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 0x78da77053d62bfdbabde9e530ed14e11d3ad5a4dd4930ed5e842971be827a948. 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/30b508e2-acc5-41c8-b820-e120d97e2127.json and https://artists.proofprofile.net/proofs/artist/30b508e2-acc5-41c8-b820-e120d97e2127.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 0x626ed6f1fa26d92be71938d13050f532309e647f8e346afd34c59e192d3d2982. 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/USSP39017685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e78c26217cada22c783fbf5be454db103009bc225a1881ab585c399c0728fb8. 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/USSP39047476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7725fd3fe0f999dd4d32bb9ae727c2a0bf8b1782d66aaff7e4df42de23770d4f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USSP39047477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab145c2650b92d2eba4f2791ee39098a397a3b953aab549c70c6e696a62cb9. 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/USSP39047488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e90a2411821b0ff11c78b5d642cc9caebb3fb4c0ca56c4786817ea2f0de1ac. 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/USSP39047484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae036b5b736f9bbe625379938e4bf5bd62a98d14f969d718d99ec921d147b64. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSP39049823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc820507e1f47b9b853b1064b2cdf236c8988c663a48e0b53e792b46c518a5a5b. 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/USSP39047479.
And Suddenly There Was With The Angel/Glory To God - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66e224fd6abb8ea96deb2ad8b1cd4ce3dbd98c753450273db3e1b981bfea441. 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/USSP39047482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b435e6d8306364680916db7610b530575fb8b81ab22bb9727c37a42d2845f45. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSP39017691.
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 0x784c5e1546cb47457b377419f1e8caed293799be1fa90ec16fee55ccb09e8908. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSP39017695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2c4aa19e966cc455258b506062b01037e5e9b7c4cc0e61569e6ab35c68467. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USSP39017683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea581dc82c60df94b83ae1124fe09b016877310fd82fbaac627f9190d5a35c1. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USSP39047485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7270023214295caf94fbd973008f838c710c5f561206880f47c60762ab6055f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USSP39049794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc902eae178590a801093975db0fccbc0226e4210b16c2687c7aa93e58d6b879. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USSP39049797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9263b5f854c714870d0144678765dc16d2693046af8601abcdb9493f73b074cf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSP39017687.
Behold A Virgin Shall Conceive/O Thou That Tellest Good Tidings - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c8f0bf7aa8483a532b2adc44220eaefdc59bdd3d795359a999f9c7a5fb71b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USSP39047480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc7188f7d903137bdd6cb5519ad805ffad8c36c32a0d998d43071763ad51137. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USSP39047481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd141fdbe1dbe314eff62dde17d5dd6ff6890acdd786c1b78a442c3f6d4a3afa5. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USSP39047483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b88573c225b91e55f3b3d81b084d5ae5b92c8c41bfe587cd0cda56b5204d47d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSP38859872.