5abe88288d83479b323aac574fe9. 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/FR59R2574401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0e082924494f421c1a9c1e4b6b65ee819bfb3a78013882315b4a6293dfc21f. 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/FR59R2574402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442c7fea8612a29fcd5066030368282c6bbee0a2570ef78965955da9d71df1f7. 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/FR59R2574403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05675ff7c817a389a99df75ae49d5998b5e51bdd0018d8afd3e3a5b18e74884e. 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/FR59R2574404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24f0a1fda4a9cc340ad18b43a76db9a3ec56e096ab7ea980bc7aac1cda47a6b. 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/FR59R2574405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9489525589128a6ce8fe6c42827b0a9cf38050bf912c62f268d974af230abd. 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/FR59R2574406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc645a6f313b517ca8c2bad30e47654c4096339dde4340580de20d3780948a447. 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/FR59R2574407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20b958fb66ce4c1acfe55f313c4d4a0b54c7c3f26a3604a2b1fa162b27a2d1. 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/FR59R2574408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1216dd588ed1f8bc03b8dd1f8955be92072716123c164883a27d39a7e3ae0e5. 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/FR59R2574409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530c14fd157b356ba11d9c76bc60cf9f75e382d4eb49ae6aebc4dd1c94e2761f. 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/FR59R2574410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65549f070cb4520fae7916a5ecf9da9859335c6e196b282a66c93a2088f3f587. 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/FR59R2574411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99675d28cd7104798778f9714f2a83daa3ea8ff4635adff966e535942985179b. 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/FR59R2574412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ed89c26efa37dd5e4f403bf8e54326e9e97ef3f43eb4fdb443df669c5bd35c. 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/FR59R2574413.