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 0x9d804f9f7bfa7b52db0cdebdf60a4b69619cd5506a927e6f75a8f2eb6d236387. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63175bb3-68ee-47d5-8393-0e3c3b2988a9.json and https://artists.proofprofile.net/proofs/artist/63175bb3-68ee-47d5-8393-0e3c3b2988a9.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 0xad7b36a900cfba28b59652b8cab4dd119b52cffd9e7e638904283507f6e41036. 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/FR6V82188908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0967cdfb6cc7a5d230e76f71a9bac4e33df02d9f659bcebb632d616b4c764d7c. 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/FR6V82188911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9707e173b06f422aabb015d6e89cc8d03537153606e12625e832bee0cbb938. 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/FR6V82188912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cc4e0e55a205011da6f447ed6746c4c4d38385938859923d4038728baab2eb. 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/FR6V82188913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f361fdb717e10daa19b21166f9aeb200ce1e49b2a1d6928fa9ff1fc1683b86. 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/FR6V82188914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e2654bc25aba5eb02d7dff3ec9f10867d45c9c77f019071520dc06685faab8. 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/FR6V82188916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362c6fac7cf4c74120d9d99268e542d35afc5a345a0d2058873de44648c54a0e. 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/FR6V82188917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0fe3b43992f28d5ddc26be35bfa5ec05e567732800f35efe30f68fe4d9cd4c. 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/FR6V82188918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a78624e4a5694079e7aaf300b42131a54264f60f0a23f6431cfbf6cff90f5d2. 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/FR6V82188909.
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 0xe69fa68daad0f64a0079ba91ffafe50c7b821dd28b098e1c716b6af110a3498a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR6V82188910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90218307e3ae2ae4f012d390d388b61b8057b6b913cc34b5acffcc604c6cdee. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR6V82188915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c7161e88942d1cc46d041b201227398865927d3cc2655f373da187c75415d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FR6V82188919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefad8515507ee42d256c5e5c54dd7c89fa33f8401a0b81709ec3b278a32ac39c. 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/FR6V82134435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c39b756a69e4540212829189e1f9cb6edb519fb45457a03bf3bbafd2807a2. 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/FR6V82134438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890e9ac43e617793522b3bf53a17b60ed193f61dcbef3e7017cb23fc837d33d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V82134440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa388b11fc9002af43db5ab24e51657fd1636e6811824f244092bb796d21a068. 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/FR6V82134441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1a6c9e72a78982a1639e62aa1d05bc3dd146bdcd285916bc3c98f6e6c54678. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR6V82134439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c30feaa792bc8adf4f2196c855a79366959d3fd236f89a6845c46c61bdf0e3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR6V82134443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb91078ecbcc17e44ae532da9ea6c6734d2bf538ff2f2393a2cdf581f85167c. 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/FR6V82134445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f7357614d318992256131e11beba5d267636fa475b4925e81989c1e7ae3314. 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/FR6V82134454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76ef61db352c4ead4f5af57f6d57612c6edd80a47e654a0357c47179c85fbaf. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FR6V82134446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64542aa05a4874dd8ce865ac20114fab228ea115982804df54cdab90f2ab556. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR6V82134448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150741b6ec9732c789c0f32a5b87403adf61a4bdd74cb0be042f5a4038a82acb. 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/FR6V82134450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e7a5a0eb3ed32236c7a184ab6215918ea875d766d0cb6a30c86fde46a71185. 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/FR6V82134452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfcaa862911f2fef1b6f8cec9607c72e0c5484d9f08dbb1bcd0f1c214443ece. 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/FR6V82134453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc8c3b13bde7ff9ed3dc6f6004ebae6e8f49bc3e7971ab8f7e8382362f7765. 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/FR6V82134222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3806039b0b2b8ea37ea0063524141c859847f154e4521af1ec546d99d17bab00. 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/FR6V82134223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfbbf4170b7f566a0eb37416ef069a22645cf1b7456a7816516f602e1cc0b64. 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/FR6V82134224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4174fd1649921bc7688566da92c1938f16667bf305c7fd6b873f74983d93fca6. 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/FR6V82134228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd41f480ae69435be6eaaec387a5e8eda0e0f7c34ef14db6bb986597a722719. 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/FR6V82134229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7406fe2a783c84628ea6b96558e4001a7c8fc5ee240a2300ec5d4536ada7a785. 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/FR6V82134231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5910e8da1495abe922e9abca9c3abc6f959e7e5b2b2a020398e69048f7e8973. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:35:56Z), 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/FR6V82134227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1091e8710d8b498e4f050adc153db2cd015d17b6ffb7f42c842a65bc0ec57fc. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FR6V82134225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c05585ef737581ce2482169ecca47af879e175f0011e4d92ff975607a0016cb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR6V82134226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8541273372ed8d68d4c98ebdb9f8fe7be334d21a5c81767f42c31248fad26e9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR6V82134230.
Asian Metal Collections - The Gathering 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8174c0d549575284169ac3f6f44b45efb9e825010aaa98ca9e0ab8c618443c90. 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/USA370674938.