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 0xdd361590f39e9532e4e6ac239cdc3ea02ef9c771affd6c74b4c0c541b2799c8b. 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/2a22d233-54ab-4b76-9cac-b6251e3a3f81.json and https://artists.proofprofile.net/proofs/artist/2a22d233-54ab-4b76-9cac-b6251e3a3f81.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 0x555b353947a981bebd095a99bee9e98a4457ba41b09cb2ea9d4f0d9979b7039d. 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/QM42K1824568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fbb22906fab01465f128231d9f5ce29e90293f2a5f90f656ea31b454bd99cc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM24S1914918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4faa5a7ad2dde573cedc089f2512889a95e430c2f8757e98790d5784c9af889. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QM24S1914919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b3447b0713e874ae146781ec0b21384cf5107a32af6d03c07e8139e92b4d3. 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/QM24S1914926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee045ace4c4c2d73e425854481f6b22f033f5c326ca277c518f07a77195ed6. 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/QM24S1922316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7154b4f87b0f6e5347b531efc00ac917bc41b003a409171d33ee479a20900ba4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM24S1922968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c747fe166b3f2a942d71c3905fc84c4a7b6525291b82cc3db5afa3709ecf7c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:14:53Z), 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/QM24S1925914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1bf73250c7abab4b085a1028d628a8a41dc057e8565630430d079d8b0e5974. 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/SE6JF1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c788cc9d67b76bf6bda1a69c6ef1b3f3727a12aac9a83b2a7b93f40df6626. 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/QM24S2010347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76d47e7c1f074c5d82a1e81dc0de4066f386d7a53835d86001cb1941bf87e8. 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/QM24S2011400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6778ba28581770a64950d5854f8cba239ee0bfbb095e12e256140827b3e1c67e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:47Z), 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/QM24S2202742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691b9d5f7c8425b875c00481610f00d098113b1c7dd369528a0cb8b6df31524. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZJG52507140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4ea6d8bad6e7a2c7ff054c96739a091d5af1a5fca24496d606d65f3357a49a. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZMEV2520061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4c3dd21875b76604e35b322bab65d8704700a7e1c900a738192534cc9d7bf4. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZMEV2541574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d88c429416d1c15bf464397f1c8384f4eaa85a376ab454443f7c89b33f8b9a8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNB82595908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8a8f45a66e8005e13e51e75b7e7d5f61795121b32f605c213a090f22e95052. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZNB82595909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c28db10c15fe7dd31f1237cac6a4cc674f090422ab673f6a520db4d9292a6c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNB82595910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161682811f21e9acd8516770e244d87f0d17acfbce5bb158eb2eafa6254c6179. 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/QZNB82595912.