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 0x8beb028f865ec305f4425ef05fd180c0ed364f188078336801636518d2304ef5. 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/cf5b4105-c170-43d7-b43b-20c7873ae655.json and https://artists.proofprofile.net/proofs/artist/cf5b4105-c170-43d7-b43b-20c7873ae655.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 0xb08981259d9af65782576eacb560b9dcdd96c56ccac6d956adf1102f1b8b70e1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZK6J2416858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f918b76fa78c80f21b3af25a520d8cef53a42d467327a0adca98a6606adbc44. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTBF2428348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09694b846bbe73e242804fb287f09596caf5a131e0020ea501cdbaa092b673d6. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZWFS2416527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479a6b8b7877ca2e01e69f950cb79b7c1427f3d2e65ce3d3bdbd8848a76d1bf9. 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/QZWFS2416528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff53fcc390ebd13b62664ccbbc743ceb641d84987ec79ba227cfdee46e862d80. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZZ7P2485951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bf591c7e3aaebc3c0a92eca1d5c1002ae143b35f6831805cf89c4d1a1d8c95. 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/QZZ7P2485954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe374ae3405a728a4a4a12f71f7ecd07165e2ea156b42340344f4964cbdb53409. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZZ7X2402786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dbe560fe4656308bb4dab519b7aadf13653a77d89bc240f3bf243d0887edef. 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/QZZ7W2456764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770bb610a03c9cc55611a15bcbdb5a84d1838a338c76ccaf75fb2900425043e9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:53:22Z), 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/QT3EZ2404506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd95a4db1d25a975d4acace212442c0f0e2face2721696af4e218e42ef03f630. 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/QZTBA2544755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5aa894d5a51e493326ada74b59d3b32a24006097914baaa158079ed25a483d. 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/QZTBA2544756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b470684686064afb42327f520a7e45763fa5e0f5153cf934fd5dfaa0bd6c2d2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBA2544758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42812103bcb6a96a54971ce6a03cf644abbf8ae2fda1e58be2810ec23f0c0a20. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:46Z), 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/QZTBA2544760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd53fecaf38b4690349434dca34e36d7bd4737f4bd520502007ee12d273262f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTBA2544762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0070ddc9c1a6f9d2c214890494681a06e0d86b061da8bbff7a05102936090588. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:40Z), 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/QZTBA2544763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66fad243b88a2f052d865d23c681d18176922c9e7807701c969f6f4b6415091. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBA2544765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8af7d9183e0e4bc0ab1151ef6c700cc48a40dcca416be7809d6d316977ee79. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBA2544766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3131f903f7161398e2f43bb7b01047445b61b1caa9bc576b8e80203645a38b6. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTBA2544767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae36f03499abbcce3aa4509740e13db3a2f6ca7d0968471258c45807e5b2933f. 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/USANG2525220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53949a5a857aabbce31189f0ed03c747291bc4d796d43e4e41bc7f58f19e707c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TLVEM2467942.