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 0x7934df10af00c10681e470cf988d7d80e986b7169391dd5623345c5ea8790f5e. 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/47f0de53-e8a9-4cb6-9f67-9718f47a3ecf.json and https://artists.proofprofile.net/proofs/artist/47f0de53-e8a9-4cb6-9f67-9718f47a3ecf.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 0xd14794d045cef87dddb132e4ff3dc65fbf88a760ae60737e98971a421841caa5. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBQ5W1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a65f2afb101c75225703c74f402f6021b187581205768a7b971fe0200dc6a7. 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/GBQ5W1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e138f9381d5d9fabafeb7170a774bf6eee0ad1570bf792d2cbb2ed3627210d. 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/GBQ5W1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14794d045cef87dddb132e4ff3dc65fbf88a760ae60737e98971a421841caa5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBQ5W1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ea054b2ea5780cb80751f1da8d5bb7e3457bb89a941a93d23a5b85e2b2f379. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBQ5W1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d2c21b0809a807c990dcc38ed7b951268aa458deae2a4f830cfe481d6e682e. 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/GBQ5W1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a051d5083c822a59b5cbc03bf48341a337b6162def2bb91e7e123f7c7f530d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQ5W1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac5fe3c4a18ebff30872b5d506cf712c96c38055b04cc4a4cae6c7e9e40dbca. 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/GBQ5W1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ab39a7dcce588ce56569de0cdc1f3f8d99fc9a6d4992c3de680df6401d36cb. 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/GBQ5W1700086.
It's Been Like That For A Minute - Christian Nielsen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da9afd5c563674b466e80452bba92a9274db7720c7b32e9fa5a68c3f7175261. 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/GBLV61626427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2882072376353983cda7c111253877fe891b222f3a171ca5e6cad236e71caae4. 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/GBQ5W1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baae8b89e08ce80dd4e1a8a51e55658afa99c1a25b96a5fc8376bb1bca94841. 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/GBZGQ0800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba90d0bdacb95951d4b4d54000012a5282b604514377e3a0839b268a762cdd7e. 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/GBZGQ0800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6aa7eeaebc8979be0468b92b8b74440a934b8e60b00c009995d6982835991. 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/GBZGQ0800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea3d8b987a4443e4cb73cc20cf9dadaff88e73973dbe7101f11ab9f335f27d9. 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/GBZGQ0800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbc20f8154566744c3100c0744d9b9fcb7ee586051289113a77c602046241c2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBZGQ0800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8f6886af6d99b1ce40f82ce2f4ac05d21008e31c03901fd5e900e48197167d. 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/GBQFX0600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cc18c7e82b5c48b0a76e4e5fe4f7e4c35d0fc3f1d3704b350d94609b7951e8. 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/GBQ5W1610004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcfb0abdcd1a2008c1ee67eaf6f9eefbc4279fb4bc4e506fca323c0547e57e9. 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/GBQ5W1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025390fb464baf082a15f7c0aef29847df05ecf90e502a7534e85722ea05e904. 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/GBQ5W1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe4b3241c56d10e4fd5655e8121b9442d94451b9694162f024b70252402b19d. 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/GBQ5W1510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0e59c03c7b83e74b65096434f3830f9a235730a722f05562e97d3cf93f6799. 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/GBQ5W1300029.
Time Is But A Moment - Victor Marsó Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58ab785d370a1dff2e5210efb397616129e53bfd23e035b53a6b27aa5ae11bb. 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/GBQ5W1300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb9f5900d8504f76ae20fcca206047545aafee322b49e9be9322723ea10443. 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/DEKH10500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3d4ac27e8c6a1cfa873fcf9175c4e9f7de120feca13c0d36c610392ea761a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBZGQ0900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18a4a059260013a751897b79e71407f05de090ffad140ee4cb2d8602ca24b47. 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/GBZGQ0900231.