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 0x085b274ee2d75bce895a74572b047725f775b86e2b03f1c02bbc4f78013cbfea. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16650ef3-fdea-404b-8590-1457cc0f20a5.json and https://artists.proofprofile.net/proofs/artist/16650ef3-fdea-404b-8590-1457cc0f20a5.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 0x004aff64993c0cb6792e8cf8dddc01e6cea2062109a4ee5f8dd093cb87ee9531. 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/UKXN22540898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b7c16a86388b442fffdda034b784e98eff627120ef9f5159d9384075bc03d7. 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/GBMA22533200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111002786a23f01000a20acbfcda9c8934f1011f3a30d968726daceec7ea1228. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GBMA22533209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69b89f8ffd2fb5768ad94c1dcfa710448e3d4008bacd5f49f4fae1e5e4969ec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMA22533205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56648cc4ca813f1b51c547a1e3c3d2ebe9c2f70eed6d49c129a98d3bfe2a752. 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/GBMA22533195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e29dabb0753910fff3893c98e0754b36ffec43a506f19298ba2868de7e10fd. 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/GBMA22533194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56988613a507ff71b8b2609189d25d6ecb8714a07cc9facc5d1ecf9a34933436. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBMA22533198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ab7aeff2a88239fcaa48bb27d516d5df71ef6d5685da37232829c09bbb844a. 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/GBMA22533197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b39109f10f543fba78efba71d307734d3d6f009a0643bf49ac9610ee02f566. 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/GBMA22533199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215d5eec5c273150eb754e293769798e15b7d84af56774c4ef8d6cb4b5e357ce. 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/GBMA22533202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b29d72ab628f1648265bdc506c0e6427dc87617e0eb72475b01248d8464fd0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBMA22533204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c7248b9d25bc7437e326ba009d75184ddeb9540025c74c0891494fdd809f1e. 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/GBMA22533206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42e00794c15340b3175897f65bf59f9ff6954a210480ef811055344e74104b7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA22533203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4819099c84cd4f2db059a2b3bb25d8c8d368a633948e8036e493e2e4e3ec4a1. 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/GBMA22533196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103b3c7f1286c493c4a963eaa0c0c5f53f8fb1950f18ac4e9079a15c6447286e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA22533207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa523467f3696da7ebedbbb67e3de084847177b7da0c3e302c57ea04c87f4a409. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBMA22533208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca57f726166cce00a9e4945155d540ba25d3164fd8735138062d453767778b61. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBMA22533201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b2bd5799127f9c0e832136014469ba7ef51d2fe552ad885df096afc660204e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:57Z), 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/GX53U2678864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3395650a9204e59788c84a5ffbf328353dab3b5549db8b1e1f2fb08f9152161e. 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/GX53U2680525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d22a980f3375d1dfcb7b97a3f2f236f1c1c63e19a4c5e0d509fdeea90ac2b2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHUT2512495.