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 0x2e449265a60cd25f447f888e453332efa0f1da41a728f2a17dfb215696a405d5. 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/3188e854-6d6a-44c0-b581-5eda0cc12db5.json and https://artists.proofprofile.net/proofs/artist/3188e854-6d6a-44c0-b581-5eda0cc12db5.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 0xa6d04ea770343b2a1661cf0150409630721fb9bf153c64cbdd3ff4c31939e933. 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/USMBR1007274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4063d4874d9f20f3bab858fdebe81119a4418793ce968563f00dd76d7c374fc1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH1721261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd83c9f0f1dbbee0aef18e1a64c73d14e89190dae3793b1396ffd4cdc66c06ea. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:58:44Z), 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/USCGH1721263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4293304a6afb21ffe6f24955ace788b18fa58018981125da2a946842d77ed38b. 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/USCGH1721264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22fea3fada9904adb954a483629815e1d94d0eafce6e0907f15e3797a343c14. 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/USCGH1720365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd1bce9b27a56df84990edb2dcf08a71d306fbc5f0bfadc612ee665bf9d8620. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:55Z), 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/USCGH1720371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f4e063d0304349a19adb8f8f4ec00c032e6315f689a871468d1b9a3cf25d65. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USCGH2095156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6706293cf5aaf6b4c9d62dc3fae1cb93f5305403021f6d58656dafde01f87a. 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/USCGH2095157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eb7317a6cb6b5fc48a9f9f667196fb307827d2fdd8f12b9b38af7fbc907cf8. 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/USCGH2095158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c86b1a45ab6265132a7aee76522655d84b1fe8e33ecc7f18a6afef4838d82. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:22Z), 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/USCGH2095159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b3964ef2ea43240bb576ec627b43ebbe03759b55ab862aba39f2938155fc3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:40Z), 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/USCGH2095160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db74e7492be1d7f8a22735c505c3b4fe98275559c43cbd65f83ec2a6f6d8a38. 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/USCGH2095164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bc803cf643d03e92e7138d9ac74394e7c8add0257e3facf5c6e2b0b52a3228. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM82221661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf5c3063ba49f60fb5506a504c99b5c2cfab6daaad5b272fa640f7728114a3. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM82221662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe857a1f4c1bc6b7f6881633532baa6945a2e05b5242eb6171caad39ecdebb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM82221663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8893fc520f1b72bb7b39d1097c615e6005725a3e404efe84504fd930d4e489. 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/USHM82221664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd89bde663c209b76eb2c5ca947ee24c5d96e803a083517557028148f9d3cdb. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USHM82221665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288d5f826b8b76179d06eee6e1a04724b718bc3a549cf53500b333260af96d7. 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/USHM82221666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9b29af60a015c752e42acaa1c72dab26f5bda70c9df5ec36c5e8b1bb96e13. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:48:11Z), 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/USHM82221668.