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 0xadaf47ed02f4b44f2d098cf1839003bc8c579e187126ceeb313db137efcabc71. 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/9d64898a-17cd-4c6e-8063-4fc4349fbe97.json and https://artists.proofprofile.net/proofs/artist/9d64898a-17cd-4c6e-8063-4fc4349fbe97.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 0xcd40f56ea6d0f8675920aef67132b886943540385f250ca9085059bf2b5b5919. 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/QZYFZ2443904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53bd96d0d65d5e7b542f0c3682c02eaf64315d53f7b797db1adfa48695599b. 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/QZYFZ2443905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bffc0c37db7bf13d054bc271b6b89d09302c3c382f9d57d3d742f8d4093c64. 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/QZYFZ2443907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4345b0e36ed4ef57d2ac8b98369ed1342d43b16e39de6fc4b6a0a831ba95e8f5. 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/QZYFZ2443910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0577bfbfbd07694fdfaea1598c9f702650f1ea3a4af38d489fdf4e4c4f31bebc. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZYFZ2443915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac72b47a45c1d35832c93a1ef1cf9a0cf4ddd35163ae31077a6fcad1d4ee098. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZYFZ2443906.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad266f57472791f4aaa1e7ac06cd6e7c10c0bc2e01104f7ecc89e37b173793d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZYFZ2443909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbafc10b4d97c4e37423dd46e134aee0c5e2398d6660d7ae1196abd538146f6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZYFZ2443914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf8b92a0390cb2b4a4df95db8be7e0d20306b98c410e0c9cae2d672d06514ab. 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/ESA012379249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611ac292f6a8e50169941dfa7a440ffc854abedac7670c038761a7486193f573. 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/ESA012379250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30afde4bc0a775ee3214edf667662869b2b6f3f5231879f4b0c255356496b854. 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/ESA012379251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b4a3b8e3122240e38156889ca8f0bdc8c00a4871c0678f3da175f97e76264f. 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/ESA012379254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9b4e7f0040042b833c3d015eff775f8a8a579ea0984b11d89755f1ba6bdeac. 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/ESA012379255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72358cac160a8a09f796978427d5d50c5720494511033ef89da791deaf2a653. 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/ESA012379256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e16bd2404d736304eecf7ebb3bf99a3032f28ff7f53ac9512a051a5c599ce. 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/ESA012379257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f21d62d91531c6fa1fdbff26adafd1a49f0dc437e834028e415982c2cc1ba55. 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/ESA012379258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776258f98aa9e374dbd7f11a0e60f5ab997e008174cac7ebee4c849baef0831. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ESA012379252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cd7bf1b4f84b8ea25526c262fd17a751e6ebf024b2d9553c627814a9fcc6cc. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ESA012379253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09bc38da4972092d0c1c7eb554f5a8b2bb92176e4c0766f16b40b6303ae4d6b. 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/QZK6N2287196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33db38706690295435a2803db655e32c02362f12dc02790786d27838aa8056ee. 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/QZK6N2287198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fff2b22caba59567931686833281f90c434a27009757961d6eb28594ebed9f. 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/SE66N2235233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142d29b3f28f8a9ec9c1816560d7f647ad80d33134bf815101aa2e43af38620d. 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/SE62M2209967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33a1851b6b8d2e2144a8236da788191a3a7b11990c08172c0a0ff4a9dbb224c. 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/SE62M2210768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda909daaad204aec95f1d639a8f1fd4886940d07f6de52467f404b0380d7e33. 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/SE66N2235234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e5eec57a839575272e59bf9f7558f58242504f11b0218b2170512e4d1f43cb. 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/QZK6N2287197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fc69ca4e0bc686d663bf63c3b5ccca055f25c8932fbd512c2166093bbc20a8. 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/SE66N2235235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a2358ab97d842a3b1812b4f77929993274dbb0c966d3367214a5e80a4b3053. 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/SE66N2235236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04aaf3d354016f18a731e757d93236bda0dbd45d99af68ddf5e36579c69f336. 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/SE66N2235237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72662f2e62f4fba579bb5decda32b473590869df03224b5799fb29755d8bc7ae. 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/QZK6N2287199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fcd9e055fc979667b4b99a75128fd5dd76be6d9b6dc758c0eb16d1aa6ed959. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/SE66N2235238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edc2a364a741a2c22aac1f663e7391646eb6bd1fd77707006bd53c94e657601. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZES52414340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58905a734d4e27c96b3b289858c5bb130bf94e479a067fee3cef91a280e859b. 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/QZDA52426117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a882e7c48349af87d8fa37f8f7950356498083cd318ceb2571753cc8832fc. 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/QZYFZ2443891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa5a34b097dc7ca35ee9da520808dfc9b80be5e05cb71e7155aa2aa0d55130. 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/QZYFZ2443892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41cf8cda84adb5a8b8886fd676c953f7695e3f8267c0dbe07fc558e654ac10f. 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/QZYFZ2443893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5677039af09bcaa41ef714040328902b8ec91b43e6f0d7a50ccbe9a632c3d827. 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/QZYFZ2443896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e42152c64381723494c9407e859a4cb2a9bf814aacee604f3a6c45394df3cde. 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/QZYFZ2443897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159a738382aacc78d2d1fdfa1ee21559f77e42e2397ca013a3c7287e486b527. 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/QZYFZ2443899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7a61b90c9a89071ee7a167ecebb42a0d37fb669f8562fe1077b9e6de7a84ad. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZYFZ2443901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e271145db56ffb829b5bbd021b993cb2090f13abc77911a4c5b631348157b91. 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/QZYFZ2443903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa971a07ecad97a6108a45f9a70cb4e74487f8aed9eb472b6c3a74e995ff61122. 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/QZZ7N2444775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfc44f6e1386d2a29158d08a4c7a241681b45176b65c5072a7ee28dd4f91099. 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/QZWFL2429592.