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 0xeef632f404c23e361c8c827af41f99789036e67a3f4707abe184bd01652ea14c. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b766f96-6f19-4662-b974-c7492767effe.json and https://artists.proofprofile.net/proofs/artist/7b766f96-6f19-4662-b974-c7492767effe.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 0x21ccc14b059e8930f3f4ff89f524c78accf3c6883a4e1e7299ef8d9da9f8895d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB1701536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf4f381b5bdd74ca03fc24251c5cdd218c85883c1a9a6c90201949fb777bb63. 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/SE5IB1701521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1684de73deff3f9a7d12e1338e049b0fa67075e6409cab5c93b79c7a3d6352. 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/SE5IB1701611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbd6e19f863d85d23aee94cb4f409c2f53c9a9d959e5409498391af692395cf. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5IB1701370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9314be0dde6d02510365af9ffe434cb9d6515d8ffbe15e1919f3ae543b3f6d. 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/SE5IB1800455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fc349e1fab6e8ddf6d62d729416d7aa200cec4342b3542a5dcebcaa84d525f. 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/SE5IB1701520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff236268145d4629484abad1c9ad1e3b26aa61fa9bed0e20f886aeeb1116fa7. 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/SE5IB1701562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517b0637ab1a455674b5ad9d285cfe335bdb4c8e81a5935dfb4b5bcb95927162. 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/SE5IB1701524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6a0e8be4f56353f5fafbe39f887c73c4eb945a2a50022d54966d32f0a061a. 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/SE5IB1701715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff780d2960bf8f2d638dc3e5b6f83d20d69533743cf46007fd9c46e2b8e86b6. 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/SE5IB1701633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7582931f58f806b61bb441f01de6f2e2d58e1065966b7c1f5e22f1dcb3a1c547. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB1800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aedd50218418877eb88da966cb5125693538bd1026bed902b0fca71000de73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB1701744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b246e7c42d85cb2be74448e8ef08b53b33e4ff8a6d308b3361b643912488db8. 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/SE5IB1701498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed71e47fdce9b86a8ce84430d6f2c5082e5717d75b526aba680af917d093cbc. 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/SE5IB1800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84dd46c27332ed2aa27f1e14baa9789be4f83ca01e0f8c95a2f6009321d3abc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE5IB1800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498124af6f6003e4f7fc5e2898404bbd9dbc4a582aec0de30b2879c72b47ebbb. 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/SE5IB1800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68096b3e3e56d3b40176d7a29f3f9cbb0ad51013d12310ef09d03dd6daf9243e. 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/SE5IB1800975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceafb8c2c79abbd8ef1c27d85190a4015fb622ced1c60405d4ebb8ce77a7fd6. 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/SE5IB1701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d59c5ba30597df2e05af868f577ec8a53123d970eb89e235fe8b315fe9b721. 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/SE5IB1701564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d59c5ba30597df2e05af868f577ec8a53123d970eb89e235fe8b315fe9b721. 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/SE5IB1701564.