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 0x25b50a54307f73043db9181b6e32169eef50b0fa1452e06cfb6356181d626954. 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/2d661f57-ab7e-4dd5-8dd5-bec0dd7b094a.json and https://artists.proofprofile.net/proofs/artist/2d661f57-ab7e-4dd5-8dd5-bec0dd7b094a.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 0xb84ba2f8310a60cfb9a7d72f2c0359e0722c54ae72ccb469e51c9146fd44ffe4. 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/DEC711705897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978f7de621376d4198fcd4f5cd84485db960fe21a4cc721a6123bbf76bb3880b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711705898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e8a04d081533e15a5eb4e6f074de4efac8a26c68e98ddbc38a5419d38d98e. 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/DEC711705899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6e0d26dd2e935e1b4bc2bbbd4c6ac9e972dbeed5b24285f69856d8d93e7de5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711705900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3562e285eccb966f855edc53873ca32072a8ca666e1d8373b915dca8fcee7e17. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711705901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5364e570e2ee5f14f777e1e64c5ed8a2bee5cddd2b07d73b63be83c681fff7a. 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/DEC711705902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa673575af111e2b01db258f8b5096af979e19250dfc22c876fe51ddeea6702. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711705904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66593394bffb12a39b633756eff9f2a6ef09c1606fdac363050befb512286315. 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/DEC711707936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7ca8e4ce365deaabee268ad2e4228627f45a16219f31964c8f03e144b2c3de. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711707937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdcb42e3b6f53c6cc68a43524a7c7383c1beda13d23aada403b2392f329aea6. 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/DEC711707938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d25f5644e5c66d018d02c5e26a05174c531e317107448cf87072a24e37e956. 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/DEC711707939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053f5bd9c356062169d3c209a62503260f3746f19b8ba0560937e8660dc1eee. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711707940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd2def5ab3e086d80fee7a2254decdc5f37685a8b999763c6acc6b9f59ba319. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711707941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3271f501d9290fab113af2686036fcd95780743274dcde72fd05b55dc673a23. 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/DEC711707942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1ead2447bea364ffd0b8d8b2dbef2c411efee8b8449db3a542943d1c349d52. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711707943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b27647ca71d8e4f551fce6bacfbe2b7fcc7961359173d9d6f2fe0dd705082. 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/DEC711802900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee87aa84b4cf6f6d9ed22353a16e2352c4a2c5d8fe35455e755da4c80cd3bd1. 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/DEC711802901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9008695ea4355b01b41c666cea03245333ea2a0bc99bcd42b28d2af9268bfa. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/DEC711802902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fcfa43701a267316cb4e2a7502857169403abab205e0a07ed54007024c2f73. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711802903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d98b5510f20765c9eefe5cb0c0908514be2f167c942904511ac3ced2275c80. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEC711802904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21dbc94e63e3ea733ce56d1debbeb3fd8a1969c76790b2952da91fd3c16ff7b. 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/DEC711802905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc20b1872ce3fcecdfae4a070a67fff09c3bd18df9bb3b208cb077a32b503d6c. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEC711802906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af4768e24303650baa0b44180fcba35bc2e5d5e86acc34ed41ebb776357c3d3. 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/DEC711901180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056bce196e2eb238fa48c6ee6dbc0910700247461052df7a7dfee668e8c2a974. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59a4e18a6ff7bfa780da860f884a922c60e3050004044532001bea923158678. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711901182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f831fc27d8c3187e6054b88d843ae4dc7d6a3411000cbde1d0a43d347ec888. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEC711901183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ffdc26cc6547898883e9ffed292a21bfaaba8fb2585d8594b619f2a0c7450a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DEC711901184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55f60c8b4cd99a28a28de701b233d1c5c5d43468bea440f7b8ae71c75365c5e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEC711901185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dee179870431883b766089d3850ae6b9ab8c436f59d2b68938a9648a8bb281. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC711901186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517d80fdb497a151170c16dde7efc0b1de9f91e73b093db1b80dd09ef3612dae. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DEC711901188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453d5d266b1104b39c7443a2ff12df678dd6827d558e17d1dbf7fac38fd8bd87. 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/DEC711803122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee76c3d9ee7c3b7f30f6bf89ce311797a0ba9900ebe7aa9ec0ca0098402da821. 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/DEC711912237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a4c40a559146eb827c2dbf00c3f2f02d7c906de165f560571c556d50cf091. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC712001986.
Willkommen in der Einhorn-Schule - Titelsong
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8171a1246b3f6c9395c4bbbb6d7fa7ae28417d639112c98b0dd6caecf0cbe137. 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/DEC712400816.
Willkommen in der Einhorn-Schule - Teil 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4a8b7931804f337447356e01c98c3ebff1306997a77b4f9204382a47d5edb. 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/DEC712400838.
Willkommen in der Einhorn-Schule - Song - Weil die Schule beginnt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238295e12d21506b3de867d0c9051637f4046965fcad4b53762262b5a568f547. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEC712400819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed41229361cc161fb80d1f77e8cd2351f582ec0784e82c1c83319e05c9410ef. 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/DEC712511130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb6557aeb13767b022a05178fcfcb2ed4d3e3041929e27e2bce1f01100c4a9e. 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/DEC712511154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea0bf7c229fcc5e00e90d0fa658938030cb975d9f2f8c9fe0b0294fbef12a17. 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/DEC712511156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e043251c3a93643e39891b5d1be979109a4838a490761d35fd4a29cdbbf74c. 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/DEC712511157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b8f9f0d608acee3dee221ab8207f77c7d80167075be3a3fb69bae5269eb005. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/DEC712511159.