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 0xb1571dd1353416a04c31c1f1cb87ef7dd7e3fa7005977de7201bc5472dd20a5b. 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/fe183381-e238-4c88-af72-d2c912c35a48.json and https://artists.proofprofile.net/proofs/artist/fe183381-e238-4c88-af72-d2c912c35a48.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 0x571bc1c87dcdb4db2831f69e55268d15e0c4dd96b230b09502f17f08a89ee870. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLRD52323289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b28f633ef3042eda118664c39dcb40509e5c146f2154e2c0fff52644541d2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLRD52323261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e7c29d7fc2a8ae00d35640fcc5785fb1c1b1a0ecb42e6482c731b96fa8f5a. 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/NLRD52323290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e7c29d7fc2a8ae00d35640fcc5785fb1c1b1a0ecb42e6482c731b96fa8f5a. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/NLRD52323290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ba117285866cb8d3d6e678c17c730e11da0dbb8f82d2b6883680061f6bd1ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2336326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af64990d0dc02a59a484b611020f793111511cabdaf55693f186cc21d73201a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGJ2218825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f036c6582b5644a76109d4e90cef69eccbc350d6b0156fdad27d0ee8c876205. 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/TCAGJ2218844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b7e6f5a4e57a4f2de50ab63b4f5b61cc3caa158bbeb9bcedf63ff38224cd9. 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/TCAGJ2218901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9d470d51f09bacf54b0aec92faddd976612d4cf44a053de0bdfc976d23c0a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGJ2218859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c66aedca407111e49360a9bb217737cd85426438c742ae29bcc79ac331664e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGJ2218866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b18de83fce301f38c4219d7a2dc775f8d7fb3e010ee78c155fdc08ee3fa07a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGJ2218870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8258dd4a291ccf2edd38a4081595fc049f175dab4a8bc95f166f98521068ceef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGJ2218889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7785cee258483bee4686baa722924c125118557ee488485eb15ea43a70263ce7. 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/TCAGJ2218914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e845081f1d3ef19710969d999840b311ee4b27f850f46cfe9b387870f24d0f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGJ2218852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc07e65b0d1e59d3d1eba9be6a78b352c0954d00017dbce89f4e1e1fb5b49e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGJ2218923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9929173cf18e1da942b39b9868d697390de204196d0cd80aa29c3f2424a59a37. 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/TCAGJ2218917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc631ab247aa1a1d680357e1815ea750d7fb620e15081f41a40830cd0c8839aed. 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/TCAGJ2218931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406a6fa8bda34c540ce3c3c4c4901467d431d9f036daa0da3b93b1486a0fbfc. 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/TCAGJ2218938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9460051a7c5e6c9981e2ca2706e5a354ffa09c00efd3aa6ba547ecbb732c0636. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIG2470630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88e6cb39fcf605cd24c4b53209d28bcc56f1e43ac94cf27c2f01fe2ce60dd1e. 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/TCAIC2493265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4347dd28d466b169e352d82ec13102217229168da208bc443b7321c26d7889ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4R2132926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b70e02bd63def9609e5b2372865922b48dfde6e5782781191f40d331c28bf0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM92173046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6755c5e2db0597c78cd97142e122bd1fea52ed7406f861c1a9f379c9703303. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82143001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bfaa437a235c5ebdaf57245849f5fa75e72ce53068b352ca6c225884e28cd4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIM2448634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f91d1a3513e6c360cbe0d10b3bd2745a1193711d7dda1f657b5d35ea3a8038d. 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/QZWFP2382245.