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 0x4db0a49e3fefc0605ed5ae580bc7a801a159ec0b19b2957956fb6465c9b73c1e. 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/cb706b87-a202-4ecf-9a94-80eb7bbdb70a.json and https://artists.proofprofile.net/proofs/artist/cb706b87-a202-4ecf-9a94-80eb7bbdb70a.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 0xdbbfca22d6cdefa9622b446fa1349695740c2423507ad615c594097b97d1041f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FRX762206485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b417c281b4ff252ca5f76324934de688654df3430a23f93b19b03b747e2957. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:44:16Z), 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/FRX762206488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a7cd7d1b8e5f0f0fa9f330e0491dac9e3e4eec7c27a24b03c7ca341c6315b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX762206472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601c4280c05db54492ea1d49f6d76f0781624c0f50cb51a3c9210b44604ea727. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CNF182103247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecfa31f84e1db0453400961ec6d42eadce9160f29fa8581e3e5844d211640d3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CNF182103245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9928a41bfb89e756fd5b89eb7341f8d3b8282cdda10d968a934c5cf3a82014b1. 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/CNF182103249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bbeb0c8ab443e2b306c469b47ccddb49e1c9dcd66a3f123e5e5b0a99fc177b. 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/CNF182103251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a32ca48261d72fb46de040f7dc8d092e6c90c0162de72da1a703cb04a7736. 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/CNF182103252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f1f8c250534d524fca626a9683711526e2815c0aa1d29b9c3547859ef43405. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CNF182103246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd6e7237eee8fa70ce6104303a3c5e23bb91b51bebff2f83d30d462114d7266. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:31Z), 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/CNF182103258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b6f6842394e045e472489368953456e1255e9a7ec199ab495e44a31995ef0a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX282381469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770ac12cf7c8fbe7e8dc10a9ca182964d7689b7e64fbc834e5d95bd91f4f6ee2. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRX282381471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5f303cfb62f09e1b08de8dedb42c412d03de1111c6c09861d1be5ce6da4df2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX282381473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d4d35e646dad3da7bfe774c551b488b0ace11567299402b7d786dea40b3d36. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282381474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e117e0a3605cbba400c2d5909b53ac867791fdf06e081c1872bbc3251df007. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX762430019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926f998904970a5d1f11f23618d0203b1c819e8cf4cf55626a52cc21c397739c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR96X2532923.