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 0xa25aa03eae8f0d1a892144e83ed0aff52d88411057dd776cb7db7dc12cb8d9d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b0b58f3-c316-4622-8cc0-13128941c6bd.json and https://artists.proofprofile.net/proofs/artist/7b0b58f3-c316-4622-8cc0-13128941c6bd.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 0x0caedce700ce30b661ec21d568f8b989d51c0a65da592580a907ea90e40e568c. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMFMF1397629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3578b4271dcbdb411f49c8bfe19d8a2f11161a9700c129f07a85bfeac0e7b8e2. 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/QMFMF1397634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf51219703aa8c06980484a82e9607165e72965922e344eb59106b283144035. 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/QMFMF1397635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310cf8d846b2cdf484d5d531d3938b060f6f4edfa21babd1dcd668a1961feb1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QMFMF1397640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677eae60b72b024e09ae94f78319f8979877ccd3bead40dfb29b667804b7663c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QMFMF1397642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f5ef1d9e0fb4cf205403570d93ea0589dc90e2353269afd11af5e500e527e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF1397647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc898b38e2abb7759595e74f7b0e3743530b3a770695b8ff4ed4fff878bdb73b3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:20Z), 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/QMDA71385519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e944d45f292e190f32aff6579d1a1b35d4541e306844ffe0234d784181ad3e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMDA71385523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d052cb04d3359fadd69b69043375b0f43cbe27ed8f9865d18ef197e60730e. 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/QMDA71385524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5c661c2f0ebc5497be09a2253bb66c255b470fe67640f23886b3fc55b1afdb. 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/QMDA71385536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf215426f43689b1eb4f143c4d360704599a2869186ee754cf24142a8a5c043de. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMDA71385542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa427718c933f50a54a09455d9942ffd6bd214fce7c1f766d7fd579344dffffd9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMDA71385544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182a0bbc9ee4030eb43b45a4e1abaf396cb891b00afc67a35dd182a1de145d13. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:40Z), 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/GXF9Q2550018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457302fc7f34a93cb38ec93324173b5ac2923fc09a4da0abe53d57ef4909934d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:47Z), 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/UKXN22590313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af8b3d6ff7c5244c4a4db19a77561f8e53f95577488b98b1d50568b2c27ec4b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GX3Q92580648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43acd3587d8e772dadcb495fc9ecdd6ecb04ca1250b6fa82d30b518343e44d1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBMA22543031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f14f37e9de13d6cf621e06a2a5477f79d1ae4d7db4fed568aead25d2e0b03. 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/GBMA22543032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd0873a9d64f59e497259c6a62b8054c029a966c34d61a5153876bca29de927. 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/GBMA22543033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cc1f9204305bb3bf28ee927f63087e2e4a8b93ad5b3e082e5e2f21d4f2c7d4. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GBMA22543034.