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 0x089659f39afa2d5ed29addcfd273d320b99810bf5480a61449d4056fe7bd8023. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/146464f7-025e-44d2-854e-3f9378115830.json and https://artists.proofprofile.net/proofs/artist/146464f7-025e-44d2-854e-3f9378115830.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 0x0d7d1820d35c919aba09aecc0990d789e8bccecdd0b08731e3f01c98542c2eb6. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJF2514751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9237802490a9d40c891d9a2395c4b0ffac2bc8fb9710af389e8d7524b095c5ed. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCAJF2563758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e79e34484677c0e7f5f8770baefaf0488001de91c3cde871be3da17ac4bf37c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAJF2565318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac864bbff76e496f3c174b018d5cf6963e2dd818f266fd865f4bcbce6eba3e6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJF2559975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9daa114ec696ad1a4c50ec98388bd9830c93912990d5e97f3066f9c93ec177. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAJF2565291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67177d26827d7144b9f3bcf172fa0ee1701d5ae651126dc3f7dc35f67905e094. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJF2565509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f09d019cf3efadbbee7e7e48a1728856bdb824f4ded3d56eb481216610cd3. 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/TCAJF2559992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa766cc2ddcf21990c1d9d7c095d121454bdae78801f829d5d1d61fbf62f86480. 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/TCAJF2572431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc134134ebc3da6d7833505d25591f2fa017e36273c910f38045ac27432969bec. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAJF2572390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66de81640cb7ca7eba8b36e041b34356c15064af9aee0149f04495e9b4242b55. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCAJF2574072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d523f77b93031cf67beb94d2acfd38d5653b0a2bf7bd077860f49b0e81a782. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJF2572308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4aa7309558ad8140c4c430902f92dcb1a50c2d10547e8312bb2d341110ce71. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:51:05Z), 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/TCAJF2572275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9024ff949a2b7d8c3609ea4675ecab62c0126749443118833e16ae6bb1c8e9fa. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAJF2572485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532ad98ae2fef2dac835da9a989f7e4a58d6adb4b711e92ac55889c6e9ff08b7. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJF2574422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cae1601d56577f020741965c8a8effc1e998cea3ff9202fd08e16ed5fbbc74. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJF2573791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daa68e2a6f18271374b71125c1526117b7295d2dbfac119785979bad060ec4c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJF2572715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83632d92942bdb67a8fa77c35a514b1eee718f53ed24ab3c48320c3b9887f857. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:28Z), 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/TCAJF2572139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eaa7f5c486337bdeee07a7b2e1f5eaa3d3f1ded9c191488451e3639cc62f46. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJF2574005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5c3a6a29f0c11794abda03f6f1ecd0e705795d2dc07d7b26eb44bbec8b212d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJF2574501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fe9c722e47548088446261e3a73a8fad52165325f78895763b6f23c76d2b16. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJF2598780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe7f27abb6dc3eba77befdddd5fcaab38ce26448009028fae27ce7aafaababd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:30Z), 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/TCAJX2566064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f47a0738f09fba29a544c887d029dc39eae4b62aae906bf130d294946b0ff7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJX2566418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f586e9e395912deeef2d02100d98b76f09f54e1ac4eb74a49b0592b281fe640. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAJX2566388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ed159d32e61c793eaf50170c6d3cf8c79d26a21f7641761f59fcb689c0f766. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAJX2566391.