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 0x33e2f3dde38c85d89873d04bea821e5123f29608bda31c0a6348f6bbc5d62b88. 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/3a5482d3-9625-4d5b-ac76-589d5cbd50a1.json and https://artists.proofprofile.net/proofs/artist/3a5482d3-9625-4d5b-ac76-589d5cbd50a1.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 0x72bdb14688d8bee2e6d26e468dc6d25be85984fa5b3e3576604856c1163e882f. 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/JPS801952549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4644718848f37b3d41d3929fedc7e769d97ebd969139a7777c1e69caf39a66ba. 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/JPS801952550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70376f66fcd13b1a81fccec02ee8ef84dd660aef8efc8131123572b267bd88e9. 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/JPS801952556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fb02f8d8a9b329827435f6f8cf6337e5df43b6e8b126dd4af2f30aef9ac150. 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/JPS801952557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5cf9ec84c78253bad900d0053071f563f3c8dbdbac668fd489072955e699fb. 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/JPS801851977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13ec3c880ff7814a055443d29847b8e89d30e7acbcabcdfe3fcbb355d1c962. 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/JPS801851975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd48c0dafbc29c608e31c3a5a88754d52dd92b485dfb4dd2721cfe8f4c0cc8. 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/JPS801852710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f605810d6b39f7f3250a186bbeb0feead29013373272d4be82a726eda4274c. 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/JPS801853599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7c1de6c5a1af7b6f51f6d8c4b352258df7f4a55598082c014822d7baf5ade8. 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/JPS801853600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b4774e6c56fe8dc61af73167093c45698f646078c0bb39caa13d1fb6bb3aaa. 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/JPS801853601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d1f4591e1f7098a0b9c59303ff156de5edb3f247e9a45a769f72f14eaf5cf. 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/JPS801836701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8c9886b0189a0b7b6eb1227de09126c3e7832d6ec56b0a8100991d3929cf1d. 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/JPS801836702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c4ba8b8f2b2b4ddf80bd716005706bfdbd71d72a5a6bcb9378cb873ffd0a6. 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/JPS801836703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7899d664c32f0aaad78f41ccb98c02241a5099edd3c1f23d183a75037acf27e4. 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/JPS801836704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0472d81e6f524e56a039a160ea190ab364cab5c30029305f0d1a2dc0c5eb01. 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/JPS801836705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50494be05494e7360ee53aece11b8bb857838e5dc1a1acb9d188f655b21a58b. 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/JPS801836708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a721b597e3c05c516b5aea8003572df16a7b576c73db37f7b0a4086277ec1. 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/JP92N2355819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb156d7a8c74c59bca1f77792ffa6278ac0329afdccaf026cdb0aef5f857317d0. 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/JPS801952283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055515f0b5f14e9cd2bfea8067891ba85ca960bdfd0d7b58c0c0708e3664f60a. 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/JPS801951665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eb568a75cca3fe3b8acb2b250bd9d37505307ba8bcef89b91c7d73ead71d91. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPS801945584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd48c0dafbc29c608e31c3a5a88754d52dd92b485dfb4dd2721cfe8f4c0cc8. 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/JPS801852710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c83083edb0b50134796fd3f019102c5d4b9a5bfd5fdb7dfcad3e34a43da9d8. 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/JPS801852713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13ec3c880ff7814a055443d29847b8e89d30e7acbcabcdfe3fcbb355d1c962. 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/JPS801851975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5cf9ec84c78253bad900d0053071f563f3c8dbdbac668fd489072955e699fb. 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/JPS801851977.