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 0x19b4e2b23e2692d275e613f30373b46f6297953509475b15bd462338c310edb9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/605977f2-15ac-41c7-a798-bebd211ff11c.json and https://artists.proofprofile.net/proofs/artist/605977f2-15ac-41c7-a798-bebd211ff11c.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 0x73b8b5ae91b44691b60651e0d224930abb6505a8547fdfa49425f3d349865be4. 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/QZW9K2366954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61567351210d46a3f2016f38fd0705ab0989982339b846bda564e4d62947ad9. 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/QZNJV2357465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829fd59aa06a864e0177b607df755e9aabb49452c1c37f47cd9fa693276bc5d0. 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/QZNJV2358048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea7bef1c5e03f8a8b4f5d313e07d80df16e1900f2498974dc8604c8257c5a2c. 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/QZGLS2326128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed79bd8b3574faf9236545383260b01be66293441177658ab2b3de6952fd7d3d. 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/QZNWU2122431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca01a0c78d80f5581bf2c369cab4802546bc1d0aeda56f7fd59ba16d37bfaab. 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/QZNWU2122433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57db78b6e65b1138987c63f499023110128f40590c1b874d5a6dff7e060fc18c. 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/GBLFP1851542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3725b108889d5140f9a8908f754dee50a1e33020b2acc0a54fdc75b4e1b21c1. 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/GBLFP1851543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546e37848135e0ba580cd61520333214e4642b4bfd3520ef63c6528838b358f6. 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/GBLFP1851544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9f92c9f912065ca5fe90197f5693384731d075a5e36c7c3586d203f3eaad96. 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/GBLFP1851545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea563d4290319e51c79a0c6aa1b89de368f1caeea1b87bc441ffb72a6e494fb7. 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/GBLFP1856105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea5c30ceda3d85b7d8d668e61be2d8a991b0f35f1a01455783d1c8c18e0441. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP1851549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14937117f3f559526e6d5b0e728e212544ec926fe905b6f49336bb64302946ec. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP1851550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac26a8964a574459dfbc208e5189c1d092703b4366e9bd89e624c763622810a6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLFP1851551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2e05e1cfec30802ed28f72da3c9858ea53e9cb76e175eb2a6f91a564f142b5. 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/USLZJ2209185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be7116c59614677861cdf2657eef579451c8d46d4803cfe7b82c655a95190a7. 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/GBWUL2037041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2710b96e426c0ddce2b7090aa5ce5580fc10cc87f810115875a8b38139e06cf. 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/SE5751972068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e61371a1db5fcc51db8cc81cc0e2eb1ced39767b1a17b78025aa2afb99a62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDD2331924.