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 0x2a0aca467437ccd4a63a41fc8a7d9514afa2245647c01fe80cb653c0df7d2c7c. 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/c193b6f4-1fec-452b-aecb-355d83245ad5.json and https://artists.proofprofile.net/proofs/artist/c193b6f4-1fec-452b-aecb-355d83245ad5.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 0x6cbfd683b3a83361ffc4ce82e30a51357b37776e9b0502c81e45b8697a9156ca. 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/QM6P42458546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ccd3ca3f3b009104f4db571a163f4e34d416d7387dc7519fb873cf32041c02. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEQ2426884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf953d049412ac6d8c81c65ede23164965dfeec01fd869fab1f47ef06c8fd45a4. 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/QZMEQ2426885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bc77642cd423d8ce5d984f0c01e5b17bfe7e0b1fb863922c5678d9d915e1bb. 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/QZMEN2446631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1a96d662cfccc1ec55ade7257687d4ab75f15c50d480b8a6a149f5078785d. 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/QZK6Q2413559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad05aa32dd7a89c9689fa6f701d27bd75be13f0c9ca7bd6ebc66a65f3e5fc84. 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/QZES82410562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb98f0562911aed35dc8138527977fc1c05a2f1c387b3a87b8e179ddd972e30. 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/QZJRC2036632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdef2c1e09573e11ced261b96d792b4d28078b2b5bc7fa51db9ef7458e52b2c. 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/QM4TW2435335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9b38facb29f177cb2241e4dc2c0ebb6e639c3b18a18eb29a4e68918466df8. 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/QZWFP2380213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f84b92f2c47a52ddca3361ff304ce919cf1f34c110a41ef5fab7f26c32deec. 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/GBLV62301927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eb29c553420885459d79d4c483c696a37060ce6d379b97451947349cba68cb. 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/QZWFG2314778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447c201b4b9bdbd7a6d45330ee91454ccb9bfa25f57bd1c79dd4f2c10ce0f160. 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/QZTAU2354717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b063837e97edb643feacbcf53f5e45f2d615788ede2831be873f2750c5cdff. 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/GBLV62308910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07bf6b38309805af3e35362751fd5cdafc4f2f01be41ea2ff507772803e33fc. 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/GBKQU2388520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378354b4e9380284a4cc8a8db5d8826650ce3003d0f3690ec2d6ea1fef3475c7. 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/QMFMF2322381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef8fd339e75909523ae53a0944a4550d80e0608f3708c13ec9e939a2c377166. 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/QZRP42316271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffad00bd1d4a79952a45b1c3e1c5da92201e88e30f31eff0e63bd3849c6a61f2. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CA5KR2380466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca3f8a238c11e5b99d7334da51d14c7773983eae199f88c7daea6068b07a1b. 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/QM3DF2251752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9a19b0a3be4a6077095b23342a5e434170ce26aac4cad6563ab446929c5096. 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/QMBZ92394889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5dc97399fed17d184f282ee0ad50a599957185b3659bc80e6f3581b3948361. 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/QM6N22333389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5a5db6f51244e40ff2a00d7a124e7eb448b4d4c2b9933502bb6360a3450c83. 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/QM6P42388951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255af0702edd2ef3c944dd9fc326c5f5e91f418d5bbffc0a2aba776867faf7cc. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZES82353747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be49104c49c65c37bd28bf0d18e747da3c645597267ee1193e5d39b62b2c66b. 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/QZNWU2332758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba86511822cea79c46ea08e3b02de89de77d298f8868f641305bf5757dee9b82. 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/QZMEN2329390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666578d486c05b5d0caacee97fc1d4e5aa2666ad37f7c96361c0c671597f9c2e. 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/QZTAT2371054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ad129ec2f04d85e6521ccad35f763765700c61e5b7a4004011f9d8431ca83. 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/QZTAT2371055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61461d5ea53e18419b865eb53c23e65b43495b9f1e1494905045b7377b551579. 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/QZTAT2371056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b6f60d7d372170338f07ebc0b0d6784462b4bac485a278b1708fe045bde6e2. 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/QZTAT2371057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25d8c9891f1fcc91cd33fad90c6a1b2fb583380c9a4cf1e20086fa8f31b682. 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/QZMEN2331544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a544a99f642ad4945226c00ff52ba6acd6ee41850c7b06e070c584ade60eb. 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/QZHNB2320761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8527313fe7d3677d371b6a5111e54e5786b4ec7cf678f1f50d8c90a45262695a. 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/QZK6J2304078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56edf126ed954d3627c06f6968cc54f75dcdd498135416a46522cb26e580b0c8. 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/QZKDK2385086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076376dace67495ddd9c8bc02abe4a9f4d957ac23fe348a82e471e18f56a9bd5. 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/QZTH92312393.