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 0x7821f1852e3dab0fbab40a55c32b1c847aa7d0233fac97001f11969882ef0518. 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/acf5ba41-f003-4976-8f25-4646b1772092.json and https://artists.proofprofile.net/proofs/artist/acf5ba41-f003-4976-8f25-4646b1772092.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 0xa13ad6a6ee11bc58c35387bf2a06cb102967bfaf5da4c3c015be7b901f8b1bf7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USA2P2132112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe05c22cb9d604a74511ae4dcbf0eb5f8d4e25097305c0c4151705cd067974d. 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/QM4TW2021291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e6710ef5e741fd6c3b86a4caea5bb73f9c923ea522c910d07afd72688279c2. 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/QM4TW2021697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122038ef558e214f3474ee7a4cfe9680356f62e0dd08be5248aabcbd3e7d6943. 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/QZ85M1973104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53a5495f22cb44dd942b31097f50600cc15fb3e12e228e1326fdb016f3aa649. 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/QM4TW2021330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6cdf757b0dfaa3eb97c5449bf78c6f298e6f7c670cca501b1295dfdfa892de. 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/QM4TW2021334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead903b9749c5becc5212ff7e5474be725dc09584124f9e79c1e4bd14ec8bfc. 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/QM4TW2021335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef92c0420084f6889d9d8755d08b4e0fdf164894dca9766c969afc739c15da65. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TW2021337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8efa9ed991e34c2eab171bfb3c18f9878218893c3fb1037d65c4dfab7d7e38e. 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/QM4TW2021340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57abb78073a1ee9778850454c3ae962d511a0adec5c3ccb3c6b98dbd1ee21545. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM4TW2021328.
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 0xf909a07677875743d5ed99a45ca6b4330dc8f0fbce8b3862dfc6d2c0fa7be56e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TW2021329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1bea093d6a684b8fde05db1ddd8f1d97d26c561a20ddae1bcec765b4df25d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM4TW2021336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e8b8a99ef2752161363c2e8e218e54af8b53d419cf6789378e96fcc2ee29db. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TW2023712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadf22cd24c4b84f1d85dcfab3a62b138e2ebccfcfb32ac8bffeaf0f344db994. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TW2021339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0663a50f8d040ab291f987638939cbe16ec80091ceaffc7461a5bd623736ad. 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/USA2P2029624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcb0f62fbddfdaacf80e641f1ab968178ab9a6b24fd2918180dfa8d70b92511. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2044121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbac91b72ffe30e392753a755b0fdf985bf01e1fde8560d8d98b96c55bae692. 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/QM4TW2044157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928af304f8767352712eda7f05df504dbb64e8f8eef5d08b9eed64b3c797b89. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2044064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3439cb64ec455e4495cb1704f9b149fd9d81062c7d42452ce0953a8e9c31e3. 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/QZES82025104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2641a669c3864160556ebd14113f854867a27e214eeb02dbb32a78fa97ff48b. 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/QZES82025108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080a67ad9e9eaa1d8926490921c458c2cda88281c6120bb9d4c07d798bd02a7b. 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/QZES82025110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4071c4730426cae72a11bd6a8bb8b262a918d7ca6186bb4eb9f66982a555891. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES82025114.
White Lions Ent Presents Tired of Waiting