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 0xb748a7f482f3dc0af88df279624c1c028b4c2e18b3b8399976c40388f8bde25c. 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/b79ea903-3a7f-4b0e-a1fb-87ef65035cca.json and https://artists.proofprofile.net/proofs/artist/b79ea903-3a7f-4b0e-a1fb-87ef65035cca.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 0x5d973056c9d090189d545892d9a4757ccb2c22dfe999e4df0cee90b2e689cef6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:54Z), 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/CA5KR2425418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b3b7c4c245623caa2dd18622d76c9b3ee54317ab6ca14fb8a64c153e33858. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GB8KE2407816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a05f40a0d71f908f209d3a646e771f4f75afe6ce2fd5bb1b04f72403ba7af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKZGC2404325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291389e3c96442283290236f3da81a6e93c7d0795e4db88a2e1d770d7e7f9bf1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKZGC2404328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6cf0afdcd38a975b04b5b97e823b5d1aa91b0d7c36b9ea18f357aef1e88224. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/UKZGC2404330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee623321ed64df4b7ef4af3ec7c8b49a2c7ef1b1d44dc1f5ee5e7904c3bc077. 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/UKZGC2404349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdf1fa48bef48fcd216632cbfc8f8d66ae5880dccc08ca875216cbaf0c94ca9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6P42473019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2636fa646e749fd9b8f57e245f882768f16d41532fa77f08ca678a1c48d9b862. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKZGC2406539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd87fb9db3b57f99a9aba01d2c3f882c963bcdeec1f19348952a05eb5d418fb. 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/QMDA72451945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4217fde1f1b4f645b63bd182ea638507563ea6576ec81f413515fc5a50d13243. 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/QMDA72451946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd48f25cffe14abea6b4a72507779019d33d9335b3cf407d155ac1813c32e3b. 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/QMDA72451947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b1a5b90830dcc36b8b4b0f432a94cc016ff2b29fac2af3a5edbdf4040d566f. 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/QMDA72451948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5343db47c04023b6502be55ce5e31e3a0cfd2b3da4b918f754d278754443b302. 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/QMDA72451949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74966830000d8130eb653a2e6c81db4b77451b58a37f0b5852d40c8adab2bd89. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CA5KR2505258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8dee57fd5e2f3b24c135a85cdf4532ece685cf92a3f79a53ec239dabd97ea8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/CA5KR2505259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a37ae0e008e3da04855ad45b49177f75eb1cb9e682cb5ea86642cc1ae7a595. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CA5KR2505872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6b7229802812d6c4ceb24c6e1b7761176ea374972c28d23de723b778232821. 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/QM6MZ2559460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c12fa45fde159f0a4be1976804522628f9f29e24870a4a61366ef5e3e533f9. 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/QM6MZ2559462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cd3e0a9fb23a49788777371477ac99a99444ab95ae5a2479a46ceec5621bb5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6MZ2559463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a54facc8db1e7564aeb3b59b3a3bcea6a161791c677bdb2a3df3584b3117935. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:39Z), 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/QM6N22570110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945825f9751784edeb3f57d79f0c804d46de62e0747d048d1d0db7bfddffe8e0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:23Z), 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/QM6N22570111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b0d292b8a3b26c4204221b63f069bd2a12bac393006a7966afaa7c28ca60f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6N22570112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95fc79c6a5462e7c250e257c0c9401b6657528171ba83b128bd81ac626ea169. 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/QM6N22570113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a190d3fc573ef9b4c9a3c5caa8d7c946b20df5a761add7807b3fbdb5a44da40. 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/QM7282502151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32f639eb274d92851711ac49cf4784530127df6f7591af4c709bfa005ea21b8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM7282502153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168b6f839d81c0185ecd95f5de5bcfc561071afdf54310f11269b4ff610f6acc. 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/QM7282502156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a6708ee4debbb523fee538da6cee4682069d77758f57a60c922da7108e9602. 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/GXBAV2117239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d01a05f396902fb9415bb814a5c45bd2be475e54a97e003c0193a4a49626e98. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GXBAV2104862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ae3ced74a73733af6364bae0edec011146fc69f4850a63f23fdac42f1d7790. 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/GXBAV2057175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a0732dbc3875cac9a73dfb5cea002190e5120006027494ca35506a5b0acd5. 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/QMFME2548673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d07f51588b4df4edad3cdc190bb91e23a63b4a576bc52e8a76642efbdbc6a7. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:26Z), 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/QT5M42564680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ece3d965adf21093ac506632afacd7cd54c482729ccaea78ad7fd774235c247. 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/QT5M42584255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e30567ca7fe456473b9b25733fee75c280ce7ee9cbe324ca2740a5a6ef507f7. 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/QT5M42567672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2692bc294dfb50b220e56425286c96f085510584ed638c257bbdffe7e6345afe. 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/QMFMF2509321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc052eb0ab43a99ac94dc9ef13760ce7540391b371505f2f5c06c6d2568c92430. 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/QMFMF2518353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5af872d4b6551e2f6e1829b8d022bd709ceb25f2a5e7b4f37559e7d1c6ae7f1. 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/QMBZ92413608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a2312af2553a0ebe7a4efe831e90b15e9f834f426e51edf8e2fefbcc2311d0. 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/QMBZ92413609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ccae442060cae385d58fe3e2a6491b343ab16df6ba66e6fd20879c3060f2bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42510366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb50f2545d2f89877eb883030f4214e537820f9147bae9dde5b81e4f4072bba. 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/FR2X42510367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3a5400df3ba258fc4c9c772fc1491d3f7b3f13377c2e743bc578f0c8bef693. 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/FR2X42510368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727968ca36de638b66392ab5adc63e7661265bc4866900cfd28daf790c4b19b4. 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/FR2X42510369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb6579f4ed876045c259c217f5da6af90979ac883ca851f1d3842692a2d88dd. 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/FR2X42510371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772fc6727f45ca18f0bf5e4a02a2dab15ad7aa0e4aae93e93b8cdb0e203308fd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMBZ92413610.
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