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 0x785fb9e0b3f6187e36f56f48c1b7142fc2f0c014fdf1f98ca56523c92c98cb37. 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/d1493eb5-3d35-428f-a012-a8bc4d12ccab.json and https://artists.proofprofile.net/proofs/artist/d1493eb5-3d35-428f-a012-a8bc4d12ccab.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 0x0851889946bd54be1dd8a5ab8fe8b3d158149a3d858fd1112c9fbf7b76bae502. 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/FR33T2056401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf782fe4b522c5ab2f1cd24fda853f5e774f8f8ef01db9e2bb3c01dfa20a3ebf6. 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/FR33T2056402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12928d9f52f773bc9c4436c994795aae8605d8d4ad804c2ccbd939c9729ba093. 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/FR33T2056403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e92687ad5ccbad481276ca4e1db3e8c6551437ff56fb9915d54475dc0921a7. 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/FR33T2056404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ba8da95b88e861ea95e8d6d9bd2934fb2daa827a9f0337a30d2e4818e3679. 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/FR33T2056405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687001de515f5182e434aad1b8526464b2f2eb5e15da7061456d3c948bd30a50. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:00:20Z), 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/FR33T2056406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f19e12685c842574feda462630591087ddc52db23a0c4b1ceb62a55a27337a3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR33T2056407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0340e11e22f812f1e39ced3f6255fc8174d18649d3609ba560bf9c87d1ee73. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR33T2056408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f733e10aef76b70136f7599202e7d4be7ba14576236525739df64ef570c29a7. 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/FR33T2056411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdca64ead8af0f7b4b4363bfd237b1660f02d1529894dbf62f01a1f06398486. 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/SELAA0300706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2cd1af9c069c5f2488c3248d3a04febc7e060c37a111c919edfc4772ba32c3. 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/SELAA0100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5d5a33adf382c64e6334fa7c40b00c3470158c80a867f3434824eeeb33c536. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SELAA0100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506d11f65aab5ead8d058eb7ea04cde4e7e7eb325c41fbd283f1e40cd5f0208a. 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/SEVVF0501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90dc2d3fe68ad4248648a19dae03d783af6ab33f797af4baaf025848e9b5a7b. 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/SEVVF0501205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693b86e8e902ace667bf0b76831a3da5b0b57a414b720778035170eb572c1ae4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEVVF0501206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc261bdd8d291005aa4666cad89afd211adabd39fda8ef5b595e7a757ff614611. 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/SEVVF0501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083dd13d2333617ce7adaecbc5cc7036e7f4c7a72f2d9dd789ec80f57aaa5630. 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/SELAA9700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104e36bba5a4d5b1355c018b8a96728b058c517f7590f36ffede6d18de41ac07. 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/SELAA9500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2951359daa60edf805f39de737853e900312520e44977e083ba8f026071ef7ac. 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/SEUM71300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375e26da3fe835f31a5117fa6965219ef198ebeee60285b3823ade3b29fbd58f. 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/SELAA9500503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ea0f4ea5bac7490952586021dc4dbbd12f8bf2e91d88add64c77e602094bb7. 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/SELAA9500504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcff1ad80b487febb045a42219f14db2c7951bf8b89006f2164edc089f49966. 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/SELAA9500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2334321506d2b72445ff432caef0af38951b2809e5e51fbc9ca9e1d9897cc86a. 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/SELAA9500506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97868a9053d1613cb9862c31c1b13e522ee13e5778531ca2deb136bbd1e58bd7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:34:23Z), 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/SELAA9500507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad514f528f6e6ef6014ae1f99934c835a1bc621f779b8a2fe7ce4272508372ed. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SELAA9500508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161d23cd12fcc4c4bc6483d3a5ce68b5c0f0999788ef01fb0a7e188f5c59e27d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/SELAA9500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ba8da95b88e861ea95e8d6d9bd2934fb2daa827a9f0337a30d2e4818e3679. 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/FR33T2056405.
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