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 0x76e1da496a0feb6b7400757cc113c5c115d1a3f7e299bc9f410327306c65cab5. 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/e158cbee-cca7-479e-85a6-35c842ab6cd2.json and https://artists.proofprofile.net/proofs/artist/e158cbee-cca7-479e-85a6-35c842ab6cd2.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 0x3b4b969b7e56d591586e07908ef23c60be64581723d2045cff4b245e5d0a7df5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:46:14Z), 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/USA371483320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aec33b1695c9a951449a8558a918314b3dabc9c43a45472ec561fadaa2b570. 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/USV351335657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d8080ab185aaf382f5024d48653edc25d3bb6a484301dc9cf326787821c212. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USA371575538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc56b993008cd19d28b8a0c53d10e222febae3d57faab5cb3f9ee5192f75f22. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:54Z), 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/USA371597158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7430cf7867088181d54ed7e3d36313d1451918fd8cbd07ecaf427f76ac7423c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:41Z), 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/USA371597163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5d15ff3718a0204606ea3208cd14bee4e92f777445317d0468b25f05819ec. 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/QM6MZ2046488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26602e16041f86a695b3bb88d05999ff697ffcf5392935f29dd502a38d6de0c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USA371662016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d85e46c59e2d5fea00be7e91c6d0be121ad142a41a602aac76a06824c968c5. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USA371662026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19dfb40d41edfa821891d76a19eb1af289aa4161d94ad38f45ec925abacd977. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:38Z), 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/PTVI10501343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942a9dd0c91ad5ff85c4ae4840fb022afd64ef8e325d2097c69842cf4b629183. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:56:58Z), 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/USA371675098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d5c072955dcef631702fd181bb38755011b9fb2049af0882d0f2623c5a80c9. 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/USA371675104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a6044d9359e1e2c43d0d5cba811ab501c0face47e8d15b353db30da9330a67. 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/USA561150795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a89643b9323add6a52b9b9b5be923eac0bcd53e5ea19344e8c45a75f666031. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA370979466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1796c0dc6edcd788daf31a4271fb67b3e1427afd10624ec99806650c0cf7e9bc. 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/PTVI19400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe449e7300797f1f6d97d4b6eb2cfbd702b69206fb192d2e12c687cd1ea157854. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA561262671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3192407cc3db7d5066d11836e1ca4478eb629fe47e03f972217263c2311b5c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA561262672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f17bdb197750bba85ba7fce862cb0cebc4f4e0ca771b80bdec80fd24e66d13. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/USA561262673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1414ba5a0938bbf92cdb5fac1e80b2e746118a5def5756ada0b4304a96c5754f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USA561262674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e54c6a016ebcc05f101685ecf00ca4d62d15bacfa3eabdcf33157b6bc8f68c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USA561262675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1215c8e49bb7887a6e66c07bdc4440a4e8d92279b5e7a69991e6121959b04c7c. 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/USA561262681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8696c33c4a5096faf378bad5930c85bae43d869c4a2bb7d110bb29dba566874. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/PTVI11300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1ec9d537e6c7fcb204ca1c8ac60b6cb90dbf4ba9548cc8e24777ceee404e2c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PTVI11300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad49296cc3f0756392f7ccb5016e9c3cc74aec1e7b5a1fbe4a0ca1d9c031f46d. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/PTVI11300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd71e8302c74b3a03586d2a7a99dcf70d49808078557969e14d841333ba7f8a3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PTVI11300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2da46b5a0e97736643061e4410a4643930cc9ea8f42bbac1f65118b9ed1feb9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PTVI11300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a6fc9a819428cba14f381a26102a1bf49ba1a3f3ec7bbec7d97b5252bec334. 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/PTVI11300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72c7a9c8348caecf424b8aa3f2cbdcbc9d8595401f396be55a01a5347b281a2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PTVI11300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34de77f93b764fcedb019aad4cf44cae4bd7b515c01cd542b6b0d4d2690129d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PTVI11300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7a8520cadbeed8f7fd428bd0e33d5fa872e957191071c017851c58c58a62db. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/PTVI11300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85159d1a490f17641243298e845612b8dc52548150a99b93cab743b61adde23. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/PTVI11300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac7dd2fbeaaeab0f8f995b756e30cf542a98a86ec04dc3a447772cb3975a34. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PTVI11400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337a7411a54c05d5e63dbbb623d13c9c3633879533f1e1959e049262afd52ae1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PTVI11100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6832b6562c41ed3b6764caa5b40540f85d7984dbee14a6dd107ab8bbdc91e3db. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:53Z), 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/QM4TX1521956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21161eb59d6af357d88f90d3fd7264d1a545ad6bdb89e527d4bd5d1ade0c4ec0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:57Z), 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/PTVI11500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5109e62b595cc7e29755fdf09d98a2d5e5bdbf7abf9292ef04d18032444276. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PTVI11600144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa364a9ef3831c5cc6625561627b861c0641f741e83bb6cc89cd86ec56c5a3a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:00:59Z), 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/PTVI11700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7042f9a53180cf5b9c53e3a4161b289fca3356e820524f6cebc747ef1defa0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PTVI11700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830112f81bb9cfdb3b486599207e64d3da19e600213c4c6ead64b440f14d310. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/PTVI11700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39500ce35cbb16798be42b39813509c60a3d3adbfdc1d72183b6f3ad61ac5ea. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PTVI11900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a3c38c2bcafc73fe64b37b99628ea0ace45956e9e8b705a83750281d79aa71. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PTVI11900172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffaf2a49f17916871bf677fc400f7a54ae6ee1fb4538e621fc9a05f485019f1. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/PTVI12500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a4e5e30861852083416776e93e97ba8199a5cac7584a9d6ba9df0185106035. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PTVI12500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8590610d9071201cd5f864de24afb723ad93b0fb8f42ae334a06ba8479e458dd. 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/PTVI12500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b0ef321ca9cafeef30a6b2e88048812ab1c7123c3c8a885ea6882a8cf1f59. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PTVI12500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c884d4c1416f4c636c36d8cb0296e271dd891f53d259b10a9f11601ffa2582. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PTVI12500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc91711f68a62b6afeeac54c77573f407327ab4f98ec705690ccb1ebf22457f. 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/PTVI12500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e985dc7daf9c432e525de6681d8bb99605af5dda978ac4580c84999d3c675. 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/PTVI12500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e02bd31811e376298d346b01b01868542380194e45107dbce232b4663cc61cf. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:27Z), 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/PTVI12500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c39d3e65719c47512de1c78484f3df1b597210622a57acfa5f74324c1b2631. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PTVI12500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394258a1f78f795a802b32af44a792a21567e52cea03852e7b6650fbd7ab8acf. 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/QM6P41994227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0703e96942b9d6f1e6d3a07b9baae9e394e06a1bb3222202ef0cb24832720f38. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/PTVI19701381.
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