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 0x146dee3af3f5bc919e15022293c59fd9df0b6716dcfa8c908d28359f1de01e81. 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/74fbbc8c-98c4-436b-a203-c5ffebcdd703.json and https://artists.proofprofile.net/proofs/artist/74fbbc8c-98c4-436b-a203-c5ffebcdd703.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 0x6a1f7be34f451a73543af5d588eae78e41186ff56a0ada86105c3e5cd14b5a1e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:33:58Z), 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/UKFT41813320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2684079cb9e40fa69a1c6a4b390597d79aa2b44a5feef1a1d394aaad0f3a6e3d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UKFT41813324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b940ec967a3ea50ae24c9747c80b1181c3e57d8f392092588fdbcc671f6ad6. 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/UKFT41813328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9585d10731280e2bebfb66080e7acafa3f6b3a5333562dc2f2ed93caeeda0de. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:39:52Z), 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/UKFT41813329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c936c39fb9f8d61a01416115b292cbb3186e9dddd7947b07ac837d5608c22. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UKFT41813331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2684079cb9e40fa69a1c6a4b390597d79aa2b44a5feef1a1d394aaad0f3a6e3d. 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/UKFT41813324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead7931ff37077dc6ed56a57357f81ab7099ab22fa5cdfc95d5cdd25a59504e5. 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/UKRKJ1906407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f31da286f3a35330336a335a797a518584d54761d9397fac758a65bddd2b5b. 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/UKRKJ1906272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203383a8fab552a4b91e25cc6f6255b5aedc3597890c37bdd2b51d4d791b4421. 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/UKFT41835655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b85bbe0f72265b3e5ff4b4bf39762d3d81c0db46b256703061393e6dd29069. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKFT41824381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aabd5d3c808cf6aedac51b1158509f4e3ea91937e8f6e0ac56b23420c9c58db. 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/UKFT41824389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b45c34842b6c13f1c8db0ede44d90fa9b84c7aac56c060cbaf7adaa81c9c5ec. 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/UKFT41824402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f504c5cbe64fc8d7e8f1defcc38a57b68d527c1ed45d02c897cf60916281f2. 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/UKRKJ2003610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fceb6ecfbd585fdc9b79fe979a14eed0cafebbb122757e6c74345147ba69f3. 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/UKRKJ2005456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad41bc4bd678f004d10f67ccb56f0f692825266a0032106da2e9c7fe6dbb9864. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:02Z), 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/UKRKJ2010735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab40f439cb2a865ebbb19cd3e0c3c456cac1a6307c3b618ceb0b409a44a12030. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/UKRKJ2115970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee2d4e1d145fd351aee21ec30fc8d548db2f1b094aeac7e983fc86fa582b041. 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/FRX202130787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2012f2648c58ce5693da12a7df39b00228ef228f4345031fb917238e717479. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKRKJ2201380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd603ae453408af114158bd73c01bb8d2c53c9d8dc53b7da0d79d57f72dffc33e. 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/UKRKJ2207511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b3af8d3970fce92acb539a127da51d2d7e0f6a6c8308f2115fedd9cfdc0e2. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/UKRKJ2201044.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d266b46af60d7edc3bbaa93662cb8b8293da3e3f5bad0fe1ac72b650470d75e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKRKJ2201072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36db0a1b301c053da3c72a9f226b944d189fe3123e611a3d577cbd9aabfc34c6. 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/UKRKJ2201075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7e65c54c0dbc87b11bb282b374da73ea94352816f86478a3bf06ca06c27fa. 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/UKRKJ2201399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a77087ecd78756e40b806166ae6242af5c5e3d13c124267bc945d841e4d2120. 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/UKRKJ2201074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dbe8efaafabae66b60aab9db36f087e4509f37f95b4826db4f3fcd1030817f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UKRKJ2200209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840aa7147a9b6d952f035378a36bfed4810875d83c87e7679f894f11a5ae69a9. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:44:57Z), 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/IDA182232821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fed082393061a67851155720868a2f0fd468aca2dc9b2f09ee5c3c837cc736. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QZN882214792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7812bbf6ff7b0a65e2e56160708d94932ebecaf7164b82c37e5a2c0a185b73. 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/FRX282279335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380f46854a8887143da9cd85a527ead25e4924033f6b9fec1f341d2d9a38f2e4. 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/UKRKJ2402096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be8186ca5e1b2612bab6ba75905ecd25d95346639c768db8ee53759caf9bf72. 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/UKRKJ2400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f547d35adcb85f08a3c634baca865b969b50ebc2da08fa7c816dea062ad17. 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/QMDA62570815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430e4ffda27d46d926cb0e6dacae0b7db2d371b51ed6497b26630c01eedb2d5b. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/UKRKJ2501577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645306ca47dc55b09f549cb434884c552252be476db2b6446e296a09f78d374f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:52:04Z), 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/SGW502575347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8136e9c6be6dce28c4b7ae6223b428ec3e3f14c06290435fb6317d3eb2e6813f. 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/DGA062582284.