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 0xf30c9d531bd0a306c1e7d4c1a33f4327a8bfdb2ac49260237f11d71bd7267127. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b5f119f-aee3-4c54-ad59-782aa9d76139.json and https://artists.proofprofile.net/proofs/artist/8b5f119f-aee3-4c54-ad59-782aa9d76139.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 0xdda2125bd31c471b63838d03d58a60a3106a1996831c0674024f4d403bb53117. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:09:43Z), 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/HKG291601022.
Beautiful... He Made All Things Beautiful
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eab30692128570408782624b7fbccc4f172182811175aa7ff19bf50e36cfa90. 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/HKG291500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f310ebabee6d0d8d68217f7341a8c4fed5a986a227610b0f0b346d9775cff17. 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/HKG291500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d348dda178d5797b1e02bab8e5af9c22002125fc99e598cfaec985f7bacfc3e. 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/HKG291500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242be9c0885278587535e4d913346adfcb8ed736c58416d26b42b6e99ae4b626. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:53Z), 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/HKG291500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4fe06b7d718171e601088ebd8f2d1a5c4e615cadc2201ec6525418e87247e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/HKG291500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd80fc0d6fe8c623b61adcf20779879f35b62ef4aaab4875beb382b726a6ec6. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:57Z), 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/HKG291500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13f95e83683e439784ef82e6c009b051f3a045c76fe9214d7b44aa0aedb9bbf. 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/HKG291500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ccc91916b25f0dd8a19d46788270c4ed0351153014a325948a6142e7e37783. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:07Z), 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/HKG291600232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161122df758a53c8ba2c4757add3c512c9a86b24933e0400232d2ed7399184e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/HKG291600236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dbf78e6d32d2b8066ef949726d70b7f5864ca1778c6db2c8306d93557914b5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HKG291600238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f98cb5e9b8bf29b703de91617f250099ab077305841c9f1a80a780291abc0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/HKG291600244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49db740191046a92534ca96b674fb346539be3735ff448fd5e077b0a56b4d37a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG291600245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd48d4222cc049c6726ebbf54ea8f207637d0154b76262f4b7981928bc36264. 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/HKG291600247.