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 0x3500d7e0160e16851f3d74dc58af81cb87809d123d42f7bc462c8ca623735b8a. 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/240c45e3-be42-4468-9eee-5c8ebba38639.json and https://artists.proofprofile.net/proofs/artist/240c45e3-be42-4468-9eee-5c8ebba38639.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 0x72a5b686c2cfdf39c37886d0301c101181647c45604b114ab661d560165699ae. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEP950400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8feae6d78523922a41d98a7550ae254b90c1266a7c74caa9d0c61118c3c571. 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/DEP950400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd8baee48b2865a727270b15bd5d7b09e6f7b231f4b91d0b158b2bd765d80f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:55:52Z), 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/DEP950400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b70a4a00c4b2643219e22db021156ee73960fb5b7b8db1fad64e0e8481c1da. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEAL10500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68df128faa730ee0c95f66c9ab2a13b936a3915643f3ab296cc02abf55a4a85. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAAX1164335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97144e73ea181a560ca8d7420ea5b34b2dab4a179ee3b66c95d2a864d4b8b9c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM70904875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9e8b0e0965feb1163e28623e80e806ae3f4e3942b95e450c084b32f27ec4c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEAH90500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9e8b0e0965feb1163e28623e80e806ae3f4e3942b95e450c084b32f27ec4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEAH90500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2990da07d90879f6853b88b56bf7baa018fefaa2bb0c3a65a539fc7ff8f9675e. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DECL50500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf111699569b0ea26d2a7a3f48b30b01c7962b1f6ca0955822ca8a1ddd4b56eca. 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/DEA340400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9724f8ac68480d249addca7ca0da2631b14ed1f69271eb9aba463456e1220d. 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/DEZ470500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65f75656a3defd66965442632145419db79531a6d90f81def13728e9ec4914d. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/DEZ470500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4517e68a2fc904a3476e0a08e310b22610cf2d68a4ca6577a576638e0714fa27. 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/DEUM70712273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891b067a68139bc569745b03bc39fc2557ff5d406f1fe11828a1f4b72f14db40. 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/DEUM70600854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a06eb1fc92764c3bf5523cdcea4f66bfbb567d26bd32fa45f6dbbf019ce97. 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/DEP950400063.
Was willst Du? (feat. AZAD, Tone & J-Luv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b1f42a916243f75f98d7e73f0a4f5f2a33334a8670a6e9d47d50874d297d46. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEC680000679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97144e73ea181a560ca8d7420ea5b34b2dab4a179ee3b66c95d2a864d4b8b9c4. 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/DEUM70904875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc514d082820229acd2e14a6c48e8298b67c4eb9f790fb8cb610ced44d8bc6a7. 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/DEFZ71100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2214aa4f27195e7d244d57e37bfe7d40533401d7cea15b0640b836c6ae61fb53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEFZ71100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10af750b727fc49bc1c05c049699548476329a9a1c80ca74a32f83ba040a32bc. 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/DEFZ71100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991ca572840c4cd6cac453d5c2f39fe937afbf66a7f8671df9bed627f18b3d5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEN120305636.
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 0x40f29c7e64a67608b078fc35f5fb219c6ab87f8af38972636cd94a303c051e4e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEA340501101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c97cf26c0a238b6cb4cde57b50d8ffda17c5ca4ae839e2459c5f935b255af48. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/DEN120305638.
Schaffen ums zu schaffen (feat. Dymak & J-Luv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5191acc9eaf62394a9ed7e233045fd313076b1424f7b756b484dd7bad21c0281. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEQ320500015.