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 0xb01082acb4c5702436b50e32e9789637600da6440fb599631f401258b30037f6. 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/0bd1d7d1-51b3-4be8-a94a-abd4208a9c7e.json and https://artists.proofprofile.net/proofs/artist/0bd1d7d1-51b3-4be8-a94a-abd4208a9c7e.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 0x90522295b76a27149ef86cf7ec335302a550b142c7124bc339adabca766f44a8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROHPA1900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee465abf339fcd7ec52f51e0c482e766784d3eca138edc66fa884be0cb6be9e9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROHPA1900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b7bdcc4aacad702d4c7ddecbd1074efaf46806d6b46208f49999ecf4c8c78f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ROHPA1900449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5c989f3f2d0a10491a4f2b96bf7e897aeaf0e4d34bd778fbcf91ab59c7cf6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:05Z), 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/ROHPA2000461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34e12e0906a517e2d49838270611a1d2de252756d66933cd074b34578fba28f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ROHPA2000557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a111787ace6d78c4f9dc00c9610e1964654428ffe9f490dfdf41808549a484. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROHPA2001431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548018fadc02785a84df0c84bbc07dea0efc99df2781965dc1b626e6509b7bae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ROHPA2101452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c37a067c5d268e982654acc65ed6a9bd7a62b5c1943db04bb88a644055553. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ROHPA2101455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652d40433bca2134579c9ac4b4f6c27186218a8b889e2dccebdbac37b755ec3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:21Z), 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/ROHPA2101784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a83186d3aa36038dcf91bc41a1cb8ede4690e7568b5e8f5059212e99100334. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROHPA2102283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7fb842c811ac8044425b5f4d544748aafbeaf40b082542a895e7915532f0f. 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/ROHPA2200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62aacfeb2c6bf7cd5ee48593102e0e7465928b8350208ee468a900927ee52be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROHPA2200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70b6914408b7c4781b672eb30a3de5aab98c628515e2342e2a1e7154e82d353. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ROHPA2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1686f6b4c0dd0084a277f0721c442e44fa53af67c7fe66b97dc3a84de3c27ad. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ROHPA2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11411ff3d47f26f523e6ba74cb316ea846c6b3f10ad24763b25c040ba6880b91. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTAY2373491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5d7258150bb6bdfd705550f8d368eeb3cb59eaf03719d24cca5b8bb9c19cb0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFP2389590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba2f2aeedbd4352a2dc7f3f16e090982dc9079ef1433f9078c3307cb55422a7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ42473858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa926b7383010aae010f04be8fc7e532da5c2237ea2ff644586b52d7e82618d59. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3F62581455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1ba25be7aa5d7ae5239a8874faa9ceb58e052ba6a3f572112a6aac6385a40. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ROHPA2300037.