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 0xe55dd0b19a4c33fbe03b74e4c0001d8d4405883fe224783d9b8a7f8ae1ba566a. 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/00b19a6d-e861-4e0d-81ba-59eab2670ada.json and https://artists.proofprofile.net/proofs/artist/00b19a6d-e861-4e0d-81ba-59eab2670ada.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 0x9da868635429c6a0620fe7e51fef7fd99c6d1c26468f1503ef5dce3935b6519c. 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/PT2DY2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8c8d517b1bd286a3f17ccaf832b15bbafaf2f64def44df4f221aab2078bf77. 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/PT2DY2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef5d0e294e069440d31ae0a6177dd84b824d58d4675114c9e083a7deae6c987. 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/PT2DY2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f3ddb8c7f0b4c6fdc8d608e765963d4031a3efcf971be42cfc90478ba7a87. 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/PT2DY2300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2c6b06921852aa1a8168bc8e6e806b01d6dc6ec90f40de700557dbcddfae64. 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/PT2DY2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3815b781c69843bb009f5835b546fd4fcd704e8c8577238a203ff4516c0e33aa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PT2DY2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4634068e92b875aa2f7b6ef006bdae59f03e30af956970d9dcdf0b9f22661e2. 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/PT2DY2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d0bdf1f19657d0b63910b0d6ca2b93774019d6e333740611bc84b256ea848d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PT2DY2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b943cdb9d0e584cebed9b3a57d5b567758fdd5ac7d656e5a009bb96eca1b538. 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/PT2DY2300615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f286c8c94b721279fd9670789026797def10af84c1f659c6f6cf49e8b0db53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PT2DY2200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe068780b5ac3b2ea43792eabfdf32d1e2df9a4006d024afbe6b0ae9012bedd0b. 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/PT2DY2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9271695880105270977c158cc42f6fa8d3637857819c1d6a56b17bed2436b3df. 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/PT2DY2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480db8eab43944e9a0d0906e531326fd9f9431c373e1083710312b94dec48cf4. 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/PT2DY2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea2a0aae0ee22255a7a6e7a4854e589376257a10895b0925d92f3eafee3fb83. 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/PT2DY2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d0bdf1f19657d0b63910b0d6ca2b93774019d6e333740611bc84b256ea848d. 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/PT2DY2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b943cdb9d0e584cebed9b3a57d5b567758fdd5ac7d656e5a009bb96eca1b538. 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/PT2DY2300615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f3ddb8c7f0b4c6fdc8d608e765963d4031a3efcf971be42cfc90478ba7a87. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PT2DY2300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8060693b648247d36cd22c532a02f12a8afa387f92013b91440ea07a7cea70. 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/PT2DY2300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f286c8c94b721279fd9670789026797def10af84c1f659c6f6cf49e8b0db53. 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/PT2DY2200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db312c30ed847a9c0c300dc99746fd7151721088fb08e48a05af71562c79cc. 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/QZMER2116185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54ea825e3384fcd4ef4999f99992f398c5d75b216157d0dac8375ed82475197. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNWW2189738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40b82d29a93b32229c64134da465178ca6ecc6cca8c784c293eaf8c733a6cb8. 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/QZNWW2189739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db312c30ed847a9c0c300dc99746fd7151721088fb08e48a05af71562c79cc. 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/QZMER2116185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425a7f4065dc58a42c2905f326246127fa04ab80f1f7ed17257c893dccedb195. 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/QZHNB2025889.