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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03af5515f60ea54037a16f94b74f187172103f23a34098c15d1f26f901df31c. 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/8f2d3fe7-8b2c-4144-bcc7-a3e0cee813d4.json and https://artists.proofprofile.net/proofs/artist/8f2d3fe7-8b2c-4144-bcc7-a3e0cee813d4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b3a88de6015cd0511289942a44a78eae109305db1f19910918e55a48de1418. 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/LVL151902674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336205a2f468ddafbd94a6b4f464da6b71cea284c143bbfb703bba5724fcc478. 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/LVL152201067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3a5879ecf6546083912bfefe84df5b5a9f8ada7032d1d747c775ea167a294d. 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/LVL152201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc565cb3b96df5648703dacd02c3602ec2d06c25c18f03f23a14aa3acb5f05a1d. 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/LVL152002124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d4b9dec4e95c7308566cb7ae98f94d15ea821e747cbb17270ff4a432e68cd. 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/LVUC12000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2419cc6b68b7540d926a2338ac0048d5e98aaa9e589536f84b965cfe9f5f971. 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/LVL152201071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b020ea1ea95d48eafc2b2095f3a7171d2acc6be20f04f39c852761dc095526. 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/LVUC12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b753a6f6b2ea40f14192c7bc645395a060feae4325efb0de8656b39f90a263. 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/LVL152201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa0e3366b18f87aa34f63bf54059da74154f20fbd34f7b58d701c105144a528. 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/LVL152201069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d4513650fa344cc32594bb7e1af1bc9cc410707f5052709b58cbca7aa47dd2. 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/LVL152201072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f0ddf4998c1f0e9c7a496c08f4664b36fb992ba5cc28d5361bb643698ea744. 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/LVL152201073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4f6657ba083b145f45a3a55a99b99a811d029cb2c71d2554715ecf4c0f770. 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/LVL152201068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9537fd8c8638949fbc2039b709d4724ebad2befd946aa06860bc10b6e8dec9. 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/LVL152402790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28601e9f75c73aaaf9ced1c8a491057005a53efd6a34b657fcd24c846cded34. 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/LVL152300511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b020ea1ea95d48eafc2b2095f3a7171d2acc6be20f04f39c852761dc095526. 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/LVUC12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d4b9dec4e95c7308566cb7ae98f94d15ea821e747cbb17270ff4a432e68cd. 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/LVUC12000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc565cb3b96df5648703dacd02c3602ec2d06c25c18f03f23a14aa3acb5f05a1d. 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/LVL152002124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a65386c8bcecc4c71ea38dd9d9fb06d89448eb91469ba42f399bab3fee2f4b. 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/SE6SA2427933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a7a6f35c9cb250568a7cf1091a0a7d2905140214715fda47618430cfba166e. 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/SE6SA2427934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27145177446608a4d44d9914ca8eed8f61f04aade0631cd26cb7787fe48abb41. 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/SE6SA2427935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91322b05c0aca805cfd51c72a278cd19a75555efbd2dbfeeba85051e1496b8c. 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/SE6SA2427936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f9800259ca0d47306173fd853af20eb32d3e842abc1c93b8dad0ac59986e0c. 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/SE6SA2427937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847e9ffa9cb6f8fed544b827478a1a24ebf1b82ecc4e1630f3ca392a9cec0ac4. 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/SE6SA2427938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fcbe177f608638a7a5157593377b9d166edf3f09e3ebf619193117a7d32b6a. 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/SE6SA2427939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f2bbcc8015e72226a41a095f1c8b88d35cee2e5d19a50384d24f1cc61b6f92. 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/SE6SA2427940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52420c124a3371fba28c356de0f0831e4642ef984329b8b17ed01adcfcfa6c4. 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/SE6SA2427941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dc37ea16e06b17862345c666e584aa61387bf9e41fc5a6d24e7fa041cfd977. 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/SE6SA2427942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb6fa871ffad8ab8784be1ad0538c7b89499e778e31c69d2af7731b8e44e4e. 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/SE6SA2427943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae8ea6cf914c89ff6466224212f1fccf514a48bd864a460a26509272996a258. 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/SE6SA2427944.
Zeme, kas dzied (no filmas "Zeme, kas dzied")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a311b9cc88de08906916f40a2e6d1ed05b6087b891e80951033d5c629a8a25. 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/QZWFU2459795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d87e8555deaeb09b74f9a844cc2d1217e7c70eb3e8205a069cdf4bfa40d874. 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/QT3F22473315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b51327e7f88fb1e4400398b507ac720fa19468271ec5dbe61d585b143915e4. 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/QT3F22473322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d48e944f8683d10f32766e5c1d18b2b0c2b3dc3252111a765283c98ba9f1c4. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/LVL151801229.