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 0x18c7abc0ae3754ae00cf921497acb4aa4e30cba48aef6f48450e4b46909b6490. 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/1a51f815-eefe-4fea-ac21-97e5d6824312.json and https://artists.proofprofile.net/proofs/artist/1a51f815-eefe-4fea-ac21-97e5d6824312.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 0x592dbe8b2bcbd56434e70ba8f32d55a3083dc0ad25fc46356d66e94b1c2c72da. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:30:53Z), 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/DEPI82440337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf96e97c3a89c37ea3ef5274b59df3a8bf9917d08e25a16aefaf05b459f6785a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:16Z), 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/DEPI82440338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa29d6e0591982c1eb7f9662e7d0e965fecddada79a7084c9592b2a7f82063fb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEPI82440339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103a6419eab7a313e09027db125260418ba08fad8e02f0cc995f7f28e5e3829c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:10Z), 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/DEPI82440340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6bcf1fbbb2b23e93431a7a02143ae773f7c75a95f1f08356a4d01f8db957c5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEPI82440341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e288b2a193ff67633eb38c84526fed0b2c30c905c72c8a7cf5265644674e5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:21:34Z), 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/DEPI82440343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e47f3c3d241586427b0631fb300a21dc2f377502eadc0221405dcdcdd82296. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEPI82440344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf46aa4686b1f6504c8e0c6e5e42dd74bfff8fcbbb1d05f2a41dcb052f3521f4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEPI82440345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe571e389c5d7ce338b58e47f451219be8e4e21c5205ed6e82d97146f795d4a1b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:22Z), 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/DEPI82440346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26fed20821933d1a284e0a488f7121b7004fad25cec8f6b30204536fb061dc8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:00Z), 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/DEPI82440347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd713703ee55eaaafb9d84f6b034eafd422a1ddf7e31f48417334c5e2f4c004ef. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEPI82440348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cfe440591eaacfad7565b3855dbc6a09d752326521cfb089dbe063211aebdb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEPI82440349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe95de0261e2584cb76083ec8c8b8885f2164d668cc6da313648ed261460d225. 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/DEPI82440809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb1fab6816d10c68c20fcc71bbf408c6f1b28c6d625a6f49b6d1b25433aa5b4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:17Z), 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/DEPI82440808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538799caf9c21caff85dc6e01422c4396bf0d3722a7f10ebd61031d13ba8bd5a. 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/DEPI82440807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799b6326458312f8e59f7060b2789a3106eec2c07d4df29329f329cee196cb09. 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/DEPI82440806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d25973d11d1518fc64d8d24b5df1c5281230ee3798b399d1528930f7b72ffcc. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/DEPI82440805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ece7f2538fbc92d394be64c9dcc7eb3dd30bec8f95fe6b412193a29173a4be. 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/DEPI82440804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc739783042886e2bffafddc9250276cc082fdafb60551094fc6d8886b20bf3. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEPI82440803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1a14f09883820667bf6b9eba7c17783fe7a1fdfbb613aef6ad7f79affe0d2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEPI82440802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345b799fc906069e7c1391d5325366c5f7ee3d79491904fa51ab527937495763. 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/DEPI82440800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13edf842a2e5f5ee9b1f56703f7df918e877fc70ff7708b16252eb31554718f6. 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/DEPI82440801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d79bd4ba77cc7b9f163676760a6348ff5d4241d1fb3e3878e4c9cf421280f6. 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/DEPI82440799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f4fbdfd244fc41c657606a0e8265c240a6b6fb47e5b05d577eb5e6bac80c4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:28Z), 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/DEPI82440797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b5e86ca379ed8fa1a8b201dd592090abd92bfdb4633e467c3bd8f7ae8339e0. 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/DEPI82440798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa759cd32909eb9ff4a17677198503d19784b54f312e9a93c70837a59671df2f. 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/DEPI82440796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e68bbb40d18f071040505f5eddace38b7bd354653f7c20bc677bb0eeca6b4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEPI82440795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5eabb703066c8eb8afb28fbb7909fcc9b1c33ba577e4478c12b8fc318d71c7. 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/DEPI82504521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4099b589794450b7290a677b725d774133fd988fa8d5de7831131d16e8bb7b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEPI82504523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072dd1a3cbed75234df62b835b55dc54888b8f29585f10d876e14dfa4836baba. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEPI82504524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e6f93afba94a1aa59961e2b08a747aa9da7aa796d12c07bab60f9fc4293c1b. 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/DEPI82504526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f1c45437f7cb352ba273b78d5d9be15a2b714df7d87fd24e381f463b005a66. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEPI82504522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209494b2f348b6f80f70013bd04d576cad6d8011b9638270c778011c93d6bc06. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEPI82504525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e33943052d565eec78651e8550eeb6d2e18d29a643b3a1877b611866b37013d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEPI82504527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64cb01e0d88073a2e65bfef037a772b647d7cad385ee5df9a06ff5ca48b25f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEPI82514710.