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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044583704ac83985361cb82bb53636c09d287984830aff44a244cd2b9a990d78. 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/f9cfb4a8-8317-4250-8397-f34a4bc49b62.json and https://artists.proofprofile.net/proofs/artist/f9cfb4a8-8317-4250-8397-f34a4bc49b62.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d50b34f5af1904961af7c800836dc6e723caf6624d83c900498b86bbeb0156c. 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/KRA381900631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49104210fbc0004fc515fe4893e406aab31ade6df6dbfc6ab9f38eba0f6592ab. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/KRB472000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf54be8622a847369b999a4de11f3cf1e55ff89b9cb1c08ffda8c415b9afd518. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZF452004979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484793cc9e29d1c66927683460b0338c516f46be914f2557d675ca6fc8953028. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QZF452004981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba811bc535ba57cc6b867fc3922b6db66ffd7110a82712d33d37fccb8ee3546a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRMIM2102012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb96105f0665c4f3b86a584f0d061c7e63a130c0edf841d265a488775476715b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/KRMIM2108054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca8c80afd701c6259e435bf973ab79310c0daf9e617ef5e9a2d54f223a605b0. 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/KSA002101385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1074eb5418d00b3fe7dac61dc9c833ee86f4c2c3c06b85fd1f2ae30ce62a0b83. 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/KRMIM2214337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc432f7626d3d91adc743079ba6618ddd4148d309e2f30bf9ac999f70e4730273. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRMIM2238765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501ad68d3b59b1194edb2d41bb3f671ffee07626caa4d12112801a7a2a3c80ba. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/KRNAR2205854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e2528625eae522b1e1e70446545400acdfebbc8a1c21761de3fec1bc44ef3c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/KRNAR2205855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda66f0699c298631cc979b3528ce055a5ad77234e26de0656d6d98663dc60c61. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/KRMIM2301176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751c4a6075b4e498750bc332b9498bd062aa0d7a6c22fd5d9652b53869cce31b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/KRMIM2333143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb892e0fa353379989d112cc55094bdaff5efc25e08bf0232e1511cff0a0ccfd0. 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/KRMIM2335230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c12d3b95c0bc085d74daa11096f9a2fd4b68bdc2eeeaa0f9ede9385e263d1. 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/KRMIM2359175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651ebe66278559469be5acaeee5c60aaeac12b1677223bf9e9024b80c7843d15. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/KRMIM2370138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0955ae7c922836b422e9ad67f3ca6334f588d0f7576d1a2ac84b3a8aba81f236. 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/KSA002401130.
I guess I knew this would happen, I knew it would be like this
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf847a282e474e24cb6f7a1588f24e9b50eb6b515ea037ac6a6b2f7511ca81146. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/KSA002402007.