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 0x52e1901cd7af715a6cec5ec13216af37d07205a4cfff1619d73118605cc7961a. 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/eb0f46e5-5ae9-45af-935a-3b0a77761174.json and https://artists.proofprofile.net/proofs/artist/eb0f46e5-5ae9-45af-935a-3b0a77761174.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 0x16ad651a5204e34cf597225f9527d8eee44cd7b98cf370ff50430a48ddd4ffde. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE5Q51802935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c081291eeeaa6f00b28ddd344bda9664f50c229d9b62dda94fff84f3f454ba. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:57Z), 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/SE5Q51826449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791001a695dc2f26752cc2d83b36f30f9ace593ed58f075e8266f2cd5f7defb2. 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/SE5Q51823754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b6a32091e4b25861bbb4668a9305f026f57667c3f3d42bb543c5f1b89c5067. 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/SE5Q51824911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a4043cf8c2cecfb502e1b1dd934a9a86bf96631c54fcfcf61e72933336df83. 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/SE5Q51823904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc55cf04f6d754f6354778a7964d12d6f9d76cd9c1cd74d1b8d6f06121178071. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5Q51900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf633479b1ca8adb04af353ad35a1bb47f098ccd3c8399ba2f3ba91f405ad70d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SE5Q51900199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb988d82c69a8f25d81e9c04797f7e17f7703fa0d2cde2c09dfeac4fdecdbef91. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:46Z), 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/SE5Q51900394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503c40bd156b3a51a4da3074c1872f856f763f72503351cc5c397afa0638ca5. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/SE5Q51902247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628690ccece6b66c04f11f12b2f77b79146233f45a782ed92356b170b6640f65. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/SE5Q51903180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d29501e67e600291b11657f5fbd579681db9f11997193b15d3fb192b370bfb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE5Q51903193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c2e9929464b0aaf6057002e0a9f525a7d218c6c3edc0474e86a9f797e24879. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:19:22Z), 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/SE5Q52000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcb7bc207d8f082ba251445e3061c1b01850cb6d20ee5f6a32b908eab4b7046. 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/SE5Q52000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e34bf9914fe3c7b5b341003e3ba2977498c0c097510d972a11476e4126e7bd. 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/SE5Q52001026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939373593ad2b9f8f1eb216d3b5a7d07c242bcab91d3eafe14779505ff6bfb1d. 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/SE5Q52000463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7268dbf9d49fa362fc2ca762f26ae467b6a689e5a0c93c825141ad5fc82da4a. 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/SE5Q52001587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddbd734f51f0b69b0094467fe2e3dd5ddbec823350039818d48c71a65bc12ff. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:38:28Z), 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/SE5Q52002989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6af5bf8891c953fdbd75dc3c32a944b4e389143cfaf08dcc69f89ed28737f90. 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/SE5Q52002599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34e870624d71b2cafa9070ef36e3caaade022d8a8b588792db4f6c20c1bc46f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:48Z), 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/SE5Q52001878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e60b6f4717d81659fe37ede40e6a614426023d01412c191d58199ed74fcf46. 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/SE5Q52002596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2576c971d0d0b008c792a21048e63b28256df1471c9fbf8fb63805c2b255a69. 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/SE5Q52001910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51e36776e6ac8ae4adb49b75b26bc130f4bd4eb4af614240022b0b9cda75bb. 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/SE5Q52002560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b443ef3185408b2fd8ddffe2b2100e16592fa0be9b312f646d90ea6e38af1f1. 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/SE5Q52101496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f945d67195322d2cdda309f81c9a4f35ab9225e54681bd9ba6f35e4d63f045f. 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/SE5Q52100368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4992ae3ac3b7eab33a870370216d014e3f4d3caed786d225dc8191e79432a14a. 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/SE5Q52004113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de95c6140c7019dcd2cbbf5c36939034563245daf6c745de335f787cf16081. 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/SE5Q52003284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2957c88250a875aceeced52c62cfad769a36d68a38dbaf158641ea8b1f688501. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE5Q52200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09037aef045f56930d7fdfafa57ca42a3e57cb6eec620fd3d88918046a68a45a. 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/SE5Q52200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a93c13d59c181663bf72ead0b61e72feb4bbda883cdc0d65d0ae766442fa320. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:36:25Z), 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/SE5Q52301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca03adeae7495eb09d418c9c41f6717f060486dabae07c68876d14f8691b898. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE5Q52200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402c91e83b3c4ddd086c00a23056f180d3b994069808e26a0a056f0573fb1e30. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE5Q52301573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3c02813ac559473ec51ea35c82e089907a2e9da320660c21a4262b65b1a15f. 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/SE5Q52301570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4ccfaee54fe0ea5fb01d49b127e20f97100520dc90daa3656d8b3b966e996f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5Q52301431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef26c5b1d891a681822a3665e359e5aeaa336ed3f34765b992e00086e0e1e0e8. 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/SE5Q52303125.