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 0x96db4f6751d0e90e9152bbe4285376a1b968c9574eb46fc33a20a81076e6232c. 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/715d5525-b196-43de-a793-73dd3a31751c.json and https://artists.proofprofile.net/proofs/artist/715d5525-b196-43de-a793-73dd3a31751c.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 0x1b41298a6d79f594e23b63287436a8642749e091e7d970933d0dca97014b2174. 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/GX53U2484812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04687b1735c2df9fcb317e15cab44f719dd4c15ec289bdd40e285872d52cf99. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GX53U2484814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff8b3132d6782fb03607027342209ce1162d96750e2547797516f42a0076f9b. 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/GX53U2484815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e24cd6ef83732992d864b2fc7f57670b7184b38e934c5f8fa09b3cc2521134. 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/GX53U2484824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db6c916cddf937e38f333831a0799d000fac65e4ee462fb5f2568eb72eb75b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX53U2484825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9b3b97d818af835b909b822fbab895a73ecd9cbf40ab431bb5cfa750b3c23c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX53U2484826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab7bed391af3af30543d3f305e3da794321e21da53f0edeb369cbbe6abc1aca. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:56:16Z), 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/GX53U2484831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4106522b74dd03e46448183dd23f860ed6c75420f3d9952171c8485754eafbb3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GX53U2484834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb4cb7310e2a9e73134c73b5fb842a18acafc729dfe0c1533f958f413190df. 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/GX53U2484835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c82a6927da9b9cbde549bfff3598aa9f4e03a605ceb884ef1e50bffb85ab57f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2484838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c6f5c0b718b853b655d45ec7e46cddb1742b634a205d07d21f7f4d489f448b. 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/GX53U2484839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00163a4fc97e8278a86d1fa2422bf2e76b33066a88245e61c8280fb72e06b12c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX53U2484840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b481457ebdac81bab675c96c448612cda3d4a521b033ba56f15ddad4b4b1bb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX53U2484842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2a9386b46bd15a5e8396b6ff882e872365fb085bd2f58a8c62b3f3ac2df067. 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/GX53U2484845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e5e1ed06b377826ac0a73e721d4539d6783cb883b636d7ed4caf05b97420df. 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/GX53U2484847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea6b938acc12e7af39d3c6180a52e2878fbea343a78f0987a260b5ca3da68a5. 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/GX53U2484848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec2988c2418472b8601e0a58bf04b5837ada886c4f24b7910bc03b145b19070. 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/GX53U2484849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd94d6f134ae2cc1994b518b739fcc442ac14b7b9180933d86bee6604ea2280. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GX53U2484851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd70d7775a136e1aa22a68559341bdcbb858e291c83c3c0777acbf77033e6fe. 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/GX53U2484853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48c1eb925706653b827df9bb7be3fccd76ed28852400ae6b7f0f836e7a1b2f9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX53U2484857.