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 0xe710506f2e4d0e884cf691c6542684ff115f587c7715c40a65f74df9a8492393. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec5033dd-aff7-41a7-8c42-ff41610205fb.json and https://artists.proofprofile.net/proofs/artist/ec5033dd-aff7-41a7-8c42-ff41610205fb.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 0x73d669456d8296d2a8ee969c59f24e40cbdeb2c22765f6619b621fcb71b54eac. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEE861500461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02747b073b104b2976e2823b05b64fd788f77005936be1e0fa701e428f076964. 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/DEE861500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f35ae1a17a0070bda9b3cd84084428c481ee728c9bbf0f830849244aca1fd80. 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/DEE861500463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc78200151ba8ae029dd7e8ea41be4c7747f239edddd3d7c1c1761fc9373dfc. 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/DEE861500464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eabd54d959abeb6338b5ca0da27bc1527e1177094e04b5d62d4244a441f1f1. 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/DEE861500467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41c8058c18926a2ea34ed063bb7963516b7aeb8ec1c54a1611339a4e9706c5e. 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/DEE861500468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30651cf8556ca89295cd1b03f6a0c33fae4e079cd6f5759d13147b17543dff1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEE861500469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca95d6612246f15de9833de1d2387d6152f508e2fbe59ae6a0bf54c047b51f96. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEE861500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90925a457e12b0a6bd9136e12f80c70caedfd7239dfe13b09e6a6c3c00d7a80e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEE861500472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ecb758d0124635eb267a9fdd624e5ddcd2bc201372525d159c518bbbea7d33. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEN061700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30651cf8556ca89295cd1b03f6a0c33fae4e079cd6f5759d13147b17543dff1. 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/DEE861500469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02747b073b104b2976e2823b05b64fd788f77005936be1e0fa701e428f076964. 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/DEE861500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca95d6612246f15de9833de1d2387d6152f508e2fbe59ae6a0bf54c047b51f96. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEE861500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d669456d8296d2a8ee969c59f24e40cbdeb2c22765f6619b621fcb71b54eac. 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/DEE861500461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8338e7c6e9b3731f927b07b8e64f1ec1c79532d59f04256ca09bd354d41c1b23. 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/DEE861500682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a0e9fa63376797a708972f972d1edf07fdb58ba3680073ff9c186c82377bd6. 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/DEE861804253.
Alleine Gemeinsam (Remixes) (feat. KENAY)
Alleine Gemeinsam (feat. KENAY) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfac96efc7f8563180ea00b9ec1d8676886eeda3cdb5fce49ece0c4b44a1eb0. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEE861804254.
Alleine Gemeinsam (feat. KENAY) - Max Fail Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e80bb69c4be5b433e312f7083104eefa687846292a04e8ed7df79633400b2d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEE861804255.