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 0x9e7bf2579122cdd94cf833fd7554e363bb387d4cb7f73720a1f014eb1caa2256. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73504a79-a4e9-4944-b013-abb3f9459cb4.json and https://artists.proofprofile.net/proofs/artist/73504a79-a4e9-4944-b013-abb3f9459cb4.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 0x50f6d6d75478305ab9095c67d9617587ef7451cd96d0dd5d21f5f819510e2810. 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/GBGNS2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b21c3210121fa298fa364314445bf8a76f8ae69d3223f97b35d54c045bc78e. 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/GBGNS2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b15016dc28346f563a7383949c10e0078b47167375329b792c86697dd0f0537. 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/GBGNS2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff10fffd06accefd181993df3aa2d0289eee30b859d6992b3791651a981ac7. 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/GBGNS2200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abb708135a757d34e826358c24f3a22126d1062656f0b762b0434cede32cf33. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBGNS2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd92bc20635e608195e6791dfd5e85f175fa5a3235b868e1491e271f506c233. 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/GBGNS2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363e9140a4773deed5d3d2565e783886628449950f86d3816010d942e3d80d8b. 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/GBGNS2200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40053a5d6587308127eb8b45442623a590ce1c5b048a2e0a55b583af3c8dfa2b. 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/GBGNS2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919cfb42f6bb09cbae2f55ec8ed886ec0d800cbe8f4673db1ccaf767a1efa0aa. 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/GBGNS2200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f413d422bf215f10c1174c918d63e4f253747b95310dd9db00fbd36207b1e. 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/GBGNS2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc395fdb5482a2663b33baf84125c0d323d4599284b1efc4a53209e726f6ac649. 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/GBYEJ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5db52fd1c38cbe275533eaa69380977d93f10580b4aa886b09cdeb26327e64d. 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/GBYEJ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd34f50f1f5f636d06bb0da099655493217b3d2860b25dd04e88441ea6d1822e. 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/GBYEJ2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a8a468beb464acbdc298f9256cf88fdeb9df30ccd4b941c8f9818b97f86819. 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/GBYEJ2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87769df39547b42c0d36fa952757b47029353514da5225289f4da49c807bf66. 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/GBYEJ2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0235bc20e1338ccb1d924e29dd1ea9db7a8e507a6f75db1464683ad175175. 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/GBYEJ2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250d2580290d459578b9bb76e1ebede1494dc3c4517c3284d9a9edd694aea402. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBYEJ2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e926a0a808a799fb6ad443e27a1a28e8d790ffea592675da557bc7b575ed3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBYEJ2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091cd05cedfe6e1a696d0704f56b06f49be00fb7bb03b59e31239c0ea81e2baf. 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/GBYEJ2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd92bc20635e608195e6791dfd5e85f175fa5a3235b868e1491e271f506c233. 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/GBGNS2200108.