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 0x12884b14e7eb1d08d7ce2ce733564696fb864dd9036099bbc5fa513f84a235cb. 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/6bfda55a-7bcb-43ee-a4ed-8a58679565e0.json and https://artists.proofprofile.net/proofs/artist/6bfda55a-7bcb-43ee-a4ed-8a58679565e0.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 0x3bce46723169b100a64911f1c89f9a1d84e4113086d500b11ea909461976d3b4. 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/USUM72313029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27595e7b2dbf12606a48d11def8b633fb97f333ea548e0aab53f206b6f86d18d. 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/CYA112400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca219c9538c93e7ae485a8c96f3267675d4ac4988f4ce2f3aea0325b1c6201. 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/USSM12303875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8bba17335d096db12a8ba17088edf63a7bca5aa6e5bd557f0e6ff44130b782. 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/USSM12303926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20489fdfe218d2e3abdf5d53e0b932833752731a7fdaf9d54136a923145b701. 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/USSM12303876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14f0d0d89dbcad732d01e86b5b6912dbb37dbbc03195c911f96f48c1454ba58. 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/USSM12209934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c448a5d10fb3f7d4b5bf4d62bb977bf696abf90d2b6955e734543dfae121fb. 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/USSM12303880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a3a499749288f2676cc4b0e82c06817227624c2963f36d907c064658190388. 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/USSM12303874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0314100f8523007e884b581fa9b6e9c00342534c85bd43065430dfce88d67ab. 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/USSM12303878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7363876919d168ff334b53db365bdeb77f40ed34fb4bf372d7d038f5215c807d. 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/USSM12303927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9312b76e997fd3f315e89356e2568f28b2d9d3e36a4c01071559583c786c0b82. 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/USSM12303872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e5e4eae709f9094f2cd5bc8d7d2bdc5010fdd1c0699ba057e8d394a2f25736. 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/USSM12303877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c93026c9744c2c2bc149f4af9159273ce41738aafdc18ab71bfafcf3d5bf1b. 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/USSM12303879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2878f7ecf94c745ca0c1f19c180af7cdacca2aec7737c0de7e33de1be60146db. 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/USSM12303928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf861d2c8b968c4b797a1348ae8820ad835e347c1517fa5675a65e28bdec4107. 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/USSM12303929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c448a5d10fb3f7d4b5bf4d62bb977bf696abf90d2b6955e734543dfae121fb. 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/USSM12303880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2878f7ecf94c745ca0c1f19c180af7cdacca2aec7737c0de7e33de1be60146db. 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/USSM12303928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c448a5d10fb3f7d4b5bf4d62bb977bf696abf90d2b6955e734543dfae121fb. 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/USSM12303880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20489fdfe218d2e3abdf5d53e0b932833752731a7fdaf9d54136a923145b701. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:11:21Z), 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/USSM12303876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c93026c9744c2c2bc149f4af9159273ce41738aafdc18ab71bfafcf3d5bf1b. 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/USSM12303879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e5e4eae709f9094f2cd5bc8d7d2bdc5010fdd1c0699ba057e8d394a2f25736. 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/USSM12303877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c93026c9744c2c2bc149f4af9159273ce41738aafdc18ab71bfafcf3d5bf1b. 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/USSM12303879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9312b76e997fd3f315e89356e2568f28b2d9d3e36a4c01071559583c786c0b82. 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/USSM12303872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14f0d0d89dbcad732d01e86b5b6912dbb37dbbc03195c911f96f48c1454ba58. 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/USSM12209934.