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 0x31ed36738a29d9346bff0c0b108de89619538dfd923fc76cce850764f2955416. 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/0e77eb1a-4233-4027-bd57-1466e796adcc.json and https://artists.proofprofile.net/proofs/artist/0e77eb1a-4233-4027-bd57-1466e796adcc.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 0x4775ba13bfb7cae62b02520b4f20dcdb4d1d4a22c864699a4d8c18e09b05ab7d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6SA2316433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa417dc277772969173013b22441d189e6c5d2e8c9705c2b488a73fffd2d2a4c1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/PENMS2302066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e72e6167075e98de542802fa843578770efa0259e19ae992b1936ac8ae2e16. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PENMS2302239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f6dbbf17eca50bacc76d5bc57b66d54118ef5574935103d6bcae546561b61. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/PENMS2401847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33225d573ce58bad7bfda024af5880c1e3a9d8f3146e26e72668b3cebc520fa9. 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/PENMS2401844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64dbab1193cab66dec2179c70d2359591510fb3c36b05023b24f7db6deb19b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:18:27Z), 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/PENMS2401842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644c2d5e6b6e04515a0534130240473fee8bc3d577d4a7e2ca919525cecf823. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PENMS2402548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d747b00c4472d6a9409a4a1399a6e4010a159e25ddcb3c789a02d03757b38c5. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/PENMS2403013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434252333226556df1c3e283395ab60fe5edfe7c1b7890d677a11294521d8155. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/PENMS2403733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3c369df3103103a1bbc9b258a8a5511cda2eb37360cdceef010f5afbf76866. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/PENMS2403737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1558a13ced1740a8fdf2480986b237bf3e3cdc481574197f39c056abab01781a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PENMS2404043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc76322974d53a36b72a354fe8b828dd90bfb8fd36bc3f3f067da41a048e8f9. 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/PENMS2501114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85eafba6bdea7be02c27a13eb446c3c789588ec00ce38d0bc9d2150cdb91504. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PENMS2501126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630aebcc2acfee9bf4ccd682c5418fe088493453d7aeaa03520cc3664e32fb9b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMDA72599783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6bfafb1ed5a53b1100f4b09ebd8a2dc8dea37b419c0041fd30d15e958cc36. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMDA72599766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86897c6fe2bc15f2debd714361906aef20d55a17c9a0085ef7159cb81d9867e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMDA72599655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd666ae9e6b5d24a86e61dfd721db4b0c32d093fdabf1e53f3b56290fc49d0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA72599733.