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 0x79b74a55a15641da7d9c3e1e4fd121860ac4783fae456c797370d4a569545474. 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/939fc3df-43ca-4258-bc39-2c07d9626b3c.json and https://artists.proofprofile.net/proofs/artist/939fc3df-43ca-4258-bc39-2c07d9626b3c.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 0x6449b4125247d823b2072c21fe0446ddcfd60f3b882e05d1e330228215dd797e. 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/QZNJZ2493397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f4963699a8709e1dcfb00ca66375ac65fdc800b5375eddd3fd8e33a13f33d5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:21Z), 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/QZNJZ2496029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a60b9d9b4d1cbd3615a9b2456baf1ab0b60c359a2a8cfe8d6b1adac1cbb2892. 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/QZNJZ2496037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3672d9f1bbd109d3a59c6f73844103bc558b67e009c7643c9b3ca2394bcb703a. 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/QZNJZ2496849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e73a84861457365a9c80b9f8a90edbf982c273a3a6d4843098026678621c8e. 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/QZNJZ2496853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e93f7050ab6595429961d3c20d885d381a70c11fa6c510ee1beac97e496401. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:06Z), 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/QZTPX2407814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31014d4b31cb7050d7af4153ce26a5ad4aa9de2be059455651f3f17ccbac6a7. 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/QZTPX2407816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8924d4ba480180debe8afaf0083d866329112a7afec9ce475a480eb2ec1648. 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/QZTPX2474456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779bb20a9cdda055a4eee90a19cb20098ac65b2b7f1dcaf4f31cbeb610007aa5. 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/QZTPX2472016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8080de66f7ed8bee2d2e863bb044ea412eaa5db73bfbddebe88248a7d915a932. 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/QZTPX2474443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b57e6f0f4bb6c1e2a9e7dc4c3a356df5a643077f69870cc3b29c79b4b250008. 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/QZTPX2471509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71371ff87a650982b3e29fe238162a84cb9376c29a86c8dd81bb9b85f8f942b5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:59:29Z), 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/QZTPX2474395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecbc02b0b9f012d502de22fc4c77eea697f47f3d629157516b62b71af7f9f05. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:23Z), 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/QZTPX2474215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf992db8ec457d62bbe734aca5dbc0ce8e18995f8e95846034ac8c89a0bd558. 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/QZTPX2474384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8ed3dd4047fa321911ff672afbc122d4c1a9a285b014e41e47e0df996de3aa. 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/QZTPX2474448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8004cd30c1c6d9a6ecb13340dbb3c37c288e3b130e0b30f8a7a769dc34c3a3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:59Z), 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/QZTPX2471931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc25ce3a2f772b4f0c02285188692b71fe72ec15f7d62959781aae1c809708. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:34Z), 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/QZTPX2471507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581dc1ebdfad874d9c072c81a2c39acbd6c60836c210703faab36709586c5ec3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:29Z), 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/QZTPX2474270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a33e7d51b0768f763f13f1370f20b007738c5c4de09e4ef82ba31957f7505a2. 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/QZTPX2474454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e180a8a92cb960b08c4bd674df2a0ab03bcbc15b158cb69f6e97c06778f176b. 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/QZTPX2472011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f826ae2fe33a6a54950701b5eaa1c3b11d4975fc2b43c00fc6f22aae34cf3e0. 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/QZTPX2472010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467b9722d71dcdc69c95f920cff0cddd392206c9c1db6d77f3965fc100bab27. 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/QZTPX2476229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751b2e0414885cafdcf33147ac13308ca5d430930e1a47620d7f03e1e50b867b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTPX2474419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48449f55d370f8c44f7d45ec3b4e6a3ba0b1266594c32d79ac9b177fd547067. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZTPX2474678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74843a483efadb48ff38cee3f279f878aabfb1359a3997e97d58f15da914e922. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZTPX2474224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7114e427f5034a10857d4db30f6bf4b2c30ef239beeb68c620283300b9a46e6b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:04Z), 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/QZTPX2474681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae090d41c6ba1ded7eb7f32dc6c5b5453f72828766724ac7dbd6263d1e5aa92. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:54Z), 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/QZTPX2474684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad39f9bfb763d2161b993d6cfd604c42daa4457e92acfb3b257437edae1d5ed. 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/QZTPX2471925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b56f59628ad8756d963787d4b6afa0fd1b0fbc4131f9f4e950305b66d92df0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:22Z), 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/QZTPX2474233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeced733aef175c8f24695fe60d43fac044a4da4456594547c5c20507babaf28c. 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/QZTPX2474231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3f859e4c4419446472308cff5dc04534aac7481a4b205b479d1764352a601. 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/QZTPX2474447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbfb92eea2b049f7b354c02ac4fc1d301b5e0d5bc7721a348457ae0596e47b7. 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/QZTPX2472031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa6f00708192356493dd192128e8bdfeb1d691c20a35f0eabe2085954afe671. 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/QZTPX2474211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f556e5907b6eb2f750f8c5e58e27b697839af1ea909fa4a058120c0009c6c8f. 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/QZTPX2471533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb709255090e733a036bb42bc81ec1daa1281d5b80a6b9cc149a1e77dacb21. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2474413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48121157ef0ffed33d1dc7f7a4723e76a902a221429f3c784be7083c4c2ecc3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTPX2474685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6444af55ffd37f52f98c7a05bb3f07af4b9359c7f7e5c95631ced3cd77e3e363. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTPX2472015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5698ac4fc789853777d217ebb4bf2904374d36c09892235eef07c5ca40925f3a. 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/QZTPX2472012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eb2dbc99bba0d9bd794e285fb1e098b713409656fab71cb3dbb3fc45c53993. 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/QZTVM2410163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ae83b7fe0eeb56eb9432b1481680b65b191b57185c25282419203e025b6502. 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/QZW9K2424926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c77421dca1336f86637fe5fd5fcb55c4d329fd4895bb3bb85399e44975f4e7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZGLM2538842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc594e480738a60f252e45fc3fcbcdd410a5dcdb89072130ab22df68f9ec238c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:55Z), 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/QZMZ92502115.