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 0xfcfface9c30d2e26089eb9d03a9ad4b7855b81cecb3cbd5d5e7fb45d09808a26. 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/35c911a8-46dd-4855-8a01-8a7d5c76afc2.json and https://artists.proofprofile.net/proofs/artist/35c911a8-46dd-4855-8a01-8a7d5c76afc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Twirl Me - Invisible Light Project Remix
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 0xec1fed468890802b76b455080ae15bbae52df2857218c2a5b1581fc70571c1ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USX9P1352453.
Dawn to Flight - The Human Experience Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4062df6ae42c70c5a4b203cda5f0b3fef6ca0e8ac835261a6a74974bfefdb8ab. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USX9P1352457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06797493efe05ba6df10ca6224d46b06186e97ed7d45822c282d327e69beb14e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USX9P1352459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbff01f9559bff3a4215c1aedf7ba6c03ecc7fcbbe41304b55a3197c8e05012. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USX9P1352461.
Save My Mind for Later - Dr. Toast Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0519159b927a6c1c58237dba715e7a8c1202f739e15e25f3a93ebdb1ed03db5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USX9P1352462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e500091c326c65ab9a4a1cd9045971be17a0e37362b961a51ab156c7f29973. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P1352463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5df653381caa14b16f56f0d07b3f82a63007ac94330730aae5881fde42c0e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLJT1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e4404642d5365f69c86b8d40fb6c059bd42987b87780e8e4f689cfd4dad5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLJT1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa1d9d945acde6ec921315f8fd238a29d4fa8bc3ea9670d0fdaec9ed15a19e7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLJT1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2457d0b06541c8cfa915a2b553704d59620a35a5023b15d528a0b947a54127d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLJT1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01abc430cc606645ded78eb039e72a3de2e1500e61183a252bec5a7faf1dc11. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLJT1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e6ff15e3f9f6cba0b7deed3be388cdaf28cffee8351f6ed77d51e8d72e8ed1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLJT1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac311fd20352ff1c321260e2ab56de492a6b69839a9ff46d7e196beecbc7c662. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLJT1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1fe47e71aa2ab2c14b61f88298c8cc4bd3ef69496de7464661fd33420aa1c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLJT1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830233d2d87d18f062e1a8e0b7811cdd51c35905722ec0d411a6a8e5c62e14d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLJT1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afa7ea662c65eda06156492bef0876965426e3a75d6bba18ef062791d46d578. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLJT0700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0f0887affede42e72d97335a518f51280b8ba263d67e7e831a14d77fcbc39d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLJT0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13bd5789f8cb3960a71c116321aa96d930a07f3be2e429ff9737d6ad59519e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLJT0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2e6cadfdef6024f9240c9c42fff821e39edaf7cb7788a5d5396bc3ebd6eabe. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USLJT0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7846a5c597854de5f48f2d6af598c59dc01f20e45fddc2a51495e04975ba9acb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLJT0700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aebd7d8dfae7c1a66b44a289debb3aa6486fba9b7535e5aabc6aeab17b41cee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLJT0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5136adb3762322e30ecead3fdaa605458e4dfc32129722bd91678830a549d8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USLJT0700002.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34dd90453ac9ed611d640c4dad04cbd3510525def66d6be3fe2ee9a39bcd89e. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USLJT0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a2f3345c455b25c770e3e313e428200b69b6216a83b81b8cc57e25045157d6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USLJT0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a834c98199a7e2e13831148e6e006f2c777a60d8ff5c7ef4369ce0e4fb9f3f0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USLJT0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66080510fb77ceffc6c40fc4f7d5dc53057a440651ea6d6123b007cc6544e6a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLJT0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a62ed9935ae9250b96045b8a61d0c4ee11595fb0c9e108cf3c1c930b6f4fdcf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLJT2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a12eee58a96377b958edd7ea7af45920fce709023f9ccee0945c5d1384a1bf3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:42Z), 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/USLJT2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed4a38961b7dc6b65af007fb13d53869fe1e08547527d94511eceb43652de32. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USLJT2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb82979bca7e1bebe6ecd68d6cd340eb4933680ea80d04561d06a89fd9f321c6. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USLJT2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92974cd09c5be43a1794e642a92d33dd8edf9bce33221eee1f5e9795f78c8e16. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLJT0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21180972b375bc0d028c3ac4433a92a2049bda55ecfc068520439ba1564dbde3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USLJT0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bb1002b2a20992575178c62102cadcc4db0705ae1f18c92fa49edf602eed3f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLJT0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e8ca155052ab83b46907213756bf486974b7dcd8d5ef63af90fcdd6eccc565. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USLJT0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f55c61277727b91998171503f07fde7781d74c90fba939c0ae43f09e1357cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1123263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed48c783951cb7126cacb467f9ffb3b3da05a1e3816918ddc1a82fbf736c92d3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1123264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0171584d15d8766af5b685bbe955619ea1c83bf3e81b1fcc31f1f23fb067c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1123265.