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 0xd3e39768f10f61b4edfc934efd844b303b052d151c0bb050f5e6135b5752f7fb. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa623429-924d-41eb-90a9-99ff25419a29.json and https://artists.proofprofile.net/proofs/artist/aa623429-924d-41eb-90a9-99ff25419a29.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 0x30534955c45ead5d995bb8b0b6b4b32f5d84945bc2389dff7155c0b64c378f23. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITG272201151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352bb516df545add593846206b4b95b3c6dad2de57c474a1cdd3823fc99e9f2. 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/ITG272201152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b8776e20dcb9813ad5e5735d9d964412d320a017e4722659f3349d2fbaa0f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITG272201153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57720ecdadf4efa3f725fba4fe9b3a24b1513675915e6a860f3146106e003e3f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITG272201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6282297ad72bb9c577567732799d74cea7c93c6aca12f6a30bfc1ab2b1cf4c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITG272201156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18592c1ff7d52f41cb9edb9e4d79511bb03248ba84704b8bfecedf279b7179. 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/ITG272201157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31170cec67dc9a769aab102f34d99404c4e5e3454ee0bd171ee3e94e6e7fbcc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITG272201158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3f8efe8ea616bc532cc8360c5088ebd2ea39d2fe9dc679b0ce0b9f6eee0b29. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITG272201159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c366704f00a2d4308f08db024d9d7693828a6304f08dbf728c5f0697a2d954. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITG272201161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec2a01fb5e764d617fb6c909b8c956bf28cfbd9729c31b59992d4c98be1116. 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/ITG272000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9161aad2ddc63c894a8bf2941444cefaea2e585f1d8466d32fddee903e5000. 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/ITG272000189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12e09ccf90b5c804f5314def5fb434287574ff5d0d567a84bbe1e6a0b2e78a3. 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/ITG272000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2478814ccce672295dae0fe2b0d94e2c57efdb3bf7239d0baf58724ecf5f3472. 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/ITG272000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd45785ef8272e7622d0914dec2e72c9b502a56eeaaa4213cf933f25a388a44e. 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/ITG272000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a45481f207b4e91f49ef5840d183a6f3d37e3093cfa3901ec99b5a875494d8a. 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/ITG272000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37323485758f4c33e6fc0b8133604508ecbb5912be7b4394f8b7d6f6fc13f50. 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/ITG272000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c4a109b50a0f127cca4bc2df311ad56bb671974b38bb1257db52fa0ecc03c. 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/ITG272000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5823d8112b08236881c918b4b3571a61031130059031a915d380cebc4ef34a5a. 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/ITG272000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169048a640194fadaafb2cec52b6954a302714f1d7a492536246c9b27a7e83e. 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/ITG272000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7918acafd7c2e439059eb909561960b31affc2ddd7996ca5b690bfce86a652e. 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/ITG272300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b8776e20dcb9813ad5e5735d9d964412d320a017e4722659f3349d2fbaa0f9. 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/ITG272201153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12e09ccf90b5c804f5314def5fb434287574ff5d0d567a84bbe1e6a0b2e78a3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITG272000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a45481f207b4e91f49ef5840d183a6f3d37e3093cfa3901ec99b5a875494d8a. 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/ITG272000193.