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 0x7f57b217f31336b4eba48d7a772b004035122efc9534c7240fdff65b7e83d6b2. 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/b1f1bede-d6b5-4465-8365-f102de5a4cdc.json and https://artists.proofprofile.net/proofs/artist/b1f1bede-d6b5-4465-8365-f102de5a4cdc.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 0xbecd242fb17c6a066dfe0b31d7b18174d70bbcecd8d7746341c243a4cce738d2. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPH941001059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb0e17b11df40cf54c0e1e7205148ac2926a38d7ffb055de05f344f2449d25. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPH941001077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ad3dbc75b8394106cdd27b8d1fe01e2185d61c229f66b6c89cd46cba18187. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPH941001079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab382e55f90ce36e052cd1a1819501d3ab06c5709ebefd70b5a96753c97e854b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI02002877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f0da0026d966afd376fc28318237719b8a4b8c7d5bf8e6df4d84473007c7b. 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/JPVI02101203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872a234d6d1bdb1a86961ff66a25ae34377e0d92522c33e21b30bdf3bd00c2dd. 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/JPVI02101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f0da0026d966afd376fc28318237719b8a4b8c7d5bf8e6df4d84473007c7b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPVI02101203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186c39ca0fc9915a9ebbb30995e9dd37d4abd7bcbf2463c4298e85993047bb76. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:13Z), 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/JPVI02103347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5a7b4e1cb49ecf2f295f2ee47f121b5d5766e3c9ec2e27a30a9ce9ea81833. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:10Z), 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/JPVI02103343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bc5ec91fe5ae2a187ab6ea024ca8e4e48a970bece9fc25b9a7c062701ca887. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPVI02102505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87eabad7abf8a8e94121bf5c2bbd931042c0a233a27bf7361d31069406958b1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPVI02103248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8953c1a51fd0376ba9314472993e605b94a0631d44b1372b285a40769c4b4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPVI02102506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9750fec44464393e2454fa528b5d91bfc6dd477581cbe6960e8c734876c217a0. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/JPVI02300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ac5463621edede7acd7d158a3013a0a596a1d63547bf62f6ee852ffec0c2a6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPVI02300621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208b8971603390190ba6ca03a0f707ae77cbfb72a8fea31f8ab7ea534d90b0a. 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/JPVI02300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3abe45f83f108d969b257bf9d0e1b7a7160d39a4193298c0cb2800510cc57. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/JPVI02303230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f96b8f2cf226ded5c1a360545eb430f1d96fd3056dcf3ff62b3aac5370a7df. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/JPVI02300619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105cc26280cbffccb1f6e897f3b3a2110c294cf959b6b15db9b81c290c715bf9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPVI02304966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf871b059db69fa3d9bdefc856af4c8e576fccc7811076d0fd6ae9a1ca1a5ca25. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:28Z), 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/JPVI02303612.