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 0xe41c6a86a56f4f4b9e913b1f1fc8402cd386efbf43b5a254919a1e02a23f28aa. 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/2b68b17a-80fc-468f-840c-f241aa7368aa.json and https://artists.proofprofile.net/proofs/artist/2b68b17a-80fc-468f-840c-f241aa7368aa.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 0xb1afe62d2360969ef8464a04872ef25816473099fd1384967038f931569a60db. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:11Z), 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/KRB922425606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09072a11010fe4fede5dd638fdee7b2c1b32bcff957c9c6d4f65713bd6982bcb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:12Z), 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/KRB922425607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0184ca93dddeffedde3f0023cafa06ce17d8b3699f63194794c38a2260dc09f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:48Z), 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/KRB922425608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6273012cd8f1f6a956abbd8ca9a1091d716a200f1df3ecaf43390dc563cb067c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/KRB922425609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb567407227fbeb15eb68eb1bab7604cd4ea8a9cd1d29ed83ac145a57c7864089. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/KRB922425610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a742c89d394cb02f5f3483aed8a9c65d0c7babc3987924067c832b11528c08e. 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/KRB922425611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa51fd3b68e64aa1ffd216d19eb96a22d0017fc0e21223548069ebb4888f3a07. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRB922425612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bfb45a23b91929d674d198a941fd687abc970cfdd9a9e07108f4e8f7c20417. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:41Z), 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/KRB922425613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52254d88b88f79476eb55539eb8879aec46bff47fa375cbb78fba96dffd78416. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/KRB922425614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e88e6a7e289d129233453ac32bc8ebcb63981650f6daf81edb6da152ec3c8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRB922425615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b69786cfb8d484791af6fbdfd8d9e1e00fd60d20e4918a6367f0cd0090c37d. 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/KRB922425616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349e5ee80ab8af5dd3f405b3bbc9200b0e61d2bfa2f8267842cc627b95ae92d4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/KRB922425617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165bc8f88b5fef16ffc485fdc20c4ee4aa4c9b20d7a2f824b19b4a637d9bfe3d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRB922425618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cdebde43e2da4b71008c22a1c1ba883a82e2a763e8a48467a6083fb02af73f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:42Z), 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/KRB922425619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f75376e753df7d06c3ec42c3e2d6917e78903475ea56d89247602cbfe33f20. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:16Z), 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/KRB922425620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c6ce7b04f938aea9d219f29a06e8131cc6d97ee1dd8852f5800d7903b2c491. 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/KRB922425621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680de8acf3698a3fbe5d58d3e3c6b27dbcd53d768f82010409301ee7a29df6d9. 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/KRB922425622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d06e60f1d2bb282514602f69afe8e3d422694bc024f09ac899940b1ede1c30a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:47Z), 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/KRB922425623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2359fd573bc5c0c00cd59bec4cbd916392a685ab6c0ba442ff55d71759d374e0. 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/KRB922425624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6ee5e00332bc0a0eb810b6d3d99fe61eed98490761363e8e5eb568ee6fdc91. 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/KRB922425625.