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 0xf130802a9f01fbd23bc7f62c4d8ba0a22e8fea8e4d39461516f65963867ffcf2. 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/e809d321-7f90-4685-985b-0b9d99aa1b1c.json and https://artists.proofprofile.net/proofs/artist/e809d321-7f90-4685-985b-0b9d99aa1b1c.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 0xd3c416b0add090fa505a3cc6874d984b4ad41d95b45da187132b55adc5ae0fa3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:53Z), 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/USHM21001804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8435ecc4d9f5ad9df860545ad987046e306e3b4e8530e815a8f566409d49d22e. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/USHM21001805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb663d78c61cca6fe26012fd38ff2eacd49c1a0b2d090a332693c216c01d7172a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM21001806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47dd6d250d4f741614e4a8622024546ee4b62d72357c7b95139b4878432c6f2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USHM21001807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d981ca777c14d18697370a2c9a907346ebc1852f61c8bf860ea3e2d2d35f28. 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/USHM21001808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4106c9601e321eb272e8fb62a170b6dd91a33fa3bc6dede4c50eeac3e36d8547. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQU71104407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec15e6cb78f7d5d63b4dfb2d9f377656088e24bdede85e9be6f6532ac39ba31. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USQU71104408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6881f4178944cbd73d37be029297092b31e1e2ef0c6ea21e2f4db7c477423560. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:09Z), 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/USQU71104410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24806d259ae50c8a72cd284edc9c92d82da30c6c00e6a7ef0a4e5492adfca351. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:21Z), 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/USQU71409801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4dc86fa8997c12b6bb4a026e588a7f3c1266028721423b1beb97cc277839be. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USQU71409804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415c5d17d957acf68d45e1e598dee6537cb81170e5858c0c4af6e3fee1b5dd54. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USQU71409806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7baec3777a689cd195818140df10812820b771db8161fab5cac975c91b6bce3. 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/USQU71409809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7657783f44ea85132cb9a52f6c70a4f7855b2344c883902312774feb7554216f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USQU71409811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dbe3984e83c23ca2b950dc9182b665cbb00a8fcedf65e04fa3ddf5a46ffd76. 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/USQU71409812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16fdeea32e421cf1082b5547c5dd6849df4b47166af8789c3a719ed10547c2d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:22Z), 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/USQU71409813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f98ba043bd2607132d08d72aab18418575790135f5ed166ccdb5c92a2a0fc39. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:45Z), 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/USQU71409814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05186491ddc4fe1a389371f29093661718025f2e6eae079f395da0791da3f66. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USSTT2000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9e26c05c85280f3067c87d6df67cc30d7b44c3b43357aa9e721c78ff4d78b4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USSTT2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acbc1494d76aa5258afdee74bfcacd340ba7cd6ada03883eb6e4068ba4431a7. 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/USSTT2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acfa9b58a4ac7852fa9b597f11914e25b894322f6ff0fe2d8ef23c3764d7538. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:41Z), 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/USSTT2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ae2aec69bb4af31551e0b0991361cac1e0e9b5ded157420c7914a200bed83b. 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/USSTT2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05186491ddc4fe1a389371f29093661718025f2e6eae079f395da0791da3f66. 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/USSTT2000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d4c5bc3bc9670dcd575df022886ca608894dcdd2f134505af4849e115f249d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USSTT2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9e26c05c85280f3067c87d6df67cc30d7b44c3b43357aa9e721c78ff4d78b4. 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/USSTT2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34134605234eccaf7eefd698bd94aa37a90968538190e3f7159358f25c6a0b76. 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/USSTT2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acbc1494d76aa5258afdee74bfcacd340ba7cd6ada03883eb6e4068ba4431a7. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:14Z), 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/USSTT2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acfa9b58a4ac7852fa9b597f11914e25b894322f6ff0fe2d8ef23c3764d7538. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USSTT2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ae2aec69bb4af31551e0b0991361cac1e0e9b5ded157420c7914a200bed83b. 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/USSTT2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b08a667692fb2416f6ffd282484b97395802ff3a90c77b83bd3f4e06f4505c2. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USSTT2100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643f2c8cac60037fb9bffd2b3462ce49a024d41a81ac892419235e660e72dc2. 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/USSTT2200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00ebbfc6484d8e831510b1eb77610ff06a31d6a54c0bfcafb993eb9eccd08c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USSTT2200233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643f2c8cac60037fb9bffd2b3462ce49a024d41a81ac892419235e660e72dc2. 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/USSTT2200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff2f44c61563b68c4272a5ebd050d691c785836b8c7ecd10166ca19d9909b08. 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/USSTT2300218.