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 0xebc2170305d06b2ea75eaa401d0fdf8c04435b814ee8ca2728d0c6fa788e2737. 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/a11dfab5-1a5c-493b-9970-c49c84751ce4.json and https://artists.proofprofile.net/proofs/artist/a11dfab5-1a5c-493b-9970-c49c84751ce4.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 0x0a133cecf2adbf5031439b7c1f085a76d33c87b43f7d4d4afb3d9fabb3a8ffd8. 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/USX9P2084217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e944a5e66b80936654f2fe819b06cfc2dfc5596e8a9ecf771d3366ee661ee3b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USX9P2084219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f1c393a60dd6211efd65395e6444583ba3c7803191ef1ffe45ce15a31183f2. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USX9P2084220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfdd4ff81df3446996fbd9af3c44ba4aeacad5560484dc145e9bb2067b49f77. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USX9P2084222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345895cc10ec96f4a01424d7b45542f90d5105614e5d7e4e2930dd96c24a3243. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USX9P2084225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f666885eab39b447f75028039a969670a037295b904a69a2acd071efc69023. 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/USX9P2084181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f802b276e1e6d942e465d5eea2466b9d137b1b5f323e49883d12c3e6b0ac5. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USX9P2084182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ea744dbdd8a3cc9a71ae0de72e5f67b7ad713d54b5fe828c8f66b74f39bb4e. 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/USX9P2084191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788697b2197fdc5105a0027b52d685e30d97864ec8b8d92b4c0631405128a82e. 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/USX9P2084193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3789eabd529ad7909a267977f489993f645ae93e371de1af4ad50ea1705c050. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USX9P2084194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d723f3827b8759123f2c4c917b9689473c91578a6b2af14c3af806cc92dc36. 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/USX9P2084198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520b24364e3c960bc4094a7c5ef23e5fd27cb6084d9c9b9e46f613820a481bc9. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/USX9P2084203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb577de4c8aa6251f9129c186a2be086a6f6942b7394ffaa9fe2adb3eff518c1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USX9P2084206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a970b6af92b6574929107699069beee027db437c45ea58933ddf04e493ac0c7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:33Z), 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/USX9P2084212.
China María y Juan Pipa (2022 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf582e8340ebcf2a890d5dac3a87b4165e785e3ef9f54b525d14c38f1167c8e4e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCGH2196501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1c4a2b851de0f48a9d7405c17452a5f380afba498a5c1cf895832c8d698b9d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USCGH2196503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7a92264c932a21827a48315528fcb782d896f91fa5ee0bb10b1d73bd52d36f. 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/USCGH2196504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b95b1ab17ce7f75130aeb33e64f784b7450b04d23814d5545697cf5b440921. 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/USCGH2196506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2966df9572d4b95eeec5cd37d789e67942d0bf2bce88ace05c47a1bc485ac794. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:36:37Z), 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/SE6XW2266918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390a3f136bf9e8a3e8df5d4c91890251604ae743eb34fdd3e7066759ff3af4ba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XW2266919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65969558c6bfdd238e8de1681d19e1875b935f44bc6c82f6b8bcea4fb155f570. 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/USL4Q2069486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0ef3ed462c12edf47ecd543632eb58b9c3b731550005f13a9e4da06eed502f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:06:13Z), 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/USL4Q2069487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddedbc8b6769d3d2d814fc3e9047dfca5b96bfa16c7c34b313e78475c113e4c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USL4Q2069488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e1df4af4f8db8b022df89d75683909ca7764662f9101df45a50868be1a4678. 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/USL4Q2069491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524126a1507aa7e377930d792535b7a744aaca49ecbc1499ff487190cc6486e2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USL4Q2069494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41136fda45809d1e8e446e1793b4b2b02830cb53d7449c72a314319628bd255. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2069495.