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 0x9670f9a405cccd7c6f7358fcd123014b55daceebd1476ee97cbcf44069beba7d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e75bb1a-a472-4414-ae2f-a36ce0831202.json and https://artists.proofprofile.net/proofs/artist/7e75bb1a-a472-4414-ae2f-a36ce0831202.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 0x8e3a61d630f87093c35733e90d7e943e91770a569ef0cfb26612a340fd569008. 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/SE3OH1716753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199acedb1273bb182f64de797b92b2919e9655029c6d64c0ac0e63772c01214. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DELJ81813861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0015308afeccaf8c08c941c89a07b5ed1b4258617cd244f686afa564e26eff30. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DELJ81813864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd24fffcb8be3ea9254a6dbcf8bc97ba159422fb97d8ec904580a3acf0a54d5. 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/DELJ81813869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec82afc7b6a90b30f837d525215c51ade2f346dcbb7376de402e4b7adb297263. 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/DELJ81813870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d484bb5ce354e5d2d19dc385e4589a486ec188ffdf328dc97899dc08d97c7d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEVD62000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdb249fae966744f9d932f22a9505155bc434e323e0500e9c59f57a8cd73e9a. 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/DEVD62000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27904ab76fdbdf870bae812ff6eaa5685de05bfff106df16b801bad118800170. 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/DEVD62000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e4fb4f5463d076b3525f45f48793b4599b33536a158397d2d233f110853ea. 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/DEVD62000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b686164e067e53947de1d33a3d92181ab8c606edab35d7aff05b123411d963. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEVD62000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc45635e20b213d05f848b03feca1ce0a256dcba15848a38c6f18e280d40618. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DEVD62000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ce8b80bf12001d2d7bb6de0b8337a9a554e041885e937ef2050e8651be9427. 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/DEVD62000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa472d5830edbfd3f791e61215d1faf7a65d9076d5bef7cfd0fb622cd0cd1ce. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEVD62100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6beb952a2dbb00ee0b9781c41ccb58b65d4452650481fc047947ab15a97ca4. 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/DEVD62100062.
Dreck und Glitzer (Akustisch Im Gewandhaus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1062c1257de873f10998626683ebab498c05fd41f98b07e4dc4dae7abeca44dc. 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/DEVD62200025.
Teenager ohne Angst - Akustisch im Gewandhaus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c92d1ac145b1dc5fdb90794340ef5e2f64555c167bfb6cf392c79a8d931f68. 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/DEVD62200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7933152709ab09f29deaef48583163d4bfaff3b9c558b8f0c7ea037ef0e7edb8. 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/DEVD62200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbc9407f1725aed361dddcd1f8b72406baa73c3b09af9df0586260ab5a8a59c. 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/DEVD62200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe318142ea54d1a92f13d6fc759276a0876602b804189df48605d86c1df44cf4. 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/DEVD62300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db5593bc5aee7460b912ee490d4eba4ed91d8e8b172411e748e0305f821a199. 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/DEVD62300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13917269fbe0b5deac0d1b4713339eb2e3d19e90102703bf0a4fd8cf8ff6b8a8. 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/DEVD62300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59981683fd1849f75ee0582794c9500d8a76f522b19479460204a884a234bedd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:38:54Z), 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/DEVD62300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75460bc3afbf3fb1310592116bb12596178d832bfb11782279c8fdff9eb7015b. 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/DEVD62300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ab28c482a1942746372f66c20cc128d692904bb5d2a4a7b2392facb8270dc2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:02Z), 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/DEVD62300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc492dbf6475bd7431eb34f47561cd30ed0002493b7c63847df158122c7f7a97. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEVD62300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad32db3b8e3f326e19dd74b46914ead3cb4804e5b6b13ee1191952ba3e6e634. 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/DEVD62300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eed0d31f1aa034d03d1ba463c892ed48bbbe5301e1eb65f0da14d36919ad946. 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/DEVD62300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01b4f2b12df285eb0c76c65f10a3b94844cf8cf7b273fc4ca3d302e4827223f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEVD62500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970f716e9e3a97a6d0111e7f095eb097d72ba7d02700dc57f2ab0fa057d6f63c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DEVD62500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970f716e9e3a97a6d0111e7f095eb097d72ba7d02700dc57f2ab0fa057d6f63c. 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/DEVD62500003.