1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xdf53c35f2300163a5385ebd0f1e9fdb90dd3dfee44673d5581b905d712b81529. 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/38c777c9-9644-4d0e-8ea4-946dc91cdad2.json and https://artists.proofprofile.net/proofs/artist/38c777c9-9644-4d0e-8ea4-946dc91cdad2.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 → block OTSBitcoinBlock must exist at that height 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 0x2023e6fc2a5c965b112464c58c19ae28bcc8587583ca7314b0b38a29f5ef287b. 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/QZMZ92474099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fe99fbf901bf635430530a43f5662053275b82696348131ed7e95faf4e8eb6. 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/QZW9M2288561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f660d5729e0660b36c19c1b32c8b37076b21afbc19b87d1f32828c216e3cef5. 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/QZHZ52275082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c8e28bf4bd82a389b0949d392009e2e501de96b58a61a29e79603790beb1bd. 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/QZ5AB2251743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a0642f111a6a4111d1d703c247e00a3a6faed95d03471757ab011cf24d2a8. 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/QZ5AB2106046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e5f280d240202e5e00d674c344263d09de0111cf42b69ecf0d496379b31c11. 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/US7VG2043619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbeda80e61e3f8d321eb7e00fe2e26082d67baae8c3206d3bdeca0e94a13c90. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9M2373486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ea9a047c68e7dd8ab39c00c40b2d8526ee56944b3ceab7512870f8c0cef4b. 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/QZW9K2246089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd678f75978eda472ba3dbaf2eed3c06541fc46af1ad06d989295d629763b2a8. 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/QZGLM2201878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1014a6ab4a065a78385c3b398ba80bdd42f7d1471c2411d6a30689b9110851bf. 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/QZW9M2373487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd875ac7b1687cc874123cb8447c5c4c92637ed11d7cc7b7533dddf7c885092. 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/QZNJZ2173393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8f89bb07694798df52d6440dbc074d887106df7616d26f5508a637a851e7a1. 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/QZNJZ2355477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ba061c8fdd1ee541eb3c4b785f846364df156777104e4459ef8110968d11e3. 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/QZW9M2373488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7924029b515b825fa9aa086d0aeceb3178b84bc042aea40be540eaa5c30a4b9. 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/QZW9M2373490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3e4c4c763004d266d88cb36d710c4cd0b53cf883aa628acacaf9af255a045. 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/QZHZ31916300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3053620d6b86bcb82ec186921e0c90ea42e8aa7532096d067546ba4e3eba6a. 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/QZNJV2331085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671de5ee4bc309b4787ecaf8bacf13e79f519c888368a58d9c4c30d90dbc77c0. 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/QZMZ92129330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383bf9c6a713a391987ef3c607abe8d9b599244006726d89d03ac5c8391b0e00. 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/QZNJW2162904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8522df451e3123092bdccbacb5d82f9368be0d1e4442b3451f7273261811574. 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/QZNJW2162908.