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 0x760dc837372f95e161d5d690e7cf4991465133975ad053a7424369872e152656. 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/347f0a0a-71d6-4491-8d36-4919d37fba68.json and https://artists.proofprofile.net/proofs/artist/347f0a0a-71d6-4491-8d36-4919d37fba68.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 0xd158bb4eaba303b41ecfa9eea1bfe26a703d49fc8b423333e7061a2f98f44c6d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:58:07Z), 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/QZGLM1940143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e5aa850f34d355bad5f398e57913a8f658ffe5abe55cda628723222443703a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:23:53Z), 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/QZGLM1940144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f96651d9e21db3da200e6162a0cf37a1c2fe55fe546a6d988d7db5b1328a676. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZGLM1940145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5568d3b75b4f2cf654a9ea1288b6564ef2fd309c0a85de2153f54b0e4fec3c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZGLM1940146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d09ea64ca2dfb211588abb43737439af2e69e69b14b41c74ebd36807ee00c8b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGLM1940147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a36dd4cda039057499e086385cda0a098de14906035cad788932ed14f2624e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:09Z), 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/QZGLM1940148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ab4b030cc3adf47112de24ed70031e25f1eaac998f8ef88f42394e739d047d. 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/QZGLM1940149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f337bd8e0658602ee63dd32eb220b7c174e1e8ea8d8f42877cd0fc5b5df3aa. 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/QZGLM1940150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573140b9492134247d2e4967322e4583c612dc7df9ef3775a1a661b9836231e4. 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/QZGLM1940151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc31f57d35e261fd9e9c8c1e175390ecf63f8fe366f8a48d874a1e8498e8918. 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/QZGLM1940152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb019d9a26214bcd56d53f58adfddf587caa6004e2fbd5a5b56d3203ffcfa2a52. 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/QZGLM1940153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd236f8d477745a51eb7fa2ba8ba23d641f5a6a173fbad5bc7d1eae8c4d053e90. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZGLM1940154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe394af635be9dfc9facdd1ab2fb2837f3cd5b875729daa42de620a076cf49fb3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:02Z), 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/QZGLM1940155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df05f592e2edc391213ea627e64c1216a536ce20a54665ac848c448b3fb9520. 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/QZGLM1940156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3db69b828c50d2c45d0a95acfaf5c9f80563cfb17ed53c331f48b2981471ef0. 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/QZGLM1940157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb965f2390e4723d94128ac50de9d28a3d7b7dc81c4c0534e4fd7e30ff7d6b7ad. 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/QZGLM1940158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b94158766a8b6f5eb2f609313df51280271692763c62ad6b55de24db3e373. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZGLM1940159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a55f173931fdca33e294f4274934ebeba8ec7e56aa84b7647cbd3454bf2c2cc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGLM1940160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881a12642351794a890c01c276410df444d4d52114ce5a26a7f9a87f2b0e2beb. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZGLM1940161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1625939b36466f40e4effda275775e30ee10fc447653f642e5b553fae58ba4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:17Z), 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/QZGLM1940163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf436497ee8dca5d7fa5e9c9a12e495ed42b5971fe936755df3fcb18256997898. 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/QZGLM1940165.