Sarcófago was a Brazilian extreme metal band formed in 1985. They were fronted by Sepultura's original singer, Wagner Lamounier, and Geraldo Minelli. The cover art of the band's debut album, I.N.R.I.
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 0xebacc4a4f85873221ce461eff6bf34a3d7faa322c0a7901efaeae82eb85a0c0e. 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/f59877e2-dc05-405b-9a55-76b221ec0fa3.json and https://artists.proofprofile.net/proofs/artist/f59877e2-dc05-405b-9a55-76b221ec0fa3.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 0x690ce6411f9f8fcde2771b21cb56ae8eb8c1c42c2a1bf54386ecd43c91e8370b. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/BRCOG0500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8854910432394d2da5b676a483ad1e3ead67ae5132ed48bbfac41f7ccd6b887. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:54Z), 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/BRCOG0500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a80ced0ee5657558a2b49dc1dada551278ba7b4c83e2d5cbb7a78a122920e5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRCOG0500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08c9034bf3f39c1c9b15cd4f3d90f5c06ad9f8eab6ff096fc33ba06d33175f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRCOG0500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ce3d451e92692e875d2cd4c709526c5f6cf4dcdeb5a2a32216846a7bdf905. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/BRCOG0500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818b9a8258cc0f1ea76fae1edef868a9ab53dac1621c0dcb59d76ff02b86852. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/BRCOG0500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da8548e13572ca8d3c96000229d3d3fe441d940ebc8f803536bfa36bcf5e318. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/BRCOG0500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ce6411f9f8fcde2771b21cb56ae8eb8c1c42c2a1bf54386ecd43c91e8370b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRCOG0500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34cefc5fa002f95be12a109b947dab401e739b40661af52868ba3c5920011db. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/BRCOG0500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8854910432394d2da5b676a483ad1e3ead67ae5132ed48bbfac41f7ccd6b887. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BRCOG0500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a80ced0ee5657558a2b49dc1dada551278ba7b4c83e2d5cbb7a78a122920e5. 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/BRCOG0500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08c9034bf3f39c1c9b15cd4f3d90f5c06ad9f8eab6ff096fc33ba06d33175f. 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/BRCOG0500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaef4718e8705f144d33eacdf76bfe21f707df60b362365eca9f56de3ff5b1ad. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BRCOG0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50c8bb46e03ad299ae9a8b35402427f5e74faf27f5de06f88818448bbfefe52. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRCOG0600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454a46e591809a7ee6339fa8a3ba0ea0f931c342526b690ccf6c3270df4c028b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRCOG0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aafac35b51b7733e722c392b0f99b5cabe3cd90aeb66c97d01baaf7968765d. 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/BRCOG0600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaef4718e8705f144d33eacdf76bfe21f707df60b362365eca9f56de3ff5b1ad. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/BRCOG0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50c8bb46e03ad299ae9a8b35402427f5e74faf27f5de06f88818448bbfefe52. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BRCOG0600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbde72ca59c590febca43f7c67d2a77a10ef4db4972b084bd6641d3e183b0b3b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/BRCOG0600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454a46e591809a7ee6339fa8a3ba0ea0f931c342526b690ccf6c3270df4c028b. 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/BRCOG0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7204c33d93404fec21f61ab06065df7648f6a51e7bc40a2cc78fe61eabed0154. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/BRCOG0600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cbc4fcaec239fbd7caf124b56df282c71ef788a8adb47e95de12066827da14. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRCOG1100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339c7982cd1f99eb153769068f3b29b0d88d4c6cc56e6567830e08ba1c847295. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BRCOG1100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0af0c469c584e3db60cdcd30fad8082e7a790047c6d430d9e6ca067db5e40. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:33Z), 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/BRCOG1100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a47df242d28ed7a317cc751eece9cbb6658cffd3ccd47d58ff4f78feec8c40. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:52:44Z), 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/BRCOG1100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762d4aa0ceeb66268f8f56f8af31595e92f8e28a6adcb866f9c4187407d1c762. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/BRCOG1100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f26e036d3c54b511d67917d74a80dd96b04e1c8ef8d1987d7fe26177de055. 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/BRCOG0600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ec22a2132da3fb6d52e72f2804c67d14366f1c66a8a18f5a96277d612455bf. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:50Z), 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/BRCOG0600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429bfa50a423e8b2be05aeee4c70fca1c8e34e345eb7ff10aa7b77edd481eeba. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/BRCOG0600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6b0d8ab35aede501ff15e7937281edd3675fa2eedf48f053fcdf2d583f0a4e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRCOG0600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e9470bf0c7fe9f1cb08d0ed19bd24b015e4224411dbd3d8b391645cf8045b6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRCOG0600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7204c33d93404fec21f61ab06065df7648f6a51e7bc40a2cc78fe61eabed0154. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRCOG0600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399de6d5e859ed6687c92cad7bd2156f8da2257ee85d2d7aa847087764bb2c56. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:01Z), 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/BRCOG0600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858eeae2b0ad1bb67316b9f1a76cf914fe6ceda93ccd717b45d6c13ec1280bac. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRCOG0600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c2b2e55aeef5a0eedaedd7891b404bf1b9c657b3bcf31c761b9ce165267c7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRCOG1400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf656ac933a4f7409844ec995b8e723c6b192aa188e87ee533d6dc4a338078bc. 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/BRCOG0600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5969c716771b30342a5159a854605f1c1b51283623f2a0009ec3f95e681e8315. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:21Z), 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/BRCOG0600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1efe3196856761f98215bfab46b3fd6052de07b97f8bb85198407214d05ab06. 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/BRCOG0600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1752f6b14d50cef87b706d78b32c5f1158de324a534991f426a2bcb9c36fbf6d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BRCOG0600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ffdc73eda0718c98b0282ff152ea279eb114bd6a8b8bdaf163a082d830c4da. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BRCOG0600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac1e7041b41582f2e87dc111c00cec65b07658957c4a2b26840cba8d959108. 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/BRCOG0600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa851d0336ffae33506cb9286b5409c264eaf6babc27c88a634520c940a0ed2b1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BRCOG0600071.