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 0x7ea5454282572a0f87c39f94ba9c0baaa228e127fdde3fc65556e447770f6b51. 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/e8b5bb38-b955-4577-b834-aae540e39ee4.json and https://artists.proofprofile.net/proofs/artist/e8b5bb38-b955-4577-b834-aae540e39ee4.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 0x51e5a5b12c83b4067c67a71973beea3eeaf30f3c5b623eba4843e3c1d416f15c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USHM82088062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb206d6ab633132aaa7868167ab1e52baf5e97162a680c2d088772fc3b869390. 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/USDY42139350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5806f3714779c8b20a8d213eb17ede89c933cb9076466b7888c7003426c596a3. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/USDY42139351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf3c24031cc895126282b5897d7b974287360ac8a5b27115c8fd015f788b9b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USDY42139353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedae022be203b28ac3823ec3e362f173a7b8a67b2fcb9e8ca7cc02f9dd15e4f. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USDY42139354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf309243aa311a2fc6bc5567025e565a098350456c2e4e76ce0b88fd015c8c70. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDY42139356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c6135c27e89c9bf809173926aba21cc09884c7722dab2ac59a6f3def04b776. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM22114778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a7b3f914dd1a8de2891bfda9257857d8f8fc0da60024c2e0c8b2ce8c1621d9. 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/USHM22114779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef396006dea7742d032ef8db6e5ee28f00d5e695ec83f2f956d4a0cb442c2e8. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USHM22114781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7704df414fa08b0fe3bd4102cd4c7c0f30ff69421dc55d83a1f3237c123fa7a6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM22114782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c61af8e7633a3015bd5103b9602e137c1187eb8d1761c5ce8da2f8373951c93. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USHM22114783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103b9ace02d928ce269536a8b400a3fd8d5372804ff75a7e42fcb264b63964d6. 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/USHM22114784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedacd4dfc389589ec941ce8c2b99e2e6727d10ea76bb45dde7c4378fb621f4d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:54Z), 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/USHM22114786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f4a403e32dbb4edcae0b9e1a44f56c31a2821ed1c10b132b27042cd4f25f9. 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/USCGH2277443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f3916ce5f3296d63153a2e8856274e6b8219345d14da34fe903c1149f15b93. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42263190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a75ff8db0d4f315613bb431e4530cdf23f3578c745db228ec78585b8aa18da. 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/USHM82219125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a29bdab3ca676f3c436dee82cf1cb3a4efe080fc2905eb64160facb5bcc2285. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:54:26Z), 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/USY282310392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32a60a8c6f025320ecf644a26895667c0267a3df6f91947500347ad470d499b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:51Z), 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/USX9P2379698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a94ede925d4db379163e0c6d49f4efc1e79723798fa0d17c00ca93355dfc94b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH2476991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9b54877a93a8114b1ad4a1f5edb3a4723203987533129d45c3466ed3c94f01. 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/USL4R2435427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9495fbfbc165c0cc1a0aee2627acb441124d03a6975aeedc233e0232a3af6fa3. 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/USHM92453091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36305c00d51f179c1e8155a3686505b5b590c2985fc26100b5a0740d6ad7558. 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/USL4Q2479115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa177f715512acc631db02ee21419744ffe872d9f919caee974c0ba3aa7104fd3. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/USL4R2435428.