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 0xf83fc5fc687822d6f947c391f073d7f516b122431fb661e5c2f87f88cd99df06. 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/7751b708-2b6a-4261-b305-a677347f5e40.json and https://artists.proofprofile.net/proofs/artist/7751b708-2b6a-4261-b305-a677347f5e40.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 0x781644db35fac2342bee94d6f0c52133c04c37d5aaa2c20df9bfb499b6346727. 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/QZHN31924113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136e27f239dc2de6569cd76e9b178eb7f96e252f849deef4f5dc7566ea4df1d7. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZHN31924117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d2127452cd7d92928009f0e45c78a58f7706ed4c95ff685948bee3e9c277b. 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/QZHN31924118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cfe2d78ad1c5a84eac4fce47f5388679762e2e17a978e38569f9a7ed368c5f. 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/QZHN31920303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e9753979e098b3adb3ad46ea12c8aefce4effa3f548d7466f1940ee55d7779. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:04:38Z), 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/QZHN31920308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9304afc477b6d7db70611e373dc50c5358751e898532fb585c50c44960e703. 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/QZMEQ2048272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29186eddc3578f821cdcce405b1368920f29c64ad0951756b5f8010b43469fb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAT2279425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee9fec41bdc4b210bef2aeb33d65659b7249c68c9f5d4125b1dc031ebab4ee2. 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/QZTAT2279428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea002a50ec0776508daf255a7516468aa37fefd51106c6a8be8438791d8c214b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UK9AV2301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be121b9a71eadfdf606aaf2a987032110fdf23f80275c033758fb05d9d9a97b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/UK9AV2301031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f41ba9e5cfd6fd6916fe9f54d496084fee9ec5a4402e76ca6abd70a1f03169. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UK9AV2301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dee8a779d0945cb7f665c3a42a4d62de5c66599159439555b37309718b858c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/UK9AV2301034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda772d9f6091c2b9e1b68be55f0aabded53969738c020ece625ba4b084de61b0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/UK9AV2301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc996dc4e2cd5325db91ddba281c397ae8b083b6e1bdf8617144987fd665e5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UK9AV2301036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c20e9e63c9450c3d56aabb8c0039d8db4da1880f572f6e157aaf8f76ab7c04d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UK9AV2301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb95fdeba7174b2f7d71757140e99deea2606bcb0c2422a56a4e70ca2fa63408. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:02:46Z), 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/UK9AV2301038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62685ae9330844078362b141950cace24faf9b9e002fa242e22f6015ee52931. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UK9AV2301039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde786bd516648c797494ad6afaff83c4145591488ea5ba71031c87fa501cff3. 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/UK9AV2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6807a0cc8fb18c265be9cec33f6651801d236a2250fce147dcdc1c4e9062db7. 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/UK9AV2301041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c2fff7ed46d06d5c3d109c7e5d6e600f2ca5b36b86402358137843cc3398f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UK9AV2301042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bc69c3a166ff36c51583d9c7fd7b30d79f73894680f032f5428d23ae913cd9. 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/UK9AV2301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3737d814c294aea2ee0d316a65faea1c4bfd72cabf8d71c0fd90f147405d77d7. 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/UK9AV2301044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de8f5bb69f4dee03648dbab996d44621f51ea72599eb020ae456cc63ccc9ec8. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/UK9AV2301045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf654fd716ebc722838c0abc10f484a24a0b3de7e95ab6630c09c4bd3152adc96. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:34Z), 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/UK9AV2301046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4c5642cc3df4465db168f6cc3e7d37e7a56c2577b1e27b0a329137b4fd1905. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:54:41Z), 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/UK9AV2301047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f62666c701c1f5e9ffd35f9aeb5118f5ef1defa04fd7c72d80f8c7e8481241. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UK9AV2301048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2998184ccb85bb012654ac3b03329a357c9abb080ac2f0383bcdcab89d26132. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UK9AV2301049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911be47148730b6a0c08012478bd5188427f4ecab67c591ebe9ebfa0da9079ce. 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/UK9AV2301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebeb044e95435d8eb1053e19489af89f5c7633c22730668d3adf7a3f3078951. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UK9AV2301051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028602c2bffa6ff46e6cbaf48b5cb5a7671e87d4ce6e92369cc1c748f913296c. 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/UK9AV2301052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fb53477cd0ad876cf24c3e6f0758dfaf13fea90e664cb412ffa1b7434503bf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UK9AV2301054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2cdf2eff871732904ec71961a0973e16f1a9280d4b68b49f0849224865a334. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:21:50Z), 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/UK9AV2301055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6fa7f733490d4db0a228b19577e227e606f93e894e7bb1617097fd96b8a489. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UK9AV2301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e12418ff7741d0f2562af69975ae45cb436fe368748a8b24fc1dbf0406525ae. 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/UK9AV2301057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17461fe0018a325db86228bd4a3ee97c9efdb6106dcbe7c99d8baa5501d785c8. 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/UK9AV2301058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7371ccf2f608b79c539bc9b4b84fb46c0a22de933335e7ed03c28ffac70d6c1. 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/UK9AV2301059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898729227a1f8fe4188da1bd06983b9733b83e525a1a80bc144ca5a08eac8fd8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/UK9AV2301061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3cc6b8126491e26b38f0bbb06c69a5fe233c66aece74e5320cb062021bc650. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/UK9AV2301062.