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 0x3a8b3e9d67a34c688adc96f6490544f717183cd6fd139ebb1b7dd70080d2cb11. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f6b3ed6-5a83-4a1d-97cd-51b68387fc6a.json and https://artists.proofprofile.net/proofs/artist/8f6b3ed6-5a83-4a1d-97cd-51b68387fc6a.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 0x84814b17427fa5ee11b4f1095803cbf16c490c006fec7e189b070bc830663794. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/IL5840703691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb2beb73a026d59409191798e31e98525c8549131bb1420a997a9428271010f. 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/IL5840703697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fef3860a6bfdb1b257b0fc041f66d84263ed114034508bb6358d3dd740634d7. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/IL1011901329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75266d9d2082e504480bc39eaeb7de60c1fa4c13554ec51bfe198b94c6961945. 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/IL1011901330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31267b49b0d7b0183b9723f7169f7a69f64b7aa04fdeb87ae4a6a55c857d5ec. 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/IL1011901331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0cb81ef84830a15e61bac430352de5b6eb94c98892bbb76774e57a8e462924. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:27:02Z), 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/IL1011901333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be284eebeadf3e8829c8de2e78374bdc6dc74f389bd6bfea79969de094695a3. 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/IL1011901338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9009a975a86439f02e4b2b71778848a1c6d1498c0334be405d3753246d876297. 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/IL1011901339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973d80ac7b88bbd8fed7869ba5d5c921631ffebde8594042505aba245e8647f4. 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/IL1011901300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd896d7c2ae55bce260e107c071d431060b2877f74e621fd8b10a8bca54394c1d. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/IL1011901301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9488cd88afac7b394b7405dd24ae703fccff8d56156e7557fd9665ba0d8efa. 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/IL1011901302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3deba9e29873422ea58a3fc22f6073bf64faad906c068977cb9e3fa4acdfbe. 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/IL1011901307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893dd85133d1ecf1816f09593f048a91fc38c94dea4ef7ec75e6773dafe08953. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:54:30Z), 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/IL1011901308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4d7a45512daf1cde530652cf89edb7a7d84c29a2163636d739f04bee76cd87. 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/IL1011901309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67bd77c3ffdb981c69a2c35113b98399d1a92f1028004d2e5daad099381ae1d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/IL1011901284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312aca712e425444068b342945a1f7c011d1e5057d54a3492722d81a1d092c9e. 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/IL1011901287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f375ac87edf80fa43ff5591cb88a655833ef1d09495609a9f9cb1eed3d2bf1. 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/IL1011901289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e09cecfb11c021e67e9c7ef7ff9750bac7d09159dcc256920b9cb4654bcfbe. 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/IL1011901291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4ef478d4c31d96bd036b074be1ab7b83e2960b17676203418f480e87a31137. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:20:50Z), 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/IL1011901296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63560aec1e6696ce6c03bb845b046caf5b59b87f87f9961f2548daffa48c19b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:31:17Z), 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/IL1011901298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea84dad19f09b314deb10dbe1d71ef97b636260121a0f95c21738e2648a640a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:56Z), 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/IL1011901323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28559cf33aad2bf8e012643d1b4331f2cdba94b20d27e77ebc3507a6cc494b42. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/IL1011901343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746cc6a309de6e2bb06d39b6c42ca3b1a560926bbda41f4978acf0b16bf9f6f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL1011901663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dfbd38155e382ec8ed8d1fb3cd4ab883c495b6a92f47e7b4f015720502e876. 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/IL1011902432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780ac59e1ef3f41c9c74d88d494779ce70d145be8e807715d0fb7d57d463b12e. 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/IL1012000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a7c58eeddf5858bf06d7c84676247bc78fb25b438fb32c5f7d4e215bcc315e. 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/IL1012000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaeac3372a55aacf38812fdcfd2d758a20c0eda1a3ef88e36fc7e0570d4c493. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:21:06Z), 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/IL1012100752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2f5b097a13b060e0ab202f71d3eb74024dde27bc46fcfdbbdd8dc6b206720. 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/IL1012200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032cf217c8cad6da43c4bf4c0221864fa7ef671ccebdc82b21a07d6b58a3037a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL1012301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea189a9bf0ce207248343f123d6e103bfe83f15b699070da3f97e874c036c26. 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/IL1012301883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e00616e291301e69155e3a2b33ea14ce17fae06c4225f14d89af20124c6fea4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:29Z), 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/IL1012401657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa119fe6290389ce0d0457536caeb9b72bf3f3ca44011fdbb1f002b3734539486. 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/IL1012402602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e48d67eabfc16d38800b6038c1f353af0efdc2710340d4cd91e1375e345ec0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IL5842029324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74dd30db9965616c186255c8cc59680a311859df360489acd389c646c15b483. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL5842445887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74dd30db9965616c186255c8cc59680a311859df360489acd389c646c15b483. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL5842445887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e48d67eabfc16d38800b6038c1f353af0efdc2710340d4cd91e1375e345ec0. 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/IL5842029324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf18dd8cb74099e8337ea1467748d2dee5f2832f693453d70752ff8a9b8fad. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL5842132831.