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 0xd93f7bcb68e59ff91c7d3c9db8fac1456e48989295433248edb06b39b2dc79ed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edf014f3-7548-4485-9e2f-c2babd7e2451.json and https://artists.proofprofile.net/proofs/artist/edf014f3-7548-4485-9e2f-c2babd7e2451.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 0x1237cdf0f41d2fae21e8a355342be6c992963eb103126b8ed307e638bb518545. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKFD52496070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d650b893fa1bef6d8de83af965129a767871fd99fb3e9e3f6454e9c9d565d7c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:34Z), 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/DKFD52496071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441f1cd4f8bee7a1df1db05d67a0c5a2d5cefa85d145a2f0d24164b4ac00bc95. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DKFD52496072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e03a60f0404a2c7d9e14b243a666234ce7464eadfd354568dc9a0c647d17f84. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DKFD52496073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a6a1f866ed39bc1fe1f01c1eed3ef0f52ecce08eee6a8073196b90aa22b5f9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DKFD52496074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9e8e81bbe714834e3d97516197df7afc5b3ccc80ed6b2b3d825e52f72d2517. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:41:26Z), 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/DKFD52496075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dc1ba7273e3c19829cbfcda0024260c430e123faf49c56937d9b806bdf1665. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DKFD52496076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c79c5448853af978a9f314384ce988754a8359db9cbad415dc714f7449d5532. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DKFD52496077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3d72e15f74f9b5c87e7ddb3ba8bf6b3bb95d61acf72b17146a045e15613faf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:15Z), 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/DKFD52496078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9d0350f7d65e52a9c04f091b3dd728705109e5270477d855e32f092b65989. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:27:08Z), 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/LTB601800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a94faabd9cbe3b16274eef04fc90087cf1d7c1a6b1ecbe2e35ca2fd0d903709. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/LTB601800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c98c026f134bbffc17ee796f16ff3dcf8abd03a39caa1e793b83b5ec80f5dfa. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/LTB601800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a18b009f60d727c8576d39391db343957059f8c3474c12c979f87b10c3b5bf. 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/LTB601800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b493886d0bb3343de66cbba857f923bbba7f36d1aefebc83d629ebbf2ee38d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:12Z), 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/LTB601800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b14f3b714f726e577b9076e2dcd598eea89ef155e94ab433d834dee6fa6819. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/LTB601800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4283249e90962f35090f6c344482f81e180da83a93c0f294a7fb335352a3a23c. 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/LTB601800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62f78551f221b79c1832371d9bfbc00f05c7b1db62d34095b59bb41902efce1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/LTA862100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc172669ee0bb529172bcdf9ac011b22a3ffb85aae25c5b01168ded276d8ff6f. 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/LTA862100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ec3438bafdc731de26809e06a40003640aee7b5f2b6d5d992685a3f27a252c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/LTA862100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae3e9c4ee6920fd13857821e3d5a24f2ed224630c1c15acdcffc8be7994dd4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/LTA862100009.