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 0xfa01992470c11f7fcc2b7decfe05b98043ba9975d5d9ec825c9dfdf7ce0608a9. 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/f9e5eaea-6e9c-4e7d-a1e9-9fe28e838839.json and https://artists.proofprofile.net/proofs/artist/f9e5eaea-6e9c-4e7d-a1e9-9fe28e838839.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 0x2700c48c5ce782b20cb644fd556835a49ab38989e280c1c675ba97e3a1eafc67. 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/LBA0H1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894a631bddb76b414c938afe578a56a8d4683a8f6b1b7db32f91c155e31d8e58. 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/LBA0H1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e995a2217c9f44a52f1c774245f11a8483c390d991be1d5ebd16520f05864f. 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/AEA141800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1407acc70be4899fd41d5027547ce3bfc1cc18495790ee32089ebdb1193fa3. 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/AEA141804654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5ab5a0b5d5f330b1063d1dd8d76a029453d56731aa993e28985bbf9bbf668c. 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/AEA141805146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc9e4d45d461f6c12c4067aa74770d0645218954232a563628d96c750023b52. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:42:17Z), 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/AEA141901521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8c338968b65172239cbba8e80093f0be76917fd090214fb70b68354b9b621. 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/AEA142006601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c589ce66b4f7b147e87ec67b549535ab2d5bbd3a9d966819b4994191282ab. 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/AEA142106852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3db104226407c9d0118a163c20e1f733f85395fcf0b1009000eb597f1418ce1. 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/AEA142304354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf332e551f833d622b9579d20b32d04dedd1e824bb27ab0231c40591676d337ba. 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/TCAHB2384152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad5c462da62bfa33c2ace4fbf630f6a1f2ee7200b6615c81dddebb37bf05a5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:57:53Z), 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/AEA142303082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08fa96c1befb671b7c16acd3dc9f4fb8edb18fa6e75d343ba2373a856f3d125. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:38:14Z), 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/EGA252401858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaba89cde046d4cb27c269e2631b9535edb7e45db12dc7ee785bf93ba6d2776. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:04:42Z), 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/AEA142401487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81776167fd533026d1cf7032573e7639192afd8e30076b7b68463a96b74d93b. 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/AEA142401881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dca3924a3d9e3d5cf733bd06ceeb7368939367ff28613dee694e1b906e1025b. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/AEA142403302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e1a4c869873a9c54686f1da6762f238aac35085dc4d1bb5f7622f07dbb83b. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/AEA142403545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab60afb9b2116c40297beb45b669cd3338f57432712758f616452b49a682fe04. 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/AEA142403746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361d11ec059ab2c299463256c5c1e8fcd07841984ae5a0e43bc4f2a5145244f7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:07Z), 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/AEA142404003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb402b216338a4a540b11e6dabb2201a6f20a683504151a4f37d05f46115627. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AEA142404548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22eefcc1eccbe7e45c686e856332d7ee33ab1c49170adc5d157b889cf54db94. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:36Z), 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/AEA142500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268364b945571f00ec4aa976a84ce28fa561c7d215398d3bfd355bdaa369b671. 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/AEA142500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e0ce27ae3a147b58c9fc9e3b2ebbf63148d6df53b104034f7f03b5d8ccce3f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:05Z), 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/AEA142502275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddc0712f59624e75303fd7d141ea52f3bc588cc55025203624b918d88d04890. 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/AEA142503188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b94e15da9233d1b5262badd97b66772635c81c79e7d7dba6624a7af98268220. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AEA142504302.