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 0xcbcd7692f13891c42d51182c135e3ba8fb43152a48a3b35856e01100cf5f7ce3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa52307a-f2d6-4d4e-8f91-4dcf315becfc.json and https://artists.proofprofile.net/proofs/artist/fa52307a-f2d6-4d4e-8f91-4dcf315becfc.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 0x58a33915e8f1ee4ae15dcc22279472eb19ed6371ce049755e00c84fef20d25c4. 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/QZNWX2464642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f156007a481ff4f8c3355486af85b95c67298031edf939a4a86c7af47ddad54. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTAY2438967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda856783302f3ececfb2ffb203e67e0a9ab2a92c44c7ddf64c3cf44dd297ac93. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:28Z), 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/QZTAY2438972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b3e8e824febd6d76e536811a96e062446242d31a8c6129e414a1b5b0957160. 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/QZTAY2438973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d35b5d8ae8194fe17887c6004ab186abf3e290ddfc5a4ddcd24bdd542a4f55. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ762425764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fdc21e0fa79e2568dab5a2f5345c6a0f9c573be1eeab98e79fd275520d9f05. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ762425766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac5982dd983cc33c7c8c8fd83c2efc082dcb40b5c053fb3b9e62c1caaa39484. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ762425769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c440e7389e2aab0b763e3d2eea8653b67740f8fec3b770ba78923bacdd7950. 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/QZZ762425770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ca5fc4f5ffd3951e2e7fa5d87cfb655538592545aac4b9c7696fd443c78011. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZFYZ2514352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2414a81f53c3d12a998e7fc6d953e38ca6b8e90bed9a3a6d6c2bf33723254d54. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES62592099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf003db62ac7bf155ec28a75f523f7cb15e5098efe10547c8391ea41039438e2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZES62592100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bd08bca297ea66d0336c702e60de5defb7d447f43feca2a928e68a016b196e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES62592103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af1604dcf8e5d1d7fab11d09f7ce6727edf344767d0cc19231a6ea47751c64d. 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/QZES62592105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e3514dc27f590b25cf2535b34f53a67972d078e91bf3db872a6546f47a9901. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:57Z), 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/QZHN32586140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2bdee883000904787f431203eadb045cf377f82a04af09fff989c5951e7c8a. 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/QZHN72526828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e8d05ebb3a867179090a5711d9ee8fa2208b91d6fc1fe4dca63f2665167452. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:44:57Z), 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/QZHNC2518882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85c731c012e7ac9c400b93dfbd786c6de6c6a26bae6961a790c42c3f3ad44c8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6P2505950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e5ecc34d6bde9c6573b2dccab7b7d9a1e84f17b5222ca09e5a18f03fbe45a0. 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/QZK6P2505951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be8accdf9c7b56756552329a04b3b359ec97f123b83e159d482cca78b9623d9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZK6P2505953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a603241d85cb349212a6c8f0bb6873336ef0eb3d69bcbc54707e4109deb95a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:29:29Z), 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/QZK6P2505957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7232e9d506f26fc6ea9762d3f2a6ec82b6967d2ca23fb7929c68cae3d5d1c16a. 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/QZK6H2578909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a35b1249acb58a0e4d228bce8f3234256c8d6892e288eca3417e610dbeb867f. 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/QZNWS2541813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e5344967624a7130b0151c3c1aba89af9ebdca41c9ab687693f7aec350090b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZPLR2518687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220a9bdf4870a53b3c0916c9f74608b6c2ce37dbf0caa17d369a8f2e98dbe5e9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZRP52516777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6259bed845d60c14012916d761b85024f2d1d6e2ce2fa1704635a37666c5106. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:15Z), 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/QZRP52516778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241ebb710b53940a0a7e9de445cd15ea0fc28221b872c90d2c183bc6fd8c1e05. 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/QZRP52516779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9571b97bc6240e2e1d91b900d2c29d6577038d2f953275602787a1122cd21b91. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZRP52516780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c3d30e212d114cc687bdba63ebc2f67c4f8edfe086daeacf63d5309baa3189. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZRP52516781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d39355f0abc07f87a520ba4e4905b2547842402deaf547c447494d089e9f19. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZRP52516782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4bebd9cdb4edabee6e15469802e3a3b7dbc1258350a55f8338ec12d63e9e2d. 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/QZTB42580927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d1580ff4e2b86142970995b4a811197a256bd3ecedd2b309eb2a3422356b70. 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/QZTB62589804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dde6cf1d63105000fa170e5cec922c375f2b2cba9e4e69530570f290b135f51. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:59:11Z), 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/QZTB62589805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b46783d3afb780aedf09fd817ec2567d3ffb9d61d81b7c4b881f5b5107225. 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/QZTB62589806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd86485ff5bf32f74f0b7a9dcdaa93172e9c1268fc7b5f29d53bd360bbc11693. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:14Z), 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/QZTB62589808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3802d70704a4026f3497c1eed92e96f4864f34b71c6a0a7848858407a013e95. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:48:47Z), 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/QZTB62589811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37360f4a1b22fe95c377af9a12a4e6f21baf64716cff431eff9bed4789715f07. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZWFE2595094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662309e83b9acf8a6df401869fcf1851c04c196f4232e19bbf04edc2c469655b. 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/QZWFJ2517041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bca032b01c47dc4eae034b0a1f3a4cefd9c6e7f5958aa1ea5bade2de8bf6fc6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZWFM2508737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8999089f746ed5e6dcc14a8f675f4ec62505bffb1cefa19b0fae379ef61a373. 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/QZZ7N2515430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3528ef158df64a4da723149586652fb2615f7c50bae1fd690fc87d09be911f9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7V2532513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f0b5b20ebc49319006c21c3e0b36bcd8dc73f95ea7ab591df8acd3b3e9f895. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QT3EX2577318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f62843e156e7ba775063037dbde957bf65aa483e6964769a357908c8bc46bb. 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/QT3F72588610.