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 0xa66a1195c0e73de6bdeef2df5731dcdf4abc30d61a26237121f8ab9b9aed27c2. 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/daf9a04e-a958-48ac-8722-c52c2057c40f.json and https://artists.proofprofile.net/proofs/artist/daf9a04e-a958-48ac-8722-c52c2057c40f.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 0xb17b2c0255cc82899e4449df15b1c559200168bd81b625c4d0f08eba58c4f227. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:12Z), 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/PLB382200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae888ea112c903a35fb11af5cb7ab5e4f0a82cbbc22b9dbb7a4472bcb637cd8e. 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/PLB382200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdbde130c4df4a99ed1cd50d3b9ed8c2b991535218688b7767502fca67675d5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:06:46Z), 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/PLB382200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1405be083ea32954f2b0b7737b74d1a91c3a8afc9abe6179de922dceebf2e8dc. 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/PLB382200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50978a6f6d9f27e314c81166fa7eb91c40d75d0708672a2380ac581142f4587b. 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/PLB382200213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2dec9b1a8e7309bebb169e0c4cec8b3b334f6e70eecc6cd542119560101f7a. 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/PLB382200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184edffd38ddf224552dc2931f5181706adb54366cee3e06c2d8b7f0ed09232f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:17Z), 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/PLB382200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe069ca8cfbbb309ac6e418ed94effd7a82c02ff691d5c3dd70e5083cfa81847. 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/PLB382200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97faf178e330b0b9edf031ae0bee8ced20b1f80597008d7313be0e504177ff3f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/PLB382200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46561d8a88f2a678fd23d7599dbc81f29bbd59b106da873bbb77b66b4fa2d63f. 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/PLB382200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d9f4ce1cb1135f322f91bd8c35d14af03f2186ce1aa1ceca6e3d973810cfca. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/PLB382400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a85793ef28c87dfd038211fbb9e2142bd44a51410c264e61e4e622cb420377. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/PLB382400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd43d9992d67d6c98e2f16c675ac72821a1d6ef3c3194c79892974d41992b8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:20:27Z), 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/PLB382400698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36bdcf69ea156d3b94a3d1720b2435e23ea948c1afc8421bbf41566804d946. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:03Z), 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/PLB382400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd43d9992d67d6c98e2f16c675ac72821a1d6ef3c3194c79892974d41992b8. 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/PLB382400698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a2c3abc3097ad98f063dcb9b18a3e211976afe9757f5ccd2edf8307d1231ea. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/PLB382400712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738b405be269c2b0b47a4df4d832be7208559368eec3ef7885be2e24d0f25acf. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:57:51Z), 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/PLB382400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba977c7b69bf8531cbcade2f910c758e70560f2bbb84d07ff2f002203ac8e9f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLB822400220.