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 0x0bbd9b742b54c25f0080e61d3c3b583be0e57ffa66fe67f67f14fbcbcb6558a2. 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/9355722a-0ef4-4e37-a21e-7570ca14d012.json and https://artists.proofprofile.net/proofs/artist/9355722a-0ef4-4e37-a21e-7570ca14d012.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
* Regengeräusche zum Entspannen, Einschlafen und gegen Nachbarlärm
* Regengeräusche zum Einschlafen, Durchschlafen und gegen Stress
* Regengeräusche zur Beruhigung, zum Einschlafen und zum Lernen
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 0x5bf36d22ee2f73ff11d0e272071a1ccbae2da041562e78193e9144f33fc5550a. 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/DEYA92014668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4213d01b9a3f0fd24265727a3eed8518d43f29ad8fb02c959aa036c38967835. 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/DEYA92014669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b5fa42d7fdd0b5bf4b52509b0e2c5b164cbf5fbbca4c2e92aafa098291d17e. 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/DEYA92014670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7078620862a56882fd594abddc0defad638104711e4f4d33fb44c5fe09a36d. 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/DEYA92014671.
Positives Denken und den Regenklang genießen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac3e43c156cfd7c0f4e527c264873426d1676cc02f320234a01b88981c32018. 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/DEYA92014672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae9e68090e4ea8228e8350ae24c3ea24c8a961136c89bd577c307cff06f73f. 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/DEYA92014673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb14b8c018a52d5146c0409eb25c6cfe90def5e86e4825c5c0f04ddd69b65d18. 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/DEYA92014674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c1f9aaf9a1cc727a1450ed38bc83da8b978785c084e4614d170b92363298c8. 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/DEYA92014675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac61fcec2e688010e04a5f1ff628f9684fb1418a3e8277d15dbac498c4a33c. 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/DEYA92014677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b071370521d93145cdc0e1d491279bd02460e1100d12bae65b42afe03efd7c. 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/DEYA92014679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62bb60c0e564af45286003d28d5e1305d049df52567466ff614b20150f4d987. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:23:40Z), 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/DEYA92014680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b726040af5da246e007bb5fdd67c0dbb6fcaf1c16fbd3f0084ac681811cc740. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEYA92014681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c5b837f6f5b24dfbb887fb266cf313e771a679b228608b1cea26c46ba9ff97. 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/DEYA92014682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950b6a379d5ddce759e527be7a353124a91461dd00098ab3759a0e43fd54da2. 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/DEYA92014683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff7e82797f716c5a56c91dbdb7016fd46576a17efdb77319605621cab8cf67. 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/DEYA92014684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe298e849623a624f53955881427ae8342dd614b1d028f97b0f62a37d68214acc. 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/DEYA92014685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060ac386bd04ef904ddd93b4f22a4445d19b51443c1973f891682b9b59cd8911. 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/DEYA92014690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9973badb33eb081fbab92b85fc64c4e1381a2cd2835f1478821ac2dbc02750. 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/DEYA92014692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563df2f70f75a73837b82e0d6a8f078e8387b67ec38089305b0c3d7bbd16b1ba. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEYA92014694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f5489ddb653d4bd3c1ccdd8724ec1261f99eefee9663c1ab1385404b254ff9. 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/DEYA92014695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131fdadb03bc7a160d2352ebeb3e1d2ed6ab2601e964dfc008c77b67720deac. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEYA92014705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a56ed3b49b3c4ce3a4611f1f83fd186998a8f9690fc62cf734ba90a44c2d8a7. 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/DEYA92014706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ec1c44dee57168689cd2abb88a1e0d4d55cf19256d8a0e89dda94463ec9ab7. 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/DEYA92014708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e3ac4a7530b22c213c33da2199856c3531d3181752c0babea4691ff8ea8a52. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEYA92014711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11428ffc0b9c4202483ca6b081bcbf2d20ef43dcf70bc659bc9b7ae5f97d3cc4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEYA92014717.