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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bbd60df5e470193c51475596a37dbfbb3dda08c709623671fe18d8aab5e775. 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/4072861d-d144-4d83-a2f9-8790e9f2c278.json and https://artists.proofprofile.net/proofs/artist/4072861d-d144-4d83-a2f9-8790e9f2c278.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2db2a120db613d56e5450101589e24933db4980543c1d519a21d6c862f52b1. 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/ATCY01700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832674e83b92777e0e6a1bdc4612bc12c2864ddb4e137f47249cbbdbcfb93928. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ATCY01801802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc068cdb88d836245c6549ecee9656dc303e88edd1e598f96518c204e58209619. 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/ATCY01801805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3c3f6f541b7c9cb8710b1c3e87f889b3313ad16f0b68e96edf8da43e380341. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:09:43Z), 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/ATCY01801602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e9e0a0c1f9bccdc056f58f3d76d6cb1b0f9afa56ec0c49ed07aa5a60bd299. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ATCY01801811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e253943d1065f405905fb60d5100521da96a9df40fb9bcb28b4611efc34fab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEKF22001647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba67479ff2f24a0a52e871fc44713b6b7479c689f6e6f6b71c4fae19e67277d. 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/DEKF22001744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53918b9a2b5c076a5cf11d6f9c669fdec29dbb91f1302ef3fe1ee9a77b128096. 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/DEKF22100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed59c1045676938abd02e6f41a2d178936dfbb3f56d3e14bccb3118565b643d4. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEKF22100950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d6605e13f7788d08b312ce82c6a7bf717164ad842fbd3b00e51006cec9784f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEKF22101004.
Das Album, das schon 2020 erscheinen sollte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083c2b60317cc91aacc2dc5884a3e79a4f850506f2883a1bb256fd53869817de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATFV72206101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c66351fdfa1f72385cc1c8eac5441884d6f6141ad1ac32ca0abe68bca9a9fbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATFV72206104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7699056989e4fd3abc64543e4c05807c142d1381b9e4ea775d838a371b553973. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATFV72206106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce4628fcb223de6063bcba34baaff2f605d7c9e3fd81d389563067600611d16. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATFV72206105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d97dd0f663a520bef90297b43828e5d5dacf5ee50aa5bfe5aceca3f3be3feb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATFV72206107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1893db063f4eb169b1bafb6aa541b6553f168bd73f449efd9541228c0063486b. 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/ATFV72406101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29a507b5e67a950a78d2f152c3042989a59df0dd351a0e497a1b5512afbd622. 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/ATFV72406103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1556120eb7504a06fb02c2b23f246ed3ee1d6ee2ad4ccc910bcbf0a719519ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:40Z), 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/ATB152400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e0b0e39ed60dcb046ab496baf8121026d88266977879ce861b032c9e54f872. 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/ATB152400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48856409085e47598bcc011a4854f6fea7b627d53d3c5f93ffd7732b55ab71ed. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/ATB152400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bbfbe229a175d007f30c7e57aaba2c992fbe2e67135be6ad99f1ce76866022. 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/ATB152400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e0b0e39ed60dcb046ab496baf8121026d88266977879ce861b032c9e54f872. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATB152400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06af794a844fbd03d4cdfb3792a4ed1e7bd430a4490177ff3b7dcdb1a31a8871. 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/ATB152400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1949fbacd4d2fce4a7e446b25864483a117c27f6cfe65ec46e6cbb4faf7e100. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATB152400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d989d2780bae3e46d9ad8c0bc7eeca3a420f996cb1e9967a52da106ba09497c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATB152400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1851729e4338a25634bbeceba2138f491e064ee9e3a11849c8ff88258e078322. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ATB152400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798be642b2206ad77583f9e71442ea5a55f5faf5668572aee4623c1c030f69ac. 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/ATB152400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8010bda7bcb01a54108001efd65b2c95d64deeebc362d75cafb594654825054c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ATB152400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd49eca006cd82106e4046415ca40403f9ccd44e6856bd595077786987b8873c. 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/ATB152400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab0321b8952a62bb463c3af76b1be9b5ff3688dfe1ff12572763a15f9a60489. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATB152400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee638158abe13a59e29ae37a8cd57f97f692dc6b2b00b6d0aa96024d94b459b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ATB152400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d64d7eefff920d1909a56dd6ec0861e1b0071a42a2f1f5614c97cdfac682012. 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/ATB152400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09099ceec66d1fbdc83455bc5d90015c4c5d354d1f3f043e0cbc3593d09d8e7f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ATB152400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebd7979c0b11d5d2b5f337eb3c8326fa5af7882d3650a2b401ff5ca24c90af4. 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/ATB152400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7af4be42f7e8b9d59e347465cf5f1686756870540b69fa233683ce432712117. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATB152400235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c785288b9e31eff9ce111be131ef130d65b71522b41d29bc81b3aacaaa62c6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ATB152400236.