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 0xc4230250feeb990625e39c67f2d5cda297da38233d870676412c6b9e1950c10a. 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/deb3535c-d136-466b-b449-b7d0cdd405f4.json and https://artists.proofprofile.net/proofs/artist/deb3535c-d136-466b-b449-b7d0cdd405f4.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 0xf7fead4d14f46ffee8c5950fd53e40c1be63c0a7e67f4ddb3033ad918cd76a9a. 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/ES71G2240028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992405f11d36955e233e2acc54f63f50aed26fa954229b287b196c8b3c3d704d. 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/ES71G2240030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe080f49daa31b5961174becd9e23610365926288b74fb7d53559af2d5e1c68ed. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:50:17Z), 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/ES71G2240033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1842c7c832c03715931c2e04efdfdbef936344bd3e4f60f7902ec35effbabf. 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/ES71G2240035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8eb69b1c95e5649779d3d346d32813ec15992507d21f05f0f6b4a04a98600f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:38Z), 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/ES71G2240029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cbf4b8708ae02e3cc6762d1482b004c3a79bfc9d189ad18e7760f3f7b782ba. 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/QZTB42314586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f60b0b8ab6f7eccdd4f1d76d9fc621b98228e336fe10804d4e855420cfdb21. 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/ES71G2311911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934fa0cee40a272fdd5ca6a82d435cbf13fb066fb2e6d7d056e8ca95fab72884. 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/ES71G2214794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109ddfd69106f67da3c1cd77b98073958b7bca222e2eeb371eb6def4e857b4a8. 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/ES71G2208443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b57d6200b95b642f27b3c3950b42700d3239fb23f42323a7efe5157abd4ed0b. 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/ES71G2202761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5bd4d22d030725a4d1220a76f37065b9231d55fadd5d4882eb58d0825c0bd7. 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/ES71G2123345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e5d449675f5c20a21d0d58b8384639da7ce8b213ef174862a58a59b287a670. 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/ES71G2117202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2fb259d677293b11420352cbbfeaa10f4cce03ea4307910d24176f8ee4273d. 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/ES71G2109958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8be2b6d2a1352662cc3763fc5d00d7baed6e3bf25c8505974aa60fc4cabd6a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES71G2059045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf5289d8b3b65ee8f0c778487a8280409f92849bf9f9748eb65ba788f056af4. 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/SE6HN2079793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b75bfec9efdbe26e64152c0270a3a81411f9d4c9528febf7d2a63037edd8cc. 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/SE5752022102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f39d62ba85fa857d1563f4231e58b324f844ef29475b0f1ba8916d9ecd7fa4. 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/GX3Q92389018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8362c1d051cdc9c500d03ba33dc2d1bd56433545b4418d4d27a0d7205d13fa2. 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/GX3Q92389022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2fc6beb5ecfdf7ed5febe78a25f3142045b917da3f066c2a14cd10a470ec2b. 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/GX3Q92389023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d90e543e92173d10d43f5c9bb3a5cd57501d3673af86fb90806c72fd812494. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFYX2402719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986a7985f0a43241eab8f01ccfd154cafdb29fe748625c9dac718eb5dda43d56. 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/QZK6H2517768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4464921d973d7dced40b614d627d8d5a83d3db02880c073d4a5966d6ae6fe2. 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/QZDA72568839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c05d4c95dc637b199450c7fdebd477337fbd351049d1b06c514cbe8b50472fe. 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/QZZ7T2476219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa25561805a2a8419f7351c0718fcadd22bf2f60e4debc34b07294d4fa646065. 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/ES71G2429519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e4aae7c2a057fdedd16351f118d05588e8438e54ebabcd7f2d68415d216c73. 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/ES71G2420923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b48182e13ce0b41f3962aef7037ff7544bdef6a70a305c1294c7b124c3aeae. 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/QT3FA2556451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d015605a2176fffc54955f56df0bfda54889ba745494a90b11ca6de764b080. 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/ES64E2513051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0c608af4940af6b8630851e9eec05ab3636042ec945f61694e9d2aa8d06b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFT2599852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5a2b093baaa398f5deeee74604eac5c975da08df4df58b28cb13154125a65b. 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/QZTBD2551686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46161133c8c9ee41c75df614ae52460aa8cb9c48262ad0844a36ad8514358c24. 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/QZTAY2578550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e4aae7c2a057fdedd16351f118d05588e8438e54ebabcd7f2d68415d216c73. 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/ES71G2420923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992405f11d36955e233e2acc54f63f50aed26fa954229b287b196c8b3c3d704d. 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/ES71G2240030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e3096ca77967a8f5cb089950fbd1038e36392e97128d980a6f0c43119bf234. 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/QZWFH2592435.