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 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 0x6ad5565838dc2113b99666bcc51ba5e24e6f64f2fb1175dfb10adb06a41ad1ea. 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/56397391-14e2-4492-b8cf-b8c22d46a0f4.json and https://artists.proofprofile.net/proofs/artist/56397391-14e2-4492-b8cf-b8c22d46a0f4.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 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 0x418d9babac438d6dbd1328f637ad1997f1afb2cee1af1dc91adc4d0905040418. 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/CAHQJ1864459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa80c6b5b1a572d3df211ac5931c62df1f85406a30b86c9e8864373ea7033c. 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/CAHQJ1864457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c60cac7f9d63f109a0adf579b63adae3023c36ea9858a91e0351c8d03eb7a10. 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/CAHQJ1864458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468daa9255298d349fc4b0d97d32999ec047f15ccf3c0b3d84131f56d0d1d661. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/CAHQJ1864493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7dfb3d91b017a6583cdc5a08320aff809e3b5db76b8854fd053ee892154560. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/CAHQJ1864494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c470ce3285ef2a954aee85489e5e66070ec5fae882718a973d201d9bce17a6. 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/CAHQJ1864463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0386b9c20a3be3a5f94e75af0f48ca5c9a20ef53544c4f67f1419e481a57cd4. 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/CAHQJ1864484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad5d300b3dd2aa8a244dd031508b740e9cadcf91e0787adc3bc127c5d2ff7d4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAHQJ1864488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba2fa7d3d4437a5e382fc948dfe01ca4de4a8734f00444d6a8f4a7a048b26d1. 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/CAHQJ1864487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759b168281b60f61601ea916acabcbbce1941410f5899947b6ff01e7bda2b7b7. 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/CAHQJ1864485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff12092cd6dc9205c208b70268c5dedae7154abfbee648201ee68c6cc40a54d. 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/CACWV1989708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5013862149b3820737fdb10f826b74780c49185079d7c5e36a4db4a341003ff5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CACWV1989707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576a3e520967a84ba6139d48d5e1f0264fced341aaa003892a62e8f0be51ec62. 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/CACWV1989717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e710879a82d2045d60c8ea3ac9582de880aba122e3e2005f02d69813af203d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/CACWV1989720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe2894332a34de179e07ec9775ed9067809d60f01c7154460776268b2ba6cb5. 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/CACWV1989709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3be43a55721ed57ae44e83837207fe50bff4f6d6d7d23eeea0720437713e4. 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/CACWV1989739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba91323c0cf8d7e32e993542498ecdb8c308586ea3621b41ee1d341af5b5fdf0. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/CACWV1989718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674994a4b698b221f5c7616d01978fb0d2f07a7cf0fe6bb2930683b5159ef8f1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CACWV1989722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffad087e387c51743988b809976337603309ffc114973ace837bca596d2e1cb. 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/CACWV1989725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc91ff1830de9ac23a134a1517754161592e15f6b2fa30c100963fabfed1da1. 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/CACWV1989793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728b65e0434696f9d1ce1c5a77f77706caea6e485c8a774b50eea20b963b2bb0. 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/CACWV1989721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f317ff3150a08baba7403332ad155b180bcec7083f9133f5cdcfabb39a9c284. 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/CACWV1989804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefcd3ddb03e2cff50b3e8ee952acdf3daf520fb35f2c6fd51b0393451e97bd2. 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/CACWV1989753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db1bce84f05c87d7dd6543957f78aacb919d6db08d7f54aff815fb022e9975. 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/CACWV1989734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1ac3521faa9c600eb7ddba8a3771c99aba52c6250a9ec879e859b5427e82d5. 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/CACWV1846882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e99dcabb1225b37eabebf26fd464e991e9b9167714f59fc49e67551d660cc4. 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/CACWV1846889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a6b9f7c801e0c0fb7171264ede81b804636cac8567064e04da7a7031b2c81. 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/CACWV1846905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8295ce0676f95962bc67959f5d7ece8aacb3dd80b011b1cb414411435f33a9. 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/CACWV1846883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f15b1b857bf9cbe1e76393e9747977a5051b02bc032fe712b3f93478a8f28de. 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/CACWV1846887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ed09a73cfd2bae603646f8efc2a4fb0fde7f8925a7fcc95ce97ab3c1656e6b. 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/CACWV1846894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0913a2f9c58f741945e52b4b6b85f640e94e3bc4aedea1ec657642d54a6824. 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/CACWV1846900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549c48bec320a44778d374171829d4f5493447dcf52aea0db45028bd48e0a34. 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/CACWV1846884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6816d393a38f112b247769b2f8e4d2022fa48ada86f784ed757ab91eac84e3e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CACWV1846895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeffb2f2755d6334c490816ce15e6c33402d1ef142b0a4f1ccdf2ab4603f8a2f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/CACWV1846901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a29c906dd7720354f04fcae33b3a7af084d9fc92f76afc335e7fc14aaf7e29c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CAENV2283146.
Canciones absurdas para mentes retorcidas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbb6fff8c5d96fb6715b74121a4b48bc77d13d7d1371d04a5e76938dcdfd4c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CAGOO1936695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be0aadb3375bc178414e498332245774c43bd4e47900ef8b92ad9a746672f75. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CAGOO1936696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562fb887f461621259e45e8eff672fc0937630989c1bd2230752b3459471d44c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CAGOO1936694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87bc21e92c9da159c14e0f0b93a7dbcaece27e36318b1d893ff070317c405a9. 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/CAGOO1936693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef50a4950e9a66ba4e9a0b24af91082b2c152b5a85cdbb6a76b85103f08ea5bd. 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/CAGOO1936692.