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 0x44a3693ff81185d11569034b0b09e6f728f8dc53719f3a9f977365418eb6dd13. 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/7b8169c0-82a8-49cf-a8de-a6370b1a517f.json and https://artists.proofprofile.net/proofs/artist/7b8169c0-82a8-49cf-a8de-a6370b1a517f.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 0x8b832c30db94e4ed409b8044d91f7f880fb6db8952d9e9cfcc4b5ba655fd8f5c. 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/USDHM1531899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda415fa013fa5c829d49aa71a2362aae54a127af0fb988014ef09a1c3789945f. 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/USDHM1531900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91108371e5677c351059a07723ae8bec29827462228d3bfd9b96e7c050ea1394. 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/USDHM1531901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cde82583413c4ccd7f7d5b059bd214d69be840f54a4996f288e817fa5488e71. 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/USDHM1531902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf53251684d781a360e6b8a36fce77f15c4f3e22bde80adcad91d12942295392. 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/USDHM1531903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a3f018315bb41bd2f7b81cd268eb21853730e10a6fcd701f895da819d9bfa. 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/USDHM1531904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfa398eeddd19303c60b20aadf5df7ea7bb3a57ada47bcb79e6f77bc6b3c1d0. 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/USDHM1531905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eee311dad721e0d7eb987852810963ecfe62eae9fbf1ab33094359e5d04030. 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/USDHM1531906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36356ad48ef696bdc5059340e0f48cd7b36e21114b1c464c7e1f2bfeb4aa554c. 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/USDHM1531907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddea068b805cdc336158c9e849c45a2307cb116c57fbfa9212647ddff1c932f. 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/USDHM1531908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e089005fff1eed7910539ed9ecee9807a83b603794f08099ed96f687e489de2. 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/USDHM1531909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f54b6950f2065a7f7833e2d2e7c9da885d029f120ced6b44cb760abbbb859b. 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/USDHM1531910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a6f478847707dfdbb4fae70918bc47a312a84f8f5e7e76a66c50dfba4b1e12. 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/USDHM1531911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443c9e27f254bddda3f72ac220fb3b66fac33bb5dbc610ad9cb82f4304015d96. 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/USDHM1531912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c60a117383f41d0efaf1b3d694830d541bcc4b1811322ad290dd2232610718. 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/USDHM1531913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17647e00eebf86378a039d01c34b07071e77d36aaad3a0dd84e9b964aa02dea. 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/USDHM1531914.
Such a Friendly Town (feat. ThunderScott)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70957c674306aa8c984594caf6e6f30129900da172d0fb0752a233cafb300629. 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/USDHM1531915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b0ca3216c2b9eaf52f50a9f0d4139c1d350c70e5c57077ca1fe23bf8dfc6a7. 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/USDHM1531916.
Have You Ever Heard of a Talking Flower?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad4d3b57c49c328c9726fd1d2fbea609dc1dc1d477e90a8dac89750a8a299b3. 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/USDHM1531917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6cbad56ec609702d1d0afec8b57efeb25eba70faea2d413f0bc13fa6a8e7b0. 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/USDHM1531918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bed72688c338818671abfa5ad1c24fabf1a6ad9cba3b5c1acd7b953242fbaa. 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/USDHM1531919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a15e6d5ab0009c4341e9d2d5839c138affd2d410b14349de715088ee189662. 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/USDHM1531920.
A New Home (feat. TeraCMusic & Eruption)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd571b388164e3c49b4e309230e51340a8f5daefb0243893ca32d15bfd1687f. 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/USDHM1531921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746d184b2f0d7ec602adbce705a6af2105a33d674afc6c67ab40d5a2a159c247. 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/USDHM1531922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21d254f16197fdc5e69bcc1c5e2e6e1c990183efb034422879e0094fd36f6cd. 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/USDHM1624814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd9a2b9d45a38a7b720fa2e194888013590a1da61c701a6256f722ed64b2a2. 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/USDHM1624815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89041629240f4aaaa4dce83c1af7ecb4e7fa64a251b460d54ae90ab395dc2d75. 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/USDHM1624816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38501a9cc8528428adf887729fb8f4280a2c5de68ee52f748e9cf0d83d1c71ef. 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/USDHM1624817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f14adae853a7e925d2231337f1e3a9ecfbd7e76fe62576b16436b32238e02f0. 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/USDHM1624818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3829f6b77471ebbffaa0e27a79cff8832111b4a052b6704cbacf64c2e991d0. 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/USDHM1624819.
A Quick One Before the Eternal Worm Devours the Underground
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db14121a2fc69bd90581f342183344d4c269ee33f4d324fd8fe2cbbd34da05a. 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/USDHM1624820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe556b2dce1bc40a11bc52b1f0bc2b0f0721df771775ffd893b0b07628dac6071. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USDHM1624821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeef641a9bad7203896d4d02f0c8b59d28f9ef6e6433de9ef613ed6d224e0669. 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/USDHM1624822.
That Thou Art Mindful of Him (feat. ToxicxEternity & RocktheJake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6faa8a8f754b27eb4d5818cb6784d710adcf48fcf20f9f9aede2ae405802c1. 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/USDHM1624823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f50da9eb49379cb55f34ce8d07d0539eba5a4874f0def52e8670df3b9c9425. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USDHM1624824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd978b576b32055a1f2de2809ace4d822ead7e3ad6b258a381fe33bf5f910e0b. 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/USDHM1624825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771daecffb0325f2addf88bfc8ed40f15a87c3af49bff5b09830177f66bb823c. 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/QM2PV1775833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d95fde8785f8f4ce4c98ebb932032f1456c9a1f8e0f3261fc639704e1be1f3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZBRF1861723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142461bc094b703070ac33004ef5f7d047d565b7d982980b8e38a8e8336ecc0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZBRF1861724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a1aea919f9cf71c05b78f10964aed49213178c4180eb01849c6bd75d7f0f94. 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/QZBRF1861725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683b8bd1ac2b12c0eaa870dbe10071daf00eaf6b64dbc34c86b4c6b4e94fce39. 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/QZBRF1861731.