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 0xe4b5c4fa0052b96efdbef34c1445ce9a386a5da9879de63d985e94b95086a72b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/291c4d24-46be-4d4f-bde0-72277fbe8755.json and https://artists.proofprofile.net/proofs/artist/291c4d24-46be-4d4f-bde0-72277fbe8755.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 0x4a11c9521e90d4335d7b5fd2ea547b8710ce7839b508976ba70d9908a9472933. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZ5AB1772541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd484851996296374adc39f0f5b8dd38cc6a36565098bda9243fddba7c1a11de2. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/QZ5AB1980807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe264b54fa77477dd12c18ea5d2aa2fb5ff217b8c2671e4794d784e7312a06661. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:31Z), 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/QZ5AB1980808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6fe2a80bb5820d9a9b6d0f0ef27ecd8a6347061426074bfebd66af535b0558. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZGLS1986365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0073cf22bff4f5b214950923e1fc9569863d8e4658a4e6c86a4118cc91320112. 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/QZNJX2047174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597a6a6b46261f0c2576e592526234decaadf60a42c942e5fdb6214025b308d0. 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/QZMZ92176014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f493bfcb4ce7f24749d611975338daf49d478939724640ba284c7bf0c7c80a2. 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/QZNJX2128411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a29a12f5b458bc9a9fb8b8d0e71e94135254a132245b9f4242aeb0cefe468b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:18Z), 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/QZGLM2207615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dc83742dd87d5825528301a9578df0781df72b2f78a664f46d3817aa7a2275. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNJW2253773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b96dd5a871296a4c92e8c43713f622cd5c765a584b12259b859e42a009be867. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:42Z), 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/QZNJX2268134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161815182a9db1ee492c7621fa8e5b43b3e69c1495602f9149f98aa656a34603. 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/QZTVM2295885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b400470b7a8c34bec77fd301ef2391effdccb830bd1c74d3e22b042f6157923. 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/QZW9K2244265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42003d1a5fa3d593eb0780f36af067c33d3a9706cc12eb429083bd3c34ea25ed. 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/QZW9K2244269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2281659e870654db5bedf135d28c4df2cfca6f1324be94d3cf34274858aaaa. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZW9K2244245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc33aa7a03fd0de5a41fd160f31057b1e98775e2299d6efe6feab429347be278. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZW9M2283146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e8da0c7d9e124d15377617fd8d9df697b91e945eadd9ad66c161156d4c67da. 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/QZMZ92389004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99cd34e1eaea3a2b082c9e4c2b56f1ee4a665499e2b6f7fdb0246e5d8d628d2. 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/QZTPX2301569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c3d448da55f53eb4c48bb78ef2100508f0f6e74fa3d05910e59fae9c83e665. 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/QZTPX2301570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7f07cb3d1b03ae630b82a6b4e4b7fe32634b92f0e2f4a130e5282625218ceb. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:34Z), 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/QZNJZ2347577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5081970b5d598e416928c8979a7688fd9ae91aa027d6195e642c8c6264c6f8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTPX2301571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a34ae0927e50d808d5b90310dab5d4f25dff8e76246728ee979b9a4e71c4af. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTPX2301572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e42c83b77463ecf339ed7cc6b427ff84fbc9936575bc025f77055a209ded9a2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTPX2301573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e99b6c654d242876955a445189ea5f9713695a9e94c636ee5a5526e074abf87. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNJW2321322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1907c641bf4606fd096bc4732daeeec47b98cf11055595df83d93a3de1d5f02. 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/QZ5AB2309725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b6d1e4728db3cc0a6a8b6d89ad33a39dae8e8800806f16cfd44c7145e0bbcb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:57Z), 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/QZTPX2301574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75412facf592cc803ff130c81bdc74582837a6c7a99e12750f2e6a5da020f0c8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:39Z), 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/QZTPX2301575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf655caa1301d72de4d2ca58a2dd761fefd89c882f80295aef5a01c73abf43215. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZMZ92440463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a7ee4870be6cc809a1cc98b64ec3256d67c77834620aef1cd5c4d425de8d92. 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/QZNJV2411393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd52096a71af98b37dcf821d94c825f14371fdc03b79665b5d934c02cc00b28. 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/BX08N2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a501c53eef6294217eddfc0c3d169e4fea8eef750f2cf34d18746e2f69b929a. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BX08N2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85cf4da21b0aaba415bd1bb8aa6c3e653780e5ef45c4c6348bdf12fe056e3bc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BX08N2400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee77938fbf044afc347ddd66ce15d0979b1c69558d59e80626a8887546113682. 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/QZHZ32001089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4a601a561e8aa80f56e5925a3110d8bbab70e078e1d15897825cb91af514cd. 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/BX08N2000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4a601a561e8aa80f56e5925a3110d8bbab70e078e1d15897825cb91af514cd. 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/BX08N2000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587320d9f18fb7e86757ed4af75afa450d7391b8981b0d776567b8af9a6dcae0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXWY82100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee912c3c3f2e244288fb3928e3012a239ec3724651935dcd10546fbe25a285e. 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/QZHZ42074588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07ac26d6bf63ad428c67be4094d86ac006c2c909aaeba8cdb522c7d60ed8f62. 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/BXWY82000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee912c3c3f2e244288fb3928e3012a239ec3724651935dcd10546fbe25a285e. 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/QZHZ42074588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07ac26d6bf63ad428c67be4094d86ac006c2c909aaeba8cdb522c7d60ed8f62. 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/BXWY82000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d856699add8d2d5e22a20be66b70aa135e00ed1b350688930c1edbc848fe833. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ51957398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587320d9f18fb7e86757ed4af75afa450d7391b8981b0d776567b8af9a6dcae0. 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/BXWY82100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376342e20c14161716dff3671c592b665780a19a97c743e226079afbe3cac843. 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/BXKG22101181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe042f8954ebd96beb0911b26910b384f420f30f02d39fc9914c0df0612b648ae. 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/BCRMP2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a1f104490a40ea19d1b4bc305d0580cff705ecec5c97b52f31298c8a4bf4c0. 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/QZNJW2033925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa0bbdc8d5b08c9c61b9309809e56d97b5822b7bf44d9ed5ddf497a498153dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX08N2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95f6ca062878cdafe6082a749c4f94fbbfc0ed9ad8223ee7e7a3782ea661dc9. 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/BX08N2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29a412c2924ee4d6f57f598ce297214f6f622f449967cea203a440e6e23305b. 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/BX08N2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a5ce7a2461fe2dca6a71916cbc7254862824f135fd123487963c8e2cab64bc. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/US7VG2016025.
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 0x54a0a6ed20e0ded0c295450040136c9267ace4c17d7a681eaded1a01f0ed1244. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US7VG2016021.