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 0xcabd6b546f51c27527fe0c0fff623d48b59cd54643199b7f6c99921081946a06. 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/36e16001-34c5-44b6-a716-80d209825f32.json and https://artists.proofprofile.net/proofs/artist/36e16001-34c5-44b6-a716-80d209825f32.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 0xfbc03ccd24997cbd95b9814cd40aa10ba16f4717e351dbed24fbe7b7e358ec3d. 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/QZMHL2027330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c11dc1f6d6fd96228e10f2fc2550f7ef7691d3c3fd3152cbabd3f9f19fff57. 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/QZMHK2059796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7539ce498e8ac6b58fb05a822992b07663e0c2fd3e254fcf8c771ba32e345. 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/QZMHK2092407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7bee130a12606ebe1c0320789a5c5f0c06573daba900a248e2e06c35fa30c. 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/TLREW2222234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345acd87ba0df4e9dcd8de1fb94ebc203a754b9d8c4bd0cdeeda3e73e7c3ce58. 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/TLREW2222235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3dea86ae2c2355689c14dc82db139d7b497d4d03fca0078bda21aab4724371. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TLREW2222216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bebbad104052b704ee08c42a1c08a623b3e3400b5e04a3282349a31a8358c6. 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/TLREW2222220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dae222206ed08b71cd8f400fb16e17aa60634b33da44dab3419458220e58752. 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/QZVEM2321232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eda59dcf28dd4f3b2d7cf191e80e0613f2261cb8f7ed4b4de7b5cb6bbf6a07. 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/QM4TW2312304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc718226214454facca038aafde33574e97aa1c3ccc040f7364425b5fe7083c6e. 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/TLREW2230224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dffda4457fb41a5c859370027d6b3de34f60cd786465b67a8523dcc35f4a4da. 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/QMDA72258814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6331624fe06faf3eade4c8f204470391995ecdf38fc6b987af285600a50561. 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/QM4TW2285588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695230a5ddca7d4567cabe0dd45bb6704ab99eb06c02d90b7ed94980c2d8c200. 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/QZPEW2228811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fdcb39ef10d0f92a5304bc8e893f04f26d22c78c0eb724d354a7ceb793b3e5. 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/QZPEW2131507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edf2f9762cf81b5a076bd0d2e7362ea27ab9fb0cf939be4b4f191850f92d51b. 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/QZS672186722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceebf3a0835998793cfc31b9d76501b62e2444a0650255e7f5c5ba8640f3b09. 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/QMFMF2103431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f9405204f682bf2b83de59110c1467c7c1d7dbafe40d359fd82fb27948c24. 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/QMFMF2103338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc899523d0f0d4f83adb2fbb34a36f17be5feab706ffb4d60eccd23ba1fcd392d. 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/QM4TX2148516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f4b78d6c9d5cbf52b0aa1d6348787d06f46c244eca27d10871711655bed69. 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/QM4TX2148517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579d98c898763c1812117abfa751ecda55151a6d6ad7719094c7f0cf8058257. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2148519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233fdbaba590e8f6ca36e781c4042ebfb1a9004872e13c561f39490fbf81860. 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/QM4TX2148520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233fdbaba590e8f6ca36e781c4042ebfb1a9004872e13c561f39490fbf81860. 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/QM4TX2148520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc899523d0f0d4f83adb2fbb34a36f17be5feab706ffb4d60eccd23ba1fcd392d. 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/QM4TX2148516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cf36cf997317381a88bad0a97d8eee675eb9b2b5954ceca2e09d99bf39b4b4. 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/QM42K2184296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb6943002cd6e7c53be1babee8b3dfb66ec23068c314d0467fc2f4cd53e27a. 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/QZMHL2029807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f39ad2addbe3b92f6d0556dcfdc20e98d9111455d8865170001664d10a7a3. 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/QMBZ92062309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a14963dcdb7c5b74904d61dfd8cb0a37581bf13fed2d1183fbed978f85aa88b. 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/QMBZ92062310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b4e9691cc33291ccc932e741f35c271a6675fca6ef31d0e288bfe474e26abb. 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/QMDA62446861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad42bae2bcc2a773c93b591396aaa964da0985f080c3ba97a63fb8af0bf82b6b. 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/QMDA62446862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d37883020710941330d4c6fa1a090f2ae88753b37c1bd34a0db17bb852030a1. 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/QMDA62446864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcee0c8564d482b7accf647906e65d6b63976b99d88a6fcd823120ad007596f. 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/QZWFT2461198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601f2f841807e5be66610dc310d43cf517806c182efbd5ac725a5c9ede7f9078. 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/QZTAY2394916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad832bbb05dc633907a8c2552936e4c690503f5f8cfbd2c43162623b90c5c6. 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/USUYG1196386.