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 0x35b5270d68bcb41d573daf33c0bc82c9c306725eb2da180a3ffa59940423ce1f. 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/f6adfe9b-5f42-4d04-a554-59ec30649089.json and https://artists.proofprofile.net/proofs/artist/f6adfe9b-5f42-4d04-a554-59ec30649089.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 0x7915160923e126d69285aa12b9dba4167119985ecf09b9cf36f079a473d5c5ec. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/JP92Q2414898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e83dcd2fdaa119862cb209efb25c8d942930e05a06852ea5c88e4ad5d6d6dca. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JP92Q2414899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f81e1ac91f6671516dcf86fbf1e5b80474852b79bb19315cc2a38885332b5a. 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/JP92Q2414900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32448d366bdc1a325507f63fdc621facd5a45888a8ebfe2fd1c4d76d0cf671a2. 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/JP92Q2414901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f5a78e7da84520ccf9a8d78da07e94dc78ddc04a19676d498c030ad2558e3f. 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/JP92Q2414902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f08176626a27832c957c1fe75478a2f1e90e35f1aa947e27e7f21102c8262a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92Q2414903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5935dbb3e594f886288389118d1ecb8c0a1ced2a18446116ce30a75ce1ceacf3. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JP92Q2414904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b60e2837ba157ad8cddd029b50c76aec47f41787bf15d76884e055f97d1788. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JP92Q2414905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eacc3d6539171d1a158310139aaf8a811bdb2daaaa635c93867a417026e98b. 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/JP92Q2414906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c377174bc1d12608c5122ef66eef04cffba980b49799d1ea337d88f76aec5e1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92Q2414907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95752941d9a77d76e17a70b0a30d3429415c2a3f58e675a3837e119d4adde6b6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JP92Q2414908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b2ebffb4fcd4d5381d82988dce04354a2c0e1f3be210461c2d273aabf8532d. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/JP92Q2414909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8bde1d0107793eee8a5552c014254b8ba9cf75e6d57c512e8bd41354f32374. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JP92Q2414910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14380918886107091040743af3e9bb2a42de91fca9de136e922eb00d59de8015. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JP92Q2414911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7494d386aa093ae15d38f7f0b1a4e9b5fd17c6e7e83f9b6e8a61e12dc2a889. 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/JP92Q2414912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f6965cc211f999c0ccee331f944e6b611fd7bb43635d319ac8eced5149ece. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JP92Q2414913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dfb03e87dcc61fc82794d0e1aee0a6f40dc062324e333224f8e5897a72ca55. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JP92Q2414914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff5240dd359dcb1de996b576ebf3a95d8118792ee165f36e5e8c7bf5cb8dddf. 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/JP92Q2414915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0968d99fed23e37cc7e161eb27922b5af9cace3d152b5bfb7ebbab37b27e94e6. 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/JP92Q2414916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37acd85df98c16a2561c5e0c7767fe4287ceaa74a74be5eff61bbf452e7251e. 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/JP92Q2414917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87aabf48b98165a141738f46997adb5b6ddd3d0c2f397357fb6627bd0ef8b7ea. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JP92Q2414918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c034ab7a54ff94add75ed5771558c76d23bc89f4345a49bde1b7aa883a76292. 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/JP92Q2414919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c955d5bbedf44ebc5fa60d8231c68f4b79e0e92f4b5703ef4b848050702a4. 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/JP92Q2414920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36568b4b68936fdaa1e080f41bcc3054c9b21c80b8d4be414fd55a8441f6be72. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JP92Q2414921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6b2e1ef52c082c2b860f587798429bcd91a6a12936d1d367ddde5161ce00e9. 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/JP92Q2414922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ed092952eb07d4756dff00a80e0c7de2047bfe540797fc9b950862af45f1ed. 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/JP92Q2414923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f2d631626f5af7e417f105939bc761ad1cab98aa862edda6eaeabaddace0e2. 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/JP92Q2414924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd157785f55036877bc9ee363b11a82410b46a53cd62165edf85e60b57dd214a2. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JP92Q2414925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b56556276e823331c03cd14f885cd84852f5f10bdce64ba32d7bb4ddb003f6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JP92Q2414926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb6c462912eee5408ece65ba259e53b8a67152a97ef5157137452d819c27a40. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92Q2414927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d998eda8726e9614d4be674619f8f2ca9f05b54f49a1cc772077c6c478582a5. 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/JP92Q2414928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e907ab9c7aad15848e4cc95a2131be6012253d3dc2216e27bf3da158d0715a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JP92Q2414929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea9bfef341d2b4c0772354d414d6c9aebe959f22bef272f987d6c4c7163af98. 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/JP92Q2414930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c75f755fb96c6e761b70b20111ec869fa6e83d747c57928949edea25bbacb20. 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/JP92Q2414931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece9fc1fc9f778c1570da94b927d7d6a8a2866b10380ec1601beed7538073487. 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/JP92Q2414932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b203659cff5533d637c2b83704c65ee59883e204f5d2fd19ebb1c61a5fee288. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JP92Q2414933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c2b9ae03c3d0e76db70566c2794a205560c23cf5f417868587c9cdaa13e07b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JP92Q2414934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b7fcc4b39fbdc19f2ead8f0565f6e4f63275d08e7b157d767c26bc492dfe11. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92Q2414935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85895e7ce2eb6e06dc6caee68301ce43139dd027651e7519c592001caffbbfc1. 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/JP92Q2414936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc6467282ba5bdd48ee5b1f21bbff191e25c6b40bcc20c1f719c3bb2937af28. 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/JP92Q2414937.