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 0xae7652921203d378378557101aeea6e70d7d80f04fd6ac8fd861232297568ab3. 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/17a6fc2e-972f-4a13-a73f-2a87dcce1e93.json and https://artists.proofprofile.net/proofs/artist/17a6fc2e-972f-4a13-a73f-2a87dcce1e93.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 0x3e052460f844836e339e1a3a12f382569b7c037d45f7391247ce4f12a491c13f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:27Z), 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/ARC571802029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd05342f067145751c1fadfe5363bf5d93701ca4733c4c75408f7f461c7449e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ARC571802037.
Cruzando fronteras (Versión especial 2012)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77398a2d41af50d4abf30a113470792de069be51ab0bbfb65b8c75294b7a3017. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ARC572002836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d4fb25b5ef37cf96bee74da99ad443614a1d4781e063a7aa1c94613c5a6145. 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/ARC572002834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7bc80e154a810a79b24b9341bf3153286108f4f41e5bbfc3069c8057b2e241. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:58:26Z), 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/QMFME2332474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6ae7faaf08f2d9a3cf012f8f5d5b35c78e3fc92801f179ac0b38fac1b02db9. 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/ARC571802560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7219a528778d9dc49c08cd91301b5fdf9265bd0b96cc9bd09313983069cff0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARC571802562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1cb4a200ddcefc330e5c5f78fd1ff188beb6cb257d9c67d713e6770467ef76. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:23:51Z), 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/ARC571802565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c97406719219517dfb595ba2c71c821935a01bdc2fb73011dc9e0d520c3a23. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:47Z), 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/ARC571802571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fd0bab9308b78c8c870dc7b3b188f9068156c81a76b198d72f424840b888f4. 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/ARC571703046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2334fa35e8250ad2fb04ca85805f298e15e99640ffc01a154d9b05cdc170258. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARC571703047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa519238d63a61fefc178cd906c7732544c71b7ee1aa338620598df545df3086. 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/ARC571703048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef1a2b73b1631d59beac57a1b0a015ad1395d216c4ad26d4161ed8e43f9ecad. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:58Z), 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/ARC571703051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ddf8df60bfc48061dd03ef32992f22adf0e7a7c8517adef19a336fec50fd99. 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/ARC571703053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652cbd5ec08a84c9239a39fe23961cc4b82d891ec95a8e81325fe446f9886719. 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/QMDA72336758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527d653f7b4776b361dc8867b71ecd34bb678329e439617661c797cfca30dfcb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22459746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9b3fbff35254d3ba041f73097899a1b1cbecde1cce88a33b7757a3ed9c0e1d. 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/USA2P1557241.