The Hase () is a river of Lower Saxony, Germany. It is a right tributary of the Ems, but part of its flow goes to the Else, that is part of the Weser basin. Its source is in the Teutoburg Forest, sou
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 0x67b45de57384f7f087bc4f7201c2646bcffc814cf77db768c5a7feb193cb47e9. 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/997cd76f-9098-4de6-b83c-c5032585e3b6.json and https://artists.proofprofile.net/proofs/artist/997cd76f-9098-4de6-b83c-c5032585e3b6.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 0x7e221d82db716ede285b9e1c5f6ab580da4cfc50024b6420b6beb0589d88dfd5. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/PLI361809810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254ad40e6d1eff3f6ef796d9e60746d69344c45d000fbc1c38079854d77db320. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/PLI361809800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e8c7930d1d24171f13dfdba84b71bf311ae05b40e6bc7c1db8bfe9a41803af. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/PLI361809880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d4eaa68933f2222078ea6715563807b241b3fe087ba8af33217c595956fce1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLI361809820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd37af210d3cce8da7f19ba8d2668b7aec073ed03a7c181ab8bd1c067f834d4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLI361809890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e5f2c4882087c7f9ff5daefac86833f77f82b5337eae271b5aaf33779f4d3b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/PLI361809830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e06ca5934feb85d4bdbf012c4bbd03c79a7063586f2f31d6cd37ee3ccaf74c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/PLI361809840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd8ae14b0ca7ecb6f48734ec0fa6d868c3f101b93c346db295e874728e8515f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PLI361809860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe289b7dc3bc0093a4c3a4dc0df9f251046cb725e98939af6e3eb4e78ed155. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PLI361809870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3cf87522a8eb0d84a2a68bdf44a558c9d63ef2eebe2ccc0d2546b33734842e. 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/PLS411800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4e4d554c1e87294f7c8d250efd21e7725ebe2dd2acd50cd7c23166d66fe710. 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/PLS411800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfec82055a92e4c26fc002b8ad64c27112917b2d95fd68a9899d60bb316fff3d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/PL88H2518001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaeab90ad30de8c7eae2a3bec32f33b3ed2c00f85dfe681a831618931ee487b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PL88H2518002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2ea052cd13091fea809a9119bdc8862962ed0aaf2326a59a4f842af8b0eea6. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/PL88H2518003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5372befd9df4824b60c2c8b7f43d1a9a38a2862fb3a1f0fdaf48a0782468492. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PL88H2518005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d991ea9f00c361f30d73bd458d87156902ecaf2f8bb05c489947c7dd91b80. 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/PL88H2518007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d6f4bf07659dd7acb3b58268426600077dbbfa0d5be0f66f10e81522bfe620. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/PL88H2518008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b65550d3ae6c774e676765f88eecee946ce9bc43908dec0a999aabc559b72. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PL88H2518009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60167d055e4c03acf808032d478e58e99f4e05586820b7a178d7272839e12dca. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/PL88H2518010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bb1a6e034978a5bc340ee2ef2e65766c74587318e19d780394cd90e4e4e5b4. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/PL88H2518011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac44d902d41586125ac3d306f93c3657fe69caeee2e0c7c311971df4d86c018. 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/PL88H2518012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1e36e108dadf123c97d15c918e2c9579c9141ddbaac81b8ab648eb3de71b27. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PL88H2518013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0de2f1e6f43a9be7c345325489b70d9c68816aa3b26c89b1f75c0a5c42e1c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLH181800613.
Co Cię boli (feat. Hase, DJ Danek, TMK Beatz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc1be9e580d4c096ba85876350a26b87cdb395eb2155e409fdd639090fad19c. 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/PLI364399630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e354a07a59227c7864123d2ad650960963185dc15488834d0943c7b0a7e993e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PLI361800290.