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 0x06d176186df89199e6ee2fe3e76d15475eb6740e8b68743ab7478d49097c2837. 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/6125aa3a-1444-48b5-816e-3288d3e1a3e9.json and https://artists.proofprofile.net/proofs/artist/6125aa3a-1444-48b5-816e-3288d3e1a3e9.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 0xf816ac100a7256d5c5ac1288c92188291c84c37aa5159bec9185dc75a69c8ed4. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBSMU9167463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950ab9c25be3cc1c60467812162e909c614c6e0dfb7cdabb4352287aa098ba4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBSMU9167464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec8ce052bee6705bba1ff154b1b835e7c87189e0fa54ad180274435ebbcc98c. 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/GBSMU9167465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e56fd82d97672ed5d4107ec35c901c371ea87195031de3ea773153429f77e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBSMU9167466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b1a3b75d81b3967b180837aea8c0932c878d8649d5b9ced432b1f7e19f8720. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GBSMU9167467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de655a29e3c11f8e46d6badecb98d87960070a0f52d0eefcda53b9fc87458f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:32Z), 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/GBSMU9167468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea2145681128f1cdfc5f109d920581e5165be06821286450322e5c9dfaf5aa5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:09:46Z), 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/GBSMU9167469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0ea6cbdd2a6fb890809430454561a5deee6dfacac0ddee90589007185f4708. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:20Z), 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/GBSMU9167470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2206457275e72fbb8109584749fa65c055b2539cbff2bf5957751622a69e56. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBSMU9167472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565b157d0208016c6653bb789d5beae7bca8aa9d8a0868e7d5f7fb963619433c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBSMU8276313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb2ae94d677d416092a490113af3df49f6a00ef85d2992137f6b55f8ea49dc4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBSMU8276315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33beba69726891ae93c0db9de490abfdfa898c02b66cae161ce3365325e8c002. 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/GBSMU8276316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdbd896ffc6377fc688e6097029b184d9e94035201d5c6cb8fca061587a8334. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:20Z), 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/GBSMU8276317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26114ecafff7224e59aa165a529bdbc2cb489b6dd5c68659d082aa4794d68d1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU8276318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d23ed8fb1278b7be2b83d2ecb4b64ae50ed86f6e5dee6e1bffd3086b15f9b88. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:14Z), 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/GBSMU8276320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c0aa4929bc383b0aa3c99a54512ff1d267222e15190e524003b701a4c69a6e. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GBSMU8276322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcaec24832e81e001d1a066004e2e6a788ce53e487f26b8828dfc94c749efb1. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/GBSMU8276323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed901dba15e98cabfd22f4a7d5a216089fa6604ce14ba763d8d73bea8d030b. 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/GBSMU8276324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a77bf06986d4b7b1b1d1b0119d305f166b4003957c2e2d6f4ca2bf1e823333. 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/GBSMU8276325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882b352bcd81fc439da7b76d972ebbdf0edb974a83679a323db528f8ce18e9ac. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU8276327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66b7edcaaee3869060473d1812323e005be07d31035bbf2670be2ad987a8f53. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GX38U2174445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192a0c20e263e5033368764d0a4f492590b8ef0ddaddaa5df7631af5655b2d81. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX38U2174446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12414103a149d2c884ee210bdf2f3b91e72ddd339d30334ef1e2cd4cebc3c707. 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/GX38U2174449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b28a7004191b3056ac6ea4695420dd79a583ff130a75101231478209332412. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX38U2174450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad442a11f659549769fa111560e6972895965ec6c06f59ea734adb8ee538df79. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:00Z), 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/GX38U2174452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad23ffac669a414cc71a11ca04309a424154dc681c3b4aeaaff70fdf1e83a2e4. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GX38U2174453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce87b671ab89222f08b2d3dfcf40acd4eb96cdb805f3beab3b2d051ef7eee642. 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/GX8KD2327625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd6f5fcc5ebab04b3dd06046cc5606fa5e264f33f2e401a1e20fcdf6aba9743. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8KD2314933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9642bc28594de670835a94ca4f3491ddc82ede53b9a56ceac0ee61ce1c675ccb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX8KD2377577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdedd706291d37f8de7cfc16bdd4bf7665e75749f319f5879e12d9010f540628. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GX8KD2369315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a663aafa12af9bfd4d31568ceef92ef427ef70b8406ecee5c764364d0d4c75. 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/GX8KD2310303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457c22df3dc9ef1f45bfb19da770924e5bf3c888b001a809a0c4926866c16995. 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/GX8KD2398207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61061cc42e96be6790585bdfc3d255d7898635d7834e46c8c83e2b117bc141a1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX8KD2325955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85463a403d3a420ad366ef706c940cbd0adf5d403ef4ffe323fd4c7e1af356d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX8KD2338759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f781293826e0ba1b5bb379d6bb84f711d4d2a986199b99b80583906b6cefe3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX8KD2409782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f58ef3c96f79dd9bec08a9019fd883462c8a963e582319ffdcb6d3c05f8d08. 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/GX8KD2474500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b17b669b91d44ea75946afbf2b27f5c4cadaebb2bd40264097a4589235fc8b3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX8KD2474939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0c3ab387fda6494a70362e1b6689a321ddf39eb6363c52cf4c64ec53c1171. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GX8KD2416096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31647ddc9b4b0dd5910b314aed52b6cd6d58c11d4ab7e2212b927b6f14f8961. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX8KD2468100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2567aab8072482c2c2583147030cf1c2a1f371e7fc460cf305de0e5087b924. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GX8KD2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf13b72b1a4db8c9b3ba31e9ae8c2948632c98994fb7a77a26719783ed26e06. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX8KD2407019.