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 0x50716567419f2f170f72145b10a7271c4f428865117207904c77e9d81c63d14a. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9556f22c-74cd-4a0c-88da-397c0a247e8d.json and https://artists.proofprofile.net/proofs/artist/9556f22c-74cd-4a0c-88da-397c0a247e8d.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 0x21d8750ca2030c2177d4f296f3b404e7f623ac4a17d94bae4dd9822f2427965c. 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/QZTB62482597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f158bb076d04d03bcb1f534821e327d822d37c8acf7c2ab90f6240d3f4304c6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZTB72400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4243e503110018f232163e561881dca98769f6a5d8be8cba702b38f8b97e154c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:25:13Z), 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/QZTB62482592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beb3b88531d09153432c3804efec1f22c48e02a0d0755cfc838d16222fe64fb. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:18:28Z), 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/QZTB72432635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6494b2c8d7062a329101fe8d7d168defdeb7ca7220935a5acee81e479f50270a. 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/QZTB72432636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3cf3624cdd4e276d5dcecd0d6f89d79f4eb097a4dcab1c68d93b8bfce91926. 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/QZTB72432637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee89943b2dbbfb91d6cbd63038a1f24505ec05e90c3b7604cc26a916dfe94a2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZTB72432638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9212ebc0355bfd75400dd0a3243ce65e83345b043402b49fc1b8d98beb2d4bb. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:48:57Z), 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/QZTB72478057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3fa6b42d6c8ecde351d543664b44c30de2653a1cfd2c88f2096af87bd0f742. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZTB72479142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b00c4db94f1ff643674bfe686d1fe84f2038a174e9efc50ffd944a34d0edda. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:44Z), 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/QZTBA2402183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc651b6e05723793e695e1a23edc2ad53fbe1bd8e92184c8029f2a0e4065c8b59. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:44Z), 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/QZTBA2402184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477fc693c500b9cd6dbc7391d115be602bc8c3d82ceffe57ab3c276edbae02e2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTBA2402185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a2d37019615fc29de67eb356a7384e03deba5832cf60e4c6eca25368a2bfe. 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/QZTBA2402186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7530cd6eae458b0001d6856e10ba1c9b6d30d5bf3877ca25315097c0ef7cffde. 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/QZTBA2402187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c39baff1e8524cd294abec23477dd8a57c70164d3a1dda1eaa3ff87ea46258. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:56Z), 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/QZTBA2402188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b0fd860491d19aac4c9cb62f26f4588bf77337e45b2d5344a40525880771a9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZZ7P2450016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4ee09d97bd4bc8fdd53decfb52f57c75fbec0a5f1bf046316efda2e8cb0148. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7P2450017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1ffba57b2891dbb02d18c58a73a3d6e62185963a6f2b7e6cd8818139c3e0ae. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZZ7P2450018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1df90df1d0db9316ebed3098ac0b636e3f8b5ce0c75fd9859fa57141bfcdacb. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:23:09Z), 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/QZZ7P2450019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141845f0f77551b30df48d7ce3d2068d3d9d2054eab5d31af8e22a2980d0ced1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:32Z), 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/QZZ7P2450021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07b2d2f07ce39fc4a367eeb2b66193be675846a19d7e31459d784d757a367c3. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:45Z), 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/QZZ7P2450022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb62e0bd5c4668534bd99c0059427a10a6970cd3b7e70fe63f53f3245895754d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:42:19Z), 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/QZZ7P2450023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01941a8e761dcbb1e120de60a50ac92e0a1a8e95f5067482f386e9717c249a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZZ7P2450024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874bbd838a53c4b4235afe6331baabe97d70bbf2665064d2bbcec8afe72f8760. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZZ7P2450025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a987641df127d41d37cf8e880664c6f62d73004d18ac469fcfc3af800c4c6. 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/QZZ7P2450026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967609f94efa612c4e62d373d4a637759366718a6c0600584fd59abc75b34229. 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/QZZ7P2450027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d810dc831de88e7a1e3dc6d2739ff009ea2681403ec8b6b47a675eb18e1fd8. 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/QZZ7P2450028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b25ea21418bd8bdf711868f83ee5481e9bb2e5e7ffc9fe822c28fd97824459. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:37:37Z), 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/QZZ7P2450029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65668b338bf8d969e0778e8c555fe3605a2c603769b7072e4563a38641f6b7bd. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZZ7P2450030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb772c65967376d6120b9348cee4ad9b3d64c16bed2c963fa6effcfa0af5783d6. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:24:07Z), 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/QZZ7P2450031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc3100d6c213b652ba9025b1127658aa8a281b686e93dc69bee139aecb00312. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7P2450032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7b1c257917d8b61e7aa9a4bb2c4a0fde6d9c93d069afd7d3e0ef35aa2fca68. 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/QZZ7R2453058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30710e7e248549c193dcc4fa376e3ac23d2588ab52726c25a0e49f732ec2ecf6. 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/QZZ7R2453077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19869553b078f25e525ac36be2a4e655eed6dace4968defc011d99ec2720707e. 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/QZZ7R2450602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f851945e82d8b8d0af821789f7c5c1bf4bbf2f5562f192abdc2c0ac10a98d50. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZZ7R2453021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a572df473ceb362cd34aeec6ec1408d5c2695d90e9e70ca924d7c391f354c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZZ7R2450620.