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 0x4fae81d2ba2ca2ac3fd28f94238caa637151404cdfd5ac6f12e8a39687b5b948. 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/bb194fd2-caa0-4640-b991-2de20b72c57b.json and https://artists.proofprofile.net/proofs/artist/bb194fd2-caa0-4640-b991-2de20b72c57b.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 0xdf82d32fdbd5f6bcb0faa3e5f25e0887ba243fce477fdd8163e91ffe0e144b2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:05Z), 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/IL1012501350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f30aa83ed355712a15bf0c1dba7fdf423b5b3b30557f35dc8e5b7f4ad1cd9a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL1012501319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e89cfba37ef2ca81bda4ae86b6595f83706583854b7b29d3051ec14634fe46. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:58Z), 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/IL1012501340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7822e56d45ca6418635e9e0ea86f2ccc18cb409b43040fe5e877fe02f5715b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IL1012501316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d1cafadb9aa87b09b357cb51503a6246346fafa8bc204ccb5b0015aa96e577. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL1012501345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4874ceb2be5451171371c840f4de945cf642bc22b8f262d72a667963745c4e36. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:20Z), 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/IL1012501315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8267b8776dba85de24dab709029b7344175e5fadb346c4d1dbb0d494e2051805. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:51Z), 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/IL1012501341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeba6e4d32ad7b692938e399222145c808857b3b31bfd030f994df26b27fd2ef. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/IL1012501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5443644be9272da80430049c9ecf0b04f5082b2f5a9e3d7a9cd68b1f4774ea73. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/IL1012501360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b384e9c4f2448f427e47bb3da6428646ec5d467acfa6027d146645bd75a883. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:28Z), 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/IL1012501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112eece28210bb7a9f5b30d1a58614351e4c1fe394615a3dbee054a54f355c22. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:43Z), 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/IL1012501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8e11595e9ba6d1d0aef8c08cab26efd53fbd4d9222881a77df745496cf6783. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:19:42Z), 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/IL1012501328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e59fc3442890c5e97c2e180e986d49b025287c62a1f87d28bf77929363f000c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:14Z), 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/IL1012501351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eaa84d9fe04b99adcf03d741e777a779e57732a174567c596845cd918f2a6e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IL1012501324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0e849b974270ca4de6c79eef5d844f33f876383868a24bc8b1086d87e1bb3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:29Z), 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/IL1012501343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0dfc24c7d25a6d4acf21c756993a4c7912357f21144d343c6dfab65486dc9c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:29:47Z), 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/IL1012501320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b5e2e565c7621694c8fb82bbeb8ce24c7aeedcd1e69d1118a31802755d2640. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/IL1012501347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc98a5aa30e70cdb2994ff969159c397fdedf1a7470ec108e0b3683910a3c038. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:06Z), 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/IL1012501344.