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 0x295b4fd76d3038e7aa8efef86f34f1819e3ee52e9f1c1e75bbc1453f1354fafa. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b689e4b9-1fcc-4031-bd23-aeb967ab4595.json and https://artists.proofprofile.net/proofs/artist/b689e4b9-1fcc-4031-bd23-aeb967ab4595.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 0xcf00433f65874d53572a75a1a190bcbba9c59eb0823e5ffc939cbac4ed04b11b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEPI82439762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f8b103ee16a9b4a215a7dbbc2becac2289e246dba24833fb8c71f58b813e8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEPI82423039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350af83b0175327f4d6434aa5332d8f52a2aa0ff79995fcbdf52b7898324d01. 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/DEPI82430911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dadd9e8509bb08511bba96f766579178da8151ca3757d8935f8f8b4ff9d3f2e. 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/DEPI82439763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f119f2c8c02818c6ecca2a630366517c522336b9c839fe348df624d582aac95. 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/DEPI82439764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fdd4f118e9275b88d1bc8021fbbe35353ab14834369f226bc6b7d099bbaffd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEPI82439768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f4806b8198e6efbcf3ed2b86e0e1fb6d88ef603ebeaf98532ff8ebaafecd11. 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/DEPI82418761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8310f7b86d6083e2c4068792cb781779fcec2625bdf293a1035a46a7210566bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEPI82439772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bc75e4c20ecb73b76c17c97c4e7c77309188fe0b6a22f002bdb0849a8e8327. 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/DEPI82436253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55848f07e3a0d7c262285646161804c92c861e1dc9f1d055fa96d4e58e7ebd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEPI82439773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7756e5227be7ed5d56bd683e7a90f541490f7358afeedea00a905e1bb2ebf695. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEPI82433099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02894918949f2c3ede3a32dacd8ebabc0a6c73e51392bac843dfeb65abe3a841. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEPI82439769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23899de4e73c1ea7d8429eb32711075a3d5399a0aca3cd24266fa701d641c238. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:44:03Z), 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/DEPI82439770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22e7a7778a7e67af3537b631fba890ed74e0bc340ec793f39c97805d5c0cc51. 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/QZMEN2498376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecec757ebf50aebda32ee02fc7d96909737c4336a12bfabde19102574de4a74. 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/DEPI82436762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f1ef92fe9f1f975f618c91b7b66614f4ba74be1f3a11e58947ceb2be6ac6a1. 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/DEPI82431083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350af83b0175327f4d6434aa5332d8f52a2aa0ff79995fcbdf52b7898324d01. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEPI82430911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691136228da29e1d5587bd024ee797dd8da68b6c496a17f0dfd28310f2250b2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHN2206086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5877b13b9a35aa3b1dc023775b2a7e3a1e153f90d8aa1043198c1f890b540d1f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZS632252887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd125afc6893354a80e3edc8f680f043000341a28e8cb3300a28bdb2b402cd2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMHN2202326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d57bbdbb50608e937e9c06fbb259953e9c486125c68cfdb91ef6e5f6cdaf69. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS632288615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb0260fda695436f7eaa03954f36e4912c7fc54940ff47c993f2c562623eecb. 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/QZKDK2208275.