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 0x70266f043f51b9355fc329fa8d487cc5446bb34d5960979a3bc998901ed9fee2. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eeacbe0-31ea-4b59-876d-f85545a122f9.json and https://artists.proofprofile.net/proofs/artist/2eeacbe0-31ea-4b59-876d-f85545a122f9.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 0xfce76a990f82877dd8be795de223929028695708757b23b056a052c9c7f9394b. 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/AUBEC2579544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6a37c78b42beb79fe5b2c5ef79ce5bd69cb3108ac4a38c88c3c6730c634e9d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUBEC2579545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f003598dd39ed7703b1a7f014b5354a0cf200efdeef9d277807c1351debf310. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUBEC2579546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20157deed4f1790c9d30b134a138b7733a24ed7eda2fb458c70cf30227a24c6c. 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/AUBEC2579547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c67fde666659ad3a5c568d4c0dcf795fedf5f8378da465099f98419db10c43. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/AUBEC2579548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac66d5864a8027db517d52b9bcb81e8f1fcfdd733b6a3b85e87edd0bb877416. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUBEC2579549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fc8c9e009a9f787aa32bf4ea4c3f3a3985185eec2213c1252020a5136ca971. 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/AUBEC2579550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e95a621e0b6788f9671c1ef9db135bb219837cba708b62950ce5a4edf3b3f6. 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/AUBEC2579551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dc2e6987a6f4f4fe61128b8b5a2b086eda8b7f0a5ec9bb1e1785a277823260. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AUBEC2579552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba84a5f07b9f8cf0d224b330e57c86405bbe535fa9dada8ecbb0f939a2e61ab. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUBEC2579553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3992f3d19c18f3bd98ab1886a49ca6a94975ead50a91a72999c054fa1eed68f7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUBEC2579554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d5382341ce803ce9f2c67d3c855fc012b47e3c6ed1f838fd2e974e84ae4a5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUBEC2579555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eceb58410e1dcd5cf341186dcce163e4a5e7bce3b822ae0a4a8519d3b49d947. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUBEC2579556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdd71d87592fe27eeacab9f1a7aa34d368498a666827805f19054ca1303e45b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUBEC2579557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5775385bb90b5c89172ce5a253e7a2a0edb39cb3498dea793b996c12a1aa92. 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/AUBEC2579558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f763d74a671d00ed1d6426ea5241b8b60bd516eadab3932e73cded3f1f2556b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:15Z), 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/AUBEC2579559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e28896e6dd552647370f38e307c026825bc34869875459daca34b5296669ba6. 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/AUBEC2579560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80822024d751844b66cb1a6f0e17b4d170a8b38c8de9ff8731e1dad7aa56936b. 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/AUBEC2579561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb469651fa5027ee2450a8ec1feb6575f77d39267a9a3bfe4ab6af681e86c2f. 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/AUBEC2579562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db5dd2cd728d42e7863a7f6e7af87431434537499e364ee46e5b464623e975f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUBEC2579563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b236eb8927ab8a34ca674a43c69c3d23fcdc2be3d360e72dac7110758c60808. 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/AUBEC2579564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c52eb0809232c9a4d0f675822ad5e43010b44ce5a203731f5a203ccac08f5f. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/AUBEC2579565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d55987b8474b2935de91241000571e7716cd9ba6571daf8e1a681572cbcd8c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUBEC2579566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e60e084aef8241320848fe1e4f0ab7fee36491696e9d25718aeb2209e00526e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUBEC2579567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa56c75ff71247dd038c73e10d6c33a3a82a2af34b66f4ee57508bedcb863a08. 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/AUBEC2579568.