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 0xbb78d8975b6e4538485917a92828617d3e33a35df298d161cb2a4f3b110a5fba. 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/047a69c5-f7ce-4dbe-93ac-f4b0586c21b0.json and https://artists.proofprofile.net/proofs/artist/047a69c5-f7ce-4dbe-93ac-f4b0586c21b0.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 0xf6d9107d3dadc740cd0082186e4cac8f7e4a4db59ecad9ace93fc10a0a48891c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/RUAGT2445789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d9107d3dadc740cd0082186e4cac8f7e4a4db59ecad9ace93fc10a0a48891c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUAGT2445789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc904e5a34429a5278291e8ffb09fb990c3f0fb27cf13a1e563e29749bf6cc274. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:51Z), 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/RUAGT2464732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda238d7322a33b1b114a5e6086b7d2aeabefca3d992cd732e8dd57d2e1afeb0. 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/CA5KR2500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c7d02bf0bb1cc341753c98bb1d3c6ef7c7e6ae39e156c59513aed85c4d7b4d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/RUB422500688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f469107386e3f10526dced5641cb31b0a7e7ccc2afdfe3237765cfd030b2e08. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/RUB422502531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f84cbbbaea9cebb5031e891fc3666e13cd7850b6ececac7ac50528e0427ade8. 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/RUB422502532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee828f04980249238efe4b32a35fa833cb314aff1b8fea5623aa3ae6bab3be69. 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/RUB422502533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9caf5e66e79bf767c308385d9083be3ca7fbab0b1480526ff6aaf26eb4eaa6a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUB422502534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ed922a0df711a4d9e6492997d48a2e83b50dcc7af89458985659ec7ac4d1ec. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:57Z), 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/RUB422502535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54142ef0b159e8446a281379cfe32057276a575daddac94a413df6a50d59979. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUB422502536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ed48151c9570fec78a8cd00d8899082b8bc0156171ac2552e80275905a1b7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/RUB422502537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b612bc9f2091bc4918b554f797b83b7d7f8e29a13f351f21fbed3482dcf77a9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUB422502538.