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 0x8fac3ff91fc6a1935ac9edf071f50bbd227317e3e15f972be88dfabde959add5. 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/4fb9c08e-6d0e-40b7-8023-3867904cde3f.json and https://artists.proofprofile.net/proofs/artist/4fb9c08e-6d0e-40b7-8023-3867904cde3f.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 0xc3e57584c1b12d0c57a66b9afb5dcc2408c6146de0cc0100753df28b4d181d7e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGR2200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1f9c1a7e46fd974b25113425e443f9c795d5d8e3256bac1fd77e9ca79d7cec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAFO2122583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c501a24f84fedef75778d4d01ca99b91d84603f9e2850db2359cc61375217dd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:11Z), 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/TCAFO2122606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0e538f7b96b0af564aa0b7cefd0725c331df1d90e0816933c53bae0f8dbec. 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/TCAFO2122655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a0efbc916bfbbc85cad35db9a53402fb6359cab67d80636b71f8e890bf5ad0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAFO2122663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8650349f6f451c3de146446a61f273ade8395a0910f05f169b956183a2621ede. 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/QZHZ52080475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654ea76cbc180c4e7af78e990fa5dd636713d37c79e353c883d20128a92dc36e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGE2244306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb96cb0654dde022694d1951cee17d322439ddfac3d8a8dca5fffc166cf16e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAGE2244322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d9052f9e201eb8b4aa13cd765f6365de944498c223d4449d2b2f36f748d381. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAGE2244338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dbb79214344257674746bae2bf13bb34cda3e6d6de6ecca2c2918ee1e040df. 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/TCAGE2244341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0819745e9ee2b3038d527c362010a7c98ee233d1c06acb665e8b6db885f7023d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:41Z), 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/TCAGG2254597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8959833660556d7312bd73d337d485c8c380125d65d4f0d8c206954eebe418. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAGR2299289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867729d3cffb3ca24f91d79b027106bcdacea21275dff801612a15d73316e5a4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAGR2299299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edc24dd8026e7e40ce3c97fc116c3cdcd8fa6a2060eb8fa19c40899b946bdbc. 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/TCAGR2299283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0d7b9a4e8117aae0a2bf0ff2642929fddf57be38c98f5c93f6722073dcb8f3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAGR2299316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d56244db353b948e315b4daebb501580d29037b2073a272ad0216840c56ec1. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCAGR2299347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f694817d00d09499cb0a7d688911470880b61dbd7532533069d1ab816e9d82b. 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/TCAGR2299357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874ae06db2de167e30bc54047a21e0ea4234085db04b7c17d6bdb54eee2f0a5a. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TCAHA2339522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc333873ad988ded902cac50eb2dfbc5d92b858984ad57cacca8bbb04e5da1f17. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAHC2342284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ad142e739e99369d8974e8710c305595e7e74b79c42fad079ef08f0400b91. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAHQ2328415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da9e855a004f65b8283b2330dfa4b9adfaccddf706886b94cc14fedc907e946. 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/TCAHQ2328467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce4d58e14ced08138d03f70269a3f9a0b194546310d64c0153d175449eb09c. 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/TCAHQ2328439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2233bf26c81ac3c2c11a155ff31760e755c1c66a9d50171fb4d9291cd42bc9d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAHQ2349914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d7e8b6ccb2dbe1c541483b4505e974206a7702c0850c55d05705e748be270f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAHQ2349938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb64790e3326e6e274f92b983c444cb6d76a2bc2399c864f8783f3be107e75. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHQ2328830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736059d238c4f6c04f1a53b379d6619fa92f012276a846bc57c285c6b3048037. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIC2447195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a3212fbc1f393e6fbf483913a0a3dc2acdebfc00a93c7b4bbfb88968fe2458. 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/RUAGT2560532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43c0eda0010ce35f641714e0a493fc0655cf58f7dabdc8b03149bb2d3775e50. 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/RUAGT2560533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8280f908d404169f0dc11c6e71994cc587aa1d62c6387b736c7d30cab59a00c4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:30Z), 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/RUAGT2560534.