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 0xc6a8f14117c79d29ffee9482920cd799aef5c9da60c4a805be9b953367fbb03f. 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/48097507-7822-48d9-b161-c7a1446cb79c.json and https://artists.proofprofile.net/proofs/artist/48097507-7822-48d9-b161-c7a1446cb79c.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 0xe5ddf3b7589aa0b2529a4ad782fde49fc904a8b22a56e782504aef380957d7ab. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/MX2832026092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acdb9c413cd6260253cd059d07c66ab34246c2bf76495d20d22ee63f1dab521. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2832026093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b797743d26e0a0dc7390e43da12a5d3e62fb10a1c4516fd208c11910e8c3b15. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:47Z), 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/MX2832026094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7520f3a09c856610af2d462f6135200b96adc7d297e5bc2c071604ff0ffa53a0. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/MX2832026095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08515794fba6fdd964dd45dd5d06f3ecd8a3812f88bde061f3c786d21edda4da. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:26Z), 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/MX2832026097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d97b1e930c708b539f400dbbee6617d22384fc69e7facfaac63953ec9136f98. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:18Z), 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/MX2832026098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8e3f67eb4b274b7d12a684ce5ddea8eda3c2e7dfbab8ad6b918d980945c0a9. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/MX2832026104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63380a5e4ad15faa376f06db7d38621ee00dbe1305720355ef6936758a7a8dda. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MX2832026105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe5530f87ba6dd3fbf70fca6bf999f873adc320256a02b04d54970dddcee0c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MX2832026108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815acd7bf2ebbaad0eeccf9e1002e3e103cb0f0dcf6dfcae0eb707577eff869b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MX2832026109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda633e4a7cdad4b6229dec5a36a68b904c50b0daaec9cc30de67fb165df0f579. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MX2832026110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f78d44781f8e9e0af19eed8ed3c8f588fc39f2e65781dd1d99c0451e54e6539. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MX2832026111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c80ee10b725cfb394121f8bf0698c55b8ec054855b591e7971978340ad97c5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MX2832027216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afb2f1940240c90e89f341b1f56e1fccbe48c51fa44ce81fb80470fd1c212b7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/MX2832027219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60ba5fdf8f2f3dfe3ec1fa83be3894e36ed1b7843df9d86ebb23acca2df3fe5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:22:29Z), 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/MX2832027220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7c4d18213f036cab3048bce88ae5056390aa3b1845175812c63f41bfa6dd9f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/MX2832027225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9943e83ee2db403f19d001ea89ff18ee2ad11c4d779e83ef62b3fd77933168bb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MX2832027226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522988bc1856c765833f8880ae9b27e2a346c65fcdd495e061e374d0f9944a4e. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:11:44Z), 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/MX2832261609.