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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 0x0e81c60e8d0a43e141335c4c450c454f43d431a87c44daa35a3fa6b8e521df60. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87ea031c-ba3a-4fe1-8dd5-31e8d50a6362.json and https://artists.proofprofile.net/proofs/artist/87ea031c-ba3a-4fe1-8dd5-31e8d50a6362.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 0x6561b746f8e9b7f5e945bbffb43688b8d86482a48c78357183c4279ff4490ba2. 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/INSK92400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1fabec98521787e64b24b8d78f6842546ac1625743a76e1824a44f07b7bf66. 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/INSK92400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df63c78df772df402259ef63ae0d862ab47bdfd3c8f13cba54b0aec547da8e. 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/INSK92400973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404034544f2643f9d910bfced16f04b4725758c8d48c847af6e817f46c84f015. 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/INSK92400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f39d3d6f145f770087db7bbfc37da71b6c6ebe87253013edd8c0a16b16905e. 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/INSK92400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1cf756c8c176195ebda4b2f2424757dd2bc38a7297279154a742dbe3d73fbe. 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/INSK92401194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55fa9371f5f7045b43075983f0d3fd04e2e5423c58582612ef95f74a290fce9. 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/INSK92401100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191fb4cc155c46a0317e07c2381ae8542b7368f421d0fa6b691052ab0e639056. 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/INSK92400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d67cb9e99ec251a248a9afc4f1515840289fe3590db9a097d0e2917064f628. 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/INSK92400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d862deafda89a9e1eba07bac1f2f3bb35d908e84ea83d282596d2c1d0170c. 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/INSK92400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf085a3491af15963003e982a1294441bf7c20b86ebfe63b2ad260c9be263f5. 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/INSK92400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94496d0287954f17020c85c233c3625d918d72d12cf539636c6bfcac2647141. 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/INSK92400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c476145e86035a93a9df8f9a338b4afa93e48adcb36ffac7efce0341aecb011. 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/INSK92300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe64852f3cd921e07b72b8c873aa067dbfdd2595ac7e1b760551358a1069bdb3. 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/INSK92300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e27519c7423d7112ace5aefb46417e4f7629c1e6d19b55241b291707070fd. 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/INSK92300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dcb8981f89e921a27c7f7aa48948937501e73690eda82632fbc74c627908f2. 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/UKXN22267806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5717506f1bb6e25666b00f9c637e0784dd63a9f850510873bd65f8fd0f20971. 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/INSK92300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f203f2fb5037e3f6ad3559004ff18a57a6ea37cb41c18b44136ea6936094e7e. 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/INSK92400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f60bc0e5ae0d815ba3de4fe45ec38aa4c155fa47f0f08e799120d77682752d1. 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/INSK92400453.