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 0x5d2cb315f87e3720874bd25bb4e1c35e69dc15bb1e07696ac86a06b2b6c9b54a. 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/ec81fb32-6a0a-4d5f-8dc2-e3d6e29d41b1.json and https://artists.proofprofile.net/proofs/artist/ec81fb32-6a0a-4d5f-8dc2-e3d6e29d41b1.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 0x020ad610716b8b06906b8203422931087353df81bd4fe1d84421a8680dcf1dcf. 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/SE5Q51701036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba3ed7989feae00e148137b7b9ac9b933a0a11a4623df902971c8a46a8320ec. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:28:31Z), 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/SE5Q51800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf600b6f0d7089a511ea4835fd8e2670135fe4c853f71f678fc29b382ce0e75b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:02:23Z), 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/SE5Q51800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613a7fc7bae3e8e555193fef20041f4372358166d4ea923900cb9aebc730faf6. 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/SE5Q51800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b087f4ba553ed41dbc7f2a4f5514e1be204777c62dcb086e41ade45fc6af34. 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/SE5Q52000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e44f4dc3781895ce12a26a4e44e4f7ef35995d8055bcfa485b87019d7ba14f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5Q52000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34821e823ca63c5dbb6d6718040b5024f753c770438f4a943d1d406762c4bbe4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5Q52001788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2172d16f551d065c1fa848e56bab54a2e9e719b6949b26f4ead6d41c6707ebd6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:35:20Z), 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/SE5Q52001846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90afce91d59a02c2a71f85f895e9a1f9fe9b5d8d60c59d7eaaadb38e9d3392d. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SE5Q52002650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fe15805af9e3e625c5899c58b872daf0ea6547b1b2acf81e2de84ab6c53c3c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:23Z), 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/SE5Q52002827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a803a8964924ebc4ca655f781c5aee2c3f09092834d32518e9c60b4072cd10a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5Q52002826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56484593de1539afad400acb625b3e02be51a35d782cee9bbba511993f2b0d2a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/SE5Q52003253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad92498fc21dad8a69aa1b523c86321fa45e2512c8da215f623f3759b78b07e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE5Q52003835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3edd0316d22e95131bdd4d0182266219ad0e63537c3c78dc2db5430b8f48ede. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5Q52003868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb2c409a10317b94a2434f2476275e5349e48833db169ac71b3f3eb3d0b028. 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/SE5Q52003294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96d2c9f4e93d639d123396e9028987007fb3e520b2671f2264d1a83129e0ac0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7460c94cf4eda374c999176a7cb4abe8fe36a3425102f5d24f2083af3c7dba. 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/SE5Q52004228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48175db4e69881ca6e4d71254d0d12ce8028eaf33ee70d34fe357fc24a31d189. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52101212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07733a0e7f4eeaaa667b545b77d3726429280f94d15809b1bfef0838028eaf45. 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/SE5Q52101921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed72544bb1cfcd4b1ba78f7310050599a4a3bf6e55f08c3e93e226f5a8afb9db. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52100937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e6ad24b44f4b046008f74e67a8b44ae20907762733b3f74d7b75cbf088bf3. 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/SE5Q52102572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a187ccd092a3871e911a7b18673d58ac06a38cfee8fbbaabe95464e76ea3d7. 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/SE5Q52104537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688bc966f4442009c95cbf599f8670326e929536d43613100e20d9c7eadee465. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q52104481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db91fd4877380877a209c1493c407ae36f5d10843fd8c4a8011a8abfa57c6c1. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:56Z), 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/SE5Q52200519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088a1d04458d54c6e4b5cd276bf6e147a6bf71e9a58cdfed8df38518d10ae5a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:06Z), 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/SE5Q52200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd793b9df7502e990bf47ad7ee41ba662f19be39458c3156a97855ababeec04. 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/SE5Q52201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5997d06642098d94a93b74705972889aff2914c4d963ff8f416897e33bbe16. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE5Q52201141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be686821a6df99772b78bb6568b5693635264eccaca4b4ce27d7ba2567a28a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:34:39Z), 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/SE5Q52200763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6029d9ea2ea6ad69dceab1625ae5e14d0723c8f105b5ad5b2dd2b7fb8e973. 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/SE5Q52201858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0c423d83d78dd61a36d3d9c8245e324225b3aae149fe2ac544bae9dfe5f8d5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5Q52201565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1104871422d2759fb282ae95c5eea2122f9cfba73e72a18c3ff8401c69c4b2e9. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T07:00:56Z), 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/SE5Q52202564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb051a77feabe85d36a2ef1113e13635172953db81fc9d865cbae9a892df0b1. 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/SE5Q52203203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d7586e4c0f9ab69e202fa4a562f9a2f0782097fa3181f708ab5b90a316b63e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SE5Q52300376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf226f354bd587a94ab86d9e9784e8c87946b4856e5b3c1cc56566691cf2997. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SE5Q52300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9693456f9ab3576584ab7fd3d59960f097f41676cb6948562eb3d3972623d3fd. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/SE5Q52302408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38199abc793cea448551f147c0e1edf707529dd0779b51b90ec58b564472b159. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:09Z), 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/SE5Q52302415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe024251633814d5b2d44ba7ed1db80dce61e70f7bca749c75d358656e28d66. 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/SE5Q52302814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a60d310ce9b9ae491d80b72fcc0ca4e5f4f8b91024336295bc1ab5576d7b673. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5Q52304799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ee471299c0de35edd4d05bd8e150bbe6d8f8d35ca72ec1b34eb6108c17854b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE5Q52400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27173e5242e1321984b602bd697cf7bc7e479fa236e9a068774d90cbac4eda83. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE5Q52500739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec24d1360ede7b972c34cde10c25cb754d19813c3b4abcf9b906a38727e0e2. 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/SE5Q52502037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec0fa41a06881476a066229d6d79e6d05b61b904535d8df9755083fe39e997. 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/SE5Q51809205.
Wonders of Nature (AGST Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47333ab01f4bab3e66ec890e52e920491d85198ab19192131bdf199962d578b3. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/SE5Q51826882.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch