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 0xd19ab70fdb506f5725fb077c207c55a89dedf3f31fbb077a9842a9a29be3d1fd. 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/8126a751-ae11-4c61-b65e-555f875a5f8a.json and https://artists.proofprofile.net/proofs/artist/8126a751-ae11-4c61-b65e-555f875a5f8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Black Mountain (10th Anniversary Deluxe Edition)
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 0x535b1917da1e06b51e31f3872608111d137d0be5dc24217bd7e30f4e84507b2e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/US38Y1527001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060ee3e1f9f96cf351a667481110ff633d359ae1b28c720073bb70384187cbf1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US38Y1527004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bd64ce2ba6c2a1a58770be6e2c361bb9cd4b187ed8f33d364feeb0181617f5. 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/US38Y1527006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a738935055da2fc90e7d8757c00868cc3caca12e766c8e7cba1aa078ef3fb1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US38Y1527007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8997c907b2d89564c0ae531f00511f5d6d871b071b22a38febb1412508481d18. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:00Z), 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/US38Y0809007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a32800abd186212628f09b97d5956bc00a989d19b0004fe0a6a156cac45b92a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:19Z), 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/US38Y0809009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3541a4e838df916104c95f371869ce7e7a8f396627a0b47c106c082dd0796d. 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/US38Y0809010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a7d9ddd1472c7671256644a441243664b0310bfdaf73304e25c178de72b11b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/US38Y1017503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d44598744bae0444251da52cb123f41a49a2196ad9af5db91dd893e5c8f48d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:55Z), 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/US38Y1017506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4799bbe01a5c09673be38cbce372aeaf7029aebfa01142a4dae7603a89f79cf. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/US38Y1017507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5a230963b4898afa6ac9ad24dd23cd9ee80d37b8b85023ab7c10df271194a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:46Z), 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/US38Y1017508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe548c73a190a78a166ad659c68a935e0d4f64cc41bf9264c51d0af1d8afa0e17. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US38Y1017509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eba92833055bb5a1933cc4f776f1581f24c6483c8c699f687ffb6485e5194c6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US38Y1017510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc566117173e37cf87b42d0ca5e66b94123f6ffc3aee5d514ab38e0d756e14562. 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/US38Y1202003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d804ca13b21ec646fa9847b823cfcda5eab5e52d00a15900cbd43c74d8d90c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/US38Y1627704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e025610f110663cfccfea592cfb1c1bff519a1a59e1c1dfc04ee0bb0d32a43. 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/US38Y1627708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812b2cf1ff4812d269fdb68c5aa1a2159ccf34980e57bb57e041b9e0b209bf33. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:03:11Z), 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/US38Y1627709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8441a3febf89ab5e7c339bfafb5c9c2153d380acf06803a9918b068c04ae52e3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US38Y1627701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115a75c92f7ac049b871b2cb47ab222e5b27c8b3acfd79485a14ba05ce64f04d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:58Z), 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/US38Y1627703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b9fc9801635a83c2492ab37f13fd9aa0c4ddd0dc875d74bd910aae4591720. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US38Y1627707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d3670fcc2a875388091f0049af5c291c74b6e7be44b775c1067283838a21d0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US38Y1834001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231831ce51ebc973e10e66af8663dc783233eb15dd1ddfb37dba095eb5713ef4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/US38Y1834002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19a787e1d3a6832022ff28772e6d9011aa1f5485200f1a4908e7fdbe0062889. 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/US38Y1834003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeadcf1e9bf523791221256e822db27d6f00a9490136ceea375e0e3d40d2ac1d. 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/US38Y1834004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6770e17d0cd1d9a625f39e22d2ddbebf3cbeacd4aecbc4841b914573777bb0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:23Z), 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/US38Y1834006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a10af4b21bfdd0bb8ba10878de4cecc6587216f9470aa15a43aedeaf90af85f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US38Y1834007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545778556cdf8c33a66db5db42972aa7bf1c35dfe4674b230f5273dd41458f46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US38Y2030501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec07edd7629ebc27051c0c9c0f44de82fc295c91df9890c5b18309a831c0b668. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:51Z), 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/US38Y1935501.