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 0x344903b3bf31b60d0d1382ecd56931ebd5e7f34e1e89437df718b02064b69595. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a4e1855-d055-480b-9d1e-2fbefaf3ef24.json and https://artists.proofprofile.net/proofs/artist/0a4e1855-d055-480b-9d1e-2fbefaf3ef24.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 0xbfaccbb7860506b168ab96b9fd75ba44f1069add0f13f6980b94826a0fb603f8. 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/JPL542400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145c9e4a4acea5e75331724010526e671e52e2bdc74b0440d28f4b64aa70dca0. 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/JPL542400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61220d7a296f3d122855a2a1141770bd86c74f4e127a9de899df6011a42e06a0. 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/JPL542400919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaccbb7860506b168ab96b9fd75ba44f1069add0f13f6980b94826a0fb603f8. 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/JPL542400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d9b8f43f49c08cc06eb592a0771dda88466452ace62b33343418711a95589e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPL542400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378dc93140ee67c81ab26b36e5f868f6f983bcbc19d8d5d6cbb9a9c32d23da0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPL542400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2cd47015f5253cbea5c97b0a7fb978fbe9e47264175870198768a41b137bab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPL542400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147a0904ef25d67945e9054a2e780665a77dc0237eb4915fa6dfc1da908f471. 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/JPL542400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0556cbac665d6a349f0073e85f0a8c8061526584b31975458d8660b1456cbb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPL542400925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5f7e05e93769a5af2bc5019e780886b14abce67cfb448c1ec7a2fbe5ca114e. 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/JPL542400926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c2d79fefe146b5aed9685ee994ee0d3f02c80803080246bcae0b553e0dfb3. 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/JPL542400927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743151c9665dc581e213bf909d6feb4912e9cc029ec48ad59f72aeb17bd31e1c. 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/JPL542500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e407457605563b4ebb2e483824aabd73da53bae858785239b59c42d0f3c554. 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/JPL542500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e9fcda73f807203610f7b8d099d27d305942a8a670105f40fa31aa183e549d. 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/JPL542500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147a0904ef25d67945e9054a2e780665a77dc0237eb4915fa6dfc1da908f471. 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/JPL542400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145c9e4a4acea5e75331724010526e671e52e2bdc74b0440d28f4b64aa70dca0. 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/JPL542400403.
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