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 0x0d9311f219d3eb26671b8e94fee326c4b70a5391d2e74ad28f9b618a9f8307ec. 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/2bf38af7-4b70-4c38-a7ed-76326812c8da.json and https://artists.proofprofile.net/proofs/artist/2bf38af7-4b70-4c38-a7ed-76326812c8da.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 0x96b6a077c6638d63befc87b6688604f8a5f110ab8fb894c4e41e2a41ac69dec2. 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/FR9W12200885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ed0bbde078f7d3bb79484a421748738ba5311b00ce7a2a6154bcbb88aa858. 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/FR9IX2203900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa558e25538bbec7d177083d4998adfedcaed2866be5aa3d451bc6db7a0f6d06d. 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/FR9IX2203880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc43fc5f3b6bfe04aeb13abbbaebf6d5995ce76774bf36e068aa67040bb0ba. 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/FR9IX2203890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ed0bbde078f7d3bb79484a421748738ba5311b00ce7a2a6154bcbb88aa858. 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/FR9IX2203900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7293d240e55935f7980a5f51e98a03fb42adbc3566a4e6a535198c062e716953. 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/FR9IX2203910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac02bb30e10a3da4fb996dd05320cf5af01b28be1fbeec64f4b641a1aeeb77c. 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/FR9IX2203920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdd8aa980aebb2dbdcf7ef260e453de5c6f3950b20d28daa15c38202a0d884a. 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/FRUM72302470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1c9ab67fdd0cbb0930e40799c60632b4c0f3ad80b3daf8e22a741cf8e272de. 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/FRUM72302467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2812d638063de7f17ddad2e7b9522013e1b809b2e9c507f2d0785fc3bc60334. 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/FRUM72302468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ea5d621d2c506047658d9af017e1c07ae9f4545a8c30231fedf044824b78c6. 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/FRUM72302469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdd8aa980aebb2dbdcf7ef260e453de5c6f3950b20d28daa15c38202a0d884a. 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/FRUM72302470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450e9c82397dd39ac9faacf14e852f087e63c7d22b69385bf9d37ba7a35dc73b. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FRUM72302471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1c9ab67fdd0cbb0930e40799c60632b4c0f3ad80b3daf8e22a741cf8e272de. 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/FRUM72302467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eb6ab4f2c8832feb4e8f5c9377b7cbdc8328371cfc583f2b060eb387fc6ef9. 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/FR9W12321492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79d81fc7224a4bccf446484e432e10a4bfef8c6619e3390ffd1720237cdad0. 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/FR9W12321493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c09fd737892a8abb54b852beb5df80c96f72413da8550d5f799576d9ca5d5f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR9W12321494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ec4073356043d59eff9f4b1fa63bb981001ff22d5eb4977c41c096114638b. 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/FR9W12321496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec960a58f32c0e49d2d10e40dfb8871c84666dc25deb6b03f0ff43e3f3daa09. 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/FR9W12321497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4717adabe51aa231fdf98af1f787267a3e9cd161fbcd6fb1a299a3a6a86d958. 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/FR9W12215578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b8392d6eec0179e6973c200b7c454111b1e9e7a0bc38e48bd5a9e37420a4bc. 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/FR9W12200886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daa69cb289be559d9c8f92d0a565c147e0fe720e02a04035815f6ec0cd00c17. 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/FR9W12200884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b6a077c6638d63befc87b6688604f8a5f110ab8fb894c4e41e2a41ac69dec2. 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/FR9W12200885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b8392d6eec0179e6973c200b7c454111b1e9e7a0bc38e48bd5a9e37420a4bc. 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/FR9W12200886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d58f8d3fe905d3039cf47f00ae76eb19415ad770abc728cb36be7a2a61d021. 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/FR9W12200887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4717adabe51aa231fdf98af1f787267a3e9cd161fbcd6fb1a299a3a6a86d958. 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/FR9W12215578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daa69cb289be559d9c8f92d0a565c147e0fe720e02a04035815f6ec0cd00c17. 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/FR9W12200884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1c9ab67fdd0cbb0930e40799c60632b4c0f3ad80b3daf8e22a741cf8e272de. 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/FRUM72302467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc772443780a8c22e718758c5c9d0aab859f86103e86c00930397e05f67dd78. 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/FRUM72400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2812d638063de7f17ddad2e7b9522013e1b809b2e9c507f2d0785fc3bc60334. 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/FRUM72302468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51821a19582bee29bedfdd68657d23776ad7b20be648968f25345c600f26a0cf. 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/FRUM72400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8787153071ea5f205df458e534bf851a4f63ff1057f23de3cff8381c381b55e. 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/FRUM72400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc070a017bbabaf6fcccb2830bc93db78541fcadb62fddc9948db7366dbdf083f. 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/FRUM72400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450e9c82397dd39ac9faacf14e852f087e63c7d22b69385bf9d37ba7a35dc73b. 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/FRUM72302471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f081802877d91d453b68ad8427fddeadb4194a85f588219da7f5583667f2c1. 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/FRUM72400024.