1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcd8fb6704d24fdef4a7a7c72d0f3ccdd376742de98d6cb99f0c3095f31dcd088. 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/9ba4e127-4785-4aa9-9c20-aeeefc32aa41.json and https://artists.proofprofile.net/proofs/artist/9ba4e127-4785-4aa9-9c20-aeeefc32aa41.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 → block OTSBitcoinBlock must exist at that height 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 0xa7323f8545905514ac32ac64c3d7f5e089fe0c9ca9199402d397ff7c0e1c9cff. 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/AUMEV2362903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142d63b57f844609c8d98225aa6d3ee25416c53b2c72f0ce096462572a68f4a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUMEV2257943.
Gloria In Excelsis Deo (Angels We Have Heard On High)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da326a6353a26753f12a8c1d9d69fa205207fff4fe75ca6282ff50aeab93c7. 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/AUMEV2181718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad53f6466a6e20b6010660c8b8226c464a8e139190e78c2b79f696a5f20d076. 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/AUMEV2176977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c92590e3cab6442d8a66ea643229808ebae245787227b5da00de807e5c1edf6. 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/AUMEV2176978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad030b4ad1e5a7677513435ebdef67d254ff715c4aa47eefc6cd83babafbc50. 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/AUMEV2176979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9983f40d1b8c30e8af58fcea5c3bba48cb0c6fa746b0e4a51e8f7899e1ab51a6. 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/AUMEV2147951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6628b48299968545bae8fd339e1ba4125768e8d0ec134b1b60be54cd03e78f. 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/AUMEV2147954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b23854c2c9cce8abbfc491dc3ea28a1668d2bf48cc9169d7e3a75d3eb57512. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUMEV2026944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e7e8c593d2318830ba92a57656483e0ddb78c7c5e5f6f8b1ee0cd866ad34e0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUMEV2020705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01674d8b466a16b92b4c0e72816475fabc31f8442517d9473595f7434d3e1bfa. 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/AUMEV2147958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8d3df05cf2bd3a6eada504df20a4a98d0fc68b7b093ce27773ace2ad2bfe88. 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/AUMEV2020708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b23854c2c9cce8abbfc491dc3ea28a1668d2bf48cc9169d7e3a75d3eb57512. 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/AUMEV2026944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e7e8c593d2318830ba92a57656483e0ddb78c7c5e5f6f8b1ee0cd866ad34e0. 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/AUMEV2020705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1933ed97d5f2fbd5898536556ada2f1d534dacb6fc53bbd7efef89a2e35c8863. 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/AUMEV2016382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c9fd23ffc248779ca316a0f04703c73db59e23ed7616ef2ce3a312c6a31e70. 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/AUMEV2016383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aa86c36b52ec453c57aac0422b5dc0347b4a366f8d9a41aa6d596a25dd2e93. 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/AUMEV2016384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a796d755d485fa95a1c912baa0d4b90e63f7bce72dc4d417d8deeb724890a83. 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/AUMEV2016385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd36e85b122d406dfee8a8a7f294052efef8a4bbe109b6ad022f372f414b15b. 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/AUMEV2012241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541d8fedb83f2ab1d076185d36c24324e07f864acbf95386d22229acfff2130c. 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/AUMEV2012242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58688af5b2c26d113e4beca305b343cfc1b43bc091645ddabaf4389cd8e74ca2. 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/AUMEV2012244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f13252b3598e18862c8d4d57bc6b41368e5042935af8e46a345834fc3f8dd6. 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/AUMEV2012245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf555070491aca1cae2eaaf47e4e3de267e58838e5891704e34f9b023c0c9ee26. 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/AUBEC1920006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8801af4cdc4dea869d2db0d7308d4afeb946b75978b24e67c22df7ab751d4110. 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/AUBEC1901521.