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 0xd0f5e3c153a71d0c004dad4db353980529738f6082545644a514e5e3096a1644. 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/ecdf6063-bf1e-4759-afab-56f18e6c9106.json and https://artists.proofprofile.net/proofs/artist/ecdf6063-bf1e-4759-afab-56f18e6c9106.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 0x04934103d9075444160dc755afc69257baeea34e1e7f66176dd3e9d9a99bbe6a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TWAE32401543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea16a8aa09701550fe66d58e8b7817ad97e8cc969fdc24773945236b5ce0b70. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TWAE32401544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9807614cb71352bb6f8588bcfaf36a04bb8c2533c6b8f174aaf200203cd8ae. 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/TWAE32401545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8ea4e88b656b4d126263a0ad5c40a0ec2a3953f3947555ed89d91d573e68ec. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:52Z), 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/TWAE32401546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b52e9b1492c897a44b9b155894daaa58d9fec431051db7381a35d830f3805a. 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/TWAE32401547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbade2ab8f855153966094593c7e74acd9fd05f2a62727aa652b2af47e36eb1a1. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:08:14Z), 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/TWAE32401548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5009dd81c7c1f82f53b4645ea9d440d58c45c844bce02670ae893e7fe1b78b. 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/TWAE32401549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd613e336d080e0d8bd498ed391064a923666b9bc39aa83a31ff992201ad04ffc. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:12Z), 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/TWAE32401550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb668546e10e66217869438905503ca6c0aa86b69ae47337d96ec8b558facce5d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:30:14Z), 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/TWAE32401551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1c75fddbc1c017531001b34ba23eaccc09442e7c0ab66df1c501220f61bf79. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWAE32401553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae47d0ce175e88e618d58e6fcf0973f90dbceff0784480b11ab3815f1b010194. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:05Z), 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/TWAE32401554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fa590a3e7252907a3d5b8603516e08fb386cfbe23582f9b172107841f0eb57. 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/TWAE32402088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d503c04750e22d075a3b8b2458636ee1c35a023f47b9d78ec4cac203c49660. 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/TWAE32402810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a596a9716cf46cde4a7d8ba9f3b52823d6df07a09a6c46e807f17d6aca002b. 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/TWAE32402811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72133069e5488c026feb20e487156af83141a2cda0ae6dad445f727c373de9d3. 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/TWAE32403885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90993334bdbc0f64f28681e5c5ee2bd6323ded880b2c93e1810a66682da2c74. 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/TWAE32403886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cbbe6133c323a901fb77a67ff73262b3609a381b00a54618e88ad740df28c4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TWAE32500507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1980e5b9fdd2c39f8d45db476dfb57d757a143cec61a4b9f695579fd31e2b87e. 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/TWAE32500508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e22eaff96fb89eb4e1ccf0ffb5e728e2f5e3cc7f32f40c001727d5573fd6b0. 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/TWAE32500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d203aa78f75cd9dd69f4711ddf3568a585ae3c227cbc7ead3dad2904c8c5491. 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/TWAE32501612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c9b659d92607e4018a8fa037e7c74fa4ec8f166299ee1d7cd874348b3f6ca1. 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/TWAE32501613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87cbbc0e62b55ef29d4800a9905d3f4cd015e621e6d36f9a142ab4d0e2c65c9. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:33Z), 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/TWAE32501614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267d21e8f2725904a105778a3136b12f6e04379ceef9751555f2b9bde1f734aa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:24Z), 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/TWAE32501615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc045f52a5b501dde5ebf76e32cb60a42aa77d89ee237b9cc0b4c41970f7f46a8. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:18:12Z), 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/TWAE32501616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9792c3902be1590cd802ebf8f0c9f8be24ac929ce2c5b89dbbfc5aa23f136f3. 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/TWAE32501617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c95b68ad3a6be9f287a6f4c88ad2bbfed4b3b32eabe13402f55b43f1c3fc9f6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:54:02Z), 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/TWAE32501618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74a7cdb18453bd21f8efa5289582a973fc710c2f45b03f458d9015fb4ac56be. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWAE32501619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bad3dad998975d217ded099f0b78a856cba63879fd47c0c2b87aae88c3d3c8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:38:19Z), 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/TWAE32501620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b3be5273bcab5c4bd60f1094503797f472c4fa97d66d902d51ff4957deda60. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:55:02Z), 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/TWAE32501621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685cb9722bc4fda1df3dc789ade7a636ade8a2a834eb26ac215827acd4376898. 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/TWAE32501622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd392382d7e409fd7dad584dcf0cd714546da7f2b0354b7fc3c748c5814bcd5a5. 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/TWAE32501623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4369145f8602f230e65dd923a97682d447bc945b3107d997345148f57b05cdb7. 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/TWAE32501624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704efe9b58c415d52cdca7496a3650def5060405aefd37d4d616fa78fddb9e2. 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/TWAE32501625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bc903295c3c1abe5c5102ee26086399b907e944077a2fe1d6b451cae918ed6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:36Z), 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/TWAE32501626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8217514d62f2abc9bd58f323a0f0f6bbe9d43c79acfae0e6b7b9f266d977679. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:40Z), 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/TWAE32501627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc609a0c11e4a1b96acf39eb5125369a8980dc5a136a8f7033de5694e2c79d0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:30:41Z), 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/TWAE32501628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6fe9baa919640ca8b8d60fb98510ed70761e5353860766fe197b5692805c5. 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/TWAE32501629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d5a41b835723aea35527172460e611e7b45598b842d2bbac0d9352ad30c608. 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/TWAE32501630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae1b37cdc801f8f2ceb76b4ea209a9ed338258eb075ab4ba1f5b6ac9d598688. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWAE32501631.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944afe0e84d5f9e5b1f8da91e04a078a1d520329c7fb9ae5a80e547964861fc. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:31Z), 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/TWAE32504535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d074a387fa852e74356caae0a148e22c4adc4f3082e8594657175f36347f41f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWAE32504536.