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 0x8bce39717a8a3bbda86a2e205e9cb51c65a0c4014383000b172d4c6969966a0f. 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/0890a7e5-d700-4f0d-b9bc-6760750ee75e.json and https://artists.proofprofile.net/proofs/artist/0890a7e5-d700-4f0d-b9bc-6760750ee75e.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 0x215b1f58a8451488b0cba5bd62df0967b90862a7e06dbaf8d2e2964a4c78e863. 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/USCGH2407095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb74fb530332be88417a2600614c3aede7c50fa983370c1568af2e88bec44db. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USCGJ2438408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561fa2341f1d9ece85c717ff1a369ca169ee35a450392c4e6af0795fbd33bf9a. 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/USCGJ2438412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaee632cc8f007ca0d1ab4228c4541911f9f0e17e0ef3f9d6a73888eb7d8a0c. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USCGJ2438413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5740fba975b2944bf68e817ae57d00f81877738a971ddcee715180247580b9. 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/USCGJ2438414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf257cb302f4daebf50bdae02a0b6fe91fa36f48d212e649b338f38d593887af4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGJ2438415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7efed2e12d1bd8c6a3179da4e1fc45e1d87d74093e3ccfcc54f5f6b21d5c5b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:50Z), 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/USHM82497910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3083d48890014a2486e05d2067cc3e55cbcdb18f90887dffde067a765501008. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USHM82497911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e2ed66cfe6f00e0f92e8dde961d7a11825c5f3afac7b235257bbd9a828a2cb. 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/USHM82497913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fe66ca65915efd0277ca5c0be979457e53c35b99226c12038c68ed791fe906. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/USHM82497914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74980aaf159f312760af074faf2a26a4bcf2626b6d425075fec55ae46f9210b. 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/USHM82497917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de47a6fa80c1502f667ef343244f8da23e2f8194563da570d693c4af577777. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM82497918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff0b8387ff064d2e7b1bbbf688e70c39cd5f7dab0283844773ff4db1cb41ce. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USHM82497919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84658d00b7590e2cf50eb27438e8254f314d68e16770f91c6e89fa9ed78f5515. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:44Z), 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/USHM82497920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2aae4726e4b314ed10a2342ef875e40145c91495f7bfebc8cceb3b8a088c1c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM82497921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee364c505c565933aac19f452aeeb785d9444df08a38c432d1fcd8196b21d2d. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USHM82497922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f681f869f8fdb037d0f6db3bbc462960e98f4ef377ecc9f27486aed140e001. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM82497923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509498f636facc19d55f0a13f668ff83d70bc340a5e6df26916636a3acbf4173. 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/USHM82497924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c451d739859ad9463f2b67833082e1e03ef0d88e3c6c22e7fdf81aabd5cf2b7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USL4R2466566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf8e3b00217212e5604975e0d6680bc501c829043a44cbf5ddfcd067eaf8840. 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/USCGJ2515268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe303ad28063ebba3c34fe50f5c3f3abb8d9520c1b8a0662789bdf40d93f8d8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/USCGJ2515270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8600fb1da9d5cfc373152628968348d8149175618875320c7d376940f636fba. 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/USCGJ2515272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44699bd5ee50fc054d414ebcd429a63fc9c752b639c7edba91f1959145bc0850. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ2515275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4debc619d4d1510ffb76fe663764722bb3ae9b1cd2810ec5e718520fc7fb662a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGJ2515276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b8a3d8a7ced466aa609f4f7a7fcbe4a6655e0f8733e4f156ef16ae6544fc59. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ2515277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afe83ae13660ccc0555e8eddecebd37b455c72b46a32b758b87be155320e9e8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ2515278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7b8180eddcec0fe650d8b1e4a0cc86dd26156eecdfa65ac90cfd95c7c55bc2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:58:55Z), 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/USHM92570387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ada2aef47b1b5999b8585d7f2546758de983300838bf2e8b0bd4b8c7d26b78. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USHM92570388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89295d41ce50ce82eef88650145f03f62178ed6431f7eaf27cf1828efc9d417. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USHM92570390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d088863a93b96c216688b0121de9354cae22f54a800295812a84717c3b5d05. 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/USHM92570391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789deff6879cce477501b701823a7f591da78c6f85f88937edaca26dd8876f4d. 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/USHM92570392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4348b876afe3ace4e3f59a3e16feec2bda4b5be5d2e1bfded11bf63f86ecd7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USHM92570393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74885cd331584f71638f03ed670808503c71559c17dd26584ed353f2f94ce9f5. 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/USHM92570394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a2dac2b941cd31692c17d0ef25f1520f49d51cb5d657702ef8ef6382dd7493. 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/USHM92570395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1f49f69eed7df2b00bbe1663b5aa57d499bd43fde09425eabfa3ec36ea0cd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM92570397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe077a07ff7af076e1e5aaad5f233b1e001923e604bf0e77c215bc8561ef18868. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:52:15Z), 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/USHM92570398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37325311a3c905d6fa1ad8521b5b241a0d2e1971ed1e34546b079c8d0ef290d5. 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/USHM92570399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22467d529560881d6788b2c950ba9af2149f3958e452abdd5c0bd40b84dfb0e1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM92570400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c3d8d1b7d1b282df37fa885edc4c54362a2b5c82ef96f53aeaefeb6902c46. 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/USHM92570401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210375073333d2eabb08d4a774a621817b9ea1c6e0ceeba309f14eff864694b4. 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/USHM92570403.