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 0x10f4322c42e5bdacd08f9ec97ec7678270d5e1bc4d86d76110fe2ee0348eb138. 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/86871a55-5bad-467f-9ffa-bc77fb9092ad.json and https://artists.proofprofile.net/proofs/artist/86871a55-5bad-467f-9ffa-bc77fb9092ad.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 0x51e7e3a90acc474a3f2c7b7c2fb4073826f96f0e615837605aab510a98974e91. 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/INS671500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a5d00f3d1a97a1451f8d62c2777f4e8d084f4288ce4cce03dcf985b5f1b58d. 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/INS671500533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8500af409caa02c653a604e8e57d56cf834c9a5df601689cb962a95e34ff413. 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/INS671500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaefde3b31403f732d6bbd3a6c567f039129ce7bf35b64269b0e61f5493b5fb. 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/INS671500571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433bc433f5330d0339f2cef7e93e3339bf91564149a57c47a5744c1e234a82aa. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/INS671500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcbeeed254886636b87fc245d294c92e32083a614959c2e77f657b7bbba3c03. 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/INS671500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545dd0026becef4f76e2dc60e9cc85598f9389a61b051aaeaccd46c442f99b00. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INS671500740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae035e471256f8468b76c25c3e161a1bd24e548ecb0d9b21c118c2cabd1720c4. 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/INS671500741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02cd4ca1611c26cfe5810973a8d0977297849737afb5bf768d13c8e016a6968. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/INS671500521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dcc16fc34c424d1289a403db5c58661dd0428735fa9b5dd628256f31b9afc1. 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/INS671500522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2166682d9a4f0b6e406808a8c07647271916b45f57e46ae51998fa57c42214. 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/INS671500524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb0264f046cecb1b2ece9555452346de8b448b4f1156ef998bea37717ee1aec. 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/INS671500525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ba75a5943d365177beb607ccbab1fc62d8b287f94eb69c191d895fe05d2766. 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/INS671500526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a3762a5e1e57bde3ae9bd0612518f562c79d277791101ab67b5a70fd519ef. 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/INS671500528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c8fdc911b4b4abc67ae1cddd798313b71f85173b2f902fdb10fe54069e25c3. 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/INS671500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c34cef69b883bca3088d82a4944298bcd301588b2473d2eb81afeff3f154168. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INS671500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fba7bcb4a0517128c5ad6e94e5e61d7c737f733ffeacc3adf40b04b6c71984. 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/INS671500531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf4e90c6259dbb6bdf1407b1ea109299f2d7d9db3fcf415558cf82e133a429b. 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/INS671500532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fdd4bb01bd7c396b76484c06cd87bde0672edd9a4898e199596b1e897b3764. 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/INS671500535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e7e3a90acc474a3f2c7b7c2fb4073826f96f0e615837605aab510a98974e91. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INS671500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f22de383b3794b3eee42af71446ac3b350b1d689e44d58861d6e73ebb23deb. 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/INS671500537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2746bd87997147b1b3dad29707e089b5fd9f43f0bffeb9987017923f3122d74. 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/INS671500562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e0535eef2b3a34dbb6cbf13122e54e7c8cc0871b8e4a15b09598efe573f879. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/INS671500513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0876e228fb11aec8808198537ca88f456ff6a053d86fc6b1ca9886ffc911ea. 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/INS671500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746b2c7ca427a631ee426934301d04b709ece9a1d34bdb5a36eae45a661d8c93. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/INS671500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe227e16659b984dc24202a98a50aa21ba1daa9c5f3528a61eb52e333438fb168. 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/INS671500516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c0641667e50479a8ed1c6733e66602f4b30df793aea7dc91509de9a3cb8f6. 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/INS671500517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064074bcc41913f6b89b5f00a4280603598d8995d6065cf60f7e4f754d40db4. 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/INS671500518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead0dc2358b89284995cf62bb1bce6e63e4053c666c338f2dcde3b95931793ca. 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/INS671500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ac8bfd72a90966a00b166ffa9baeb225b892b651cadc29e6c273ee9468ef30. 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/INS671500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf048610d56e1a9e3a5f636aa094a268979db927402ffb30c3ddb884141974d0. 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/INN241701782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071cc8233426f216703671c16fb72cd6e42eb2c156b21c6ac4555f1942f81331. 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/INN241701773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184672e7b7f0a28bbc7d3b7ae4cf3afdacde29487b47f817ecd2e649d1fd408d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/INN241701763.
Shrinathji Adhik Maas, Pt. 1 (Mithe Ras Se Bharyo Re)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bdbc5b5848d063d5ad66f29ea5409bb90417495868f6dc9275b009fcaa507a. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/INV111200614.
Shrinathji Adhik Maas, Pt. 2 (Tan Man Dhan Shrinathji)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e1f8a7db5b835e1c41913fa222a743b3cc152634a58965cbfbc14654c9504. 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/INV111200627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662390080149140d97ff7f4d29bd8ad187b49f1de158d8ee5464966d9f25c7ab. 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/INN241701770.
Shrinathji Adhik Maas, Pt. 4 (Shrinathji Na Naam Ni Loot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9acea9762e81ed03e44391c62cee2a28735168e06105eb1ebb9d3273bcf7bf. 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/INV111901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa851a24644f2b89935e2281f5a255765289efd496479caab3bcff900c3d8fda8. 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/INS671501186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66e7a65ee74b0feb1e42912af16c6a17cd5d102f10814445f0658ed11156466. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/INV111200633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f6e3b728cd25abf6f608517bfa16d1a1ac002daf42dbbfcd9b7c65ff77544. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/INN241701777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38de138da361aba61895c2e8b5288d7b48844cd55298a42164685c37a11b8af2. 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/INN241701784.