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 0x0b8d7cb5c27eea254d52b00be0d2f2917be36258508f62f9eab24c6006e9c06d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b5d71b6-b249-4caf-be3c-0142ff37f661.json and https://artists.proofprofile.net/proofs/artist/8b5d71b6-b249-4caf-be3c-0142ff37f661.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 0x7bed91a5df38aef0c398d06b3e10735e2cf5a447d95c8476d06ab2ee35ae193b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7T2497397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98fb87a22790b1a8a8251c5bca6b4b67a88c7aaca3c623f0267bbecd157d200. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZZ7U2401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc694f89e2b61fbe086f0c8b1a0d97576e4db2ed9cd65ed534dccbbfece5ed3f. 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/QZZ7V2428298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4069c33229d952289b9d8d367fd9884f481c53464242921eacdf28dc890737dd. 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/QZZ7V2478930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa3acfb05d5ec8c7be22e6565447f075a2b7aad5b7ac283a91b66eaf4cedf12. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZZ7V2480921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf53daf28b174f6957289f71f676c522cd2d8f6304458b92b8b259ba5de7d64a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7W2474108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf126d75d4f850ea109041fb1c72e53081e07decd0fa64ffbef36c98f96f6f6fd. 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/QZZ7W2463568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ab4d64115c5b1ed1c83c6ba1f93a3fb14efb2b9bf2a195fd138a0b0ca62375. 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/QZZ7X2404483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6608bf42e7e0f9d84172625bdd406093ec1e8130d942803f3fd74e8d27f70240. 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/QZZ7X2455208.
Me Mumbling And Freestyling On A Majora Beat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d74c315d355782b888f134389e16103a42db22165492db2575c407fa9452103. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7X2455212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7c3447faf816e441bfa5fe75c3b2e67d1185b117df2cbb694b553b509e327a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QT3EX2401999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4852e64f2d9496b526c249e256fdbb2f89d8299f910dc2ef1ddac2598a56eb3d. 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/QT3EX2448764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590155e3d47adbb745f403db4ab2d4b8cf147de60d6e924a6f33e090a3ac1b1. 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/QT3EX2433983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc1b4655431c96bafad2b81aaf443ff73cb530c2b948af974243a102bc16176. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QT3EZ2436495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9a5d84c19ff400911ca5a2e98f2234758c48ee3e9136c7711e1e5e02af0a16. 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/QT3EZ2436496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb821c69b85b5b96a397b5e4eb74a9f3a9afc3c78877da97c6fcae7a2e07bb027. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QT3EZ2436493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641735f09add45a9171e6bd7a2883842af392a3f7d24c1ec7a0d3c3474c859e6. 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/QT3F32466181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6cfb1e27f7fbe144831bd2271577573e45be269497f124912aef8ebb02c195. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:18Z), 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/QT3F42428541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69609bcab2fd87fa0266ab77ef04ca4d1e0491555670bb3460711bb35c4edad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:34Z), 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/QT3F42431736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6811c612438dad38f090a64e9b326d3cc2a57b8528b94e6044f35999c12995b5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:11Z), 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/QZVEM2571084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0cc16678400aba24c1ce38801486bf8209c9c9df2f52ec4b8bea671271e06. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:36Z), 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/QZVEM2571087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde96df82398fe805b4182d3c4af2de01bc1f6e0766b6bf2de79612c20e3abe98. 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/QZVEM2571091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922d62cd32f8bb671df7d2b45c3fc55cdbffdb65749ab86e07dd11299b7d46ea. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZVEM2571092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeec4b28aa44d057d48602d6a77ed63981cd3553f1efacb245557d4f2b8a6d1. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZVEM2571094.