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 0x05924894cc03714d9aee102be74941d67caddb42b695a78aa3011d62acb58dc8. 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/5197d1f9-4269-4466-a4b0-ecbd8ab1cbe6.json and https://artists.proofprofile.net/proofs/artist/5197d1f9-4269-4466-a4b0-ecbd8ab1cbe6.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 0xd67cb66dce9c5b56112084108733a9246707e4028778d1369d5fe2a5864b55a2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:07Z), 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/CAGOO2452787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e19379233c18e6c5e357e08f6eb898826a2c3eba1d6b5ca43433f37f8fd957. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAGOO2454448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d038be3ebcd29fbede45c26f9a57f95c2b3640e9ce574c6d994ab8b7d390e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CAGOO2454452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502f5f82f4ce334f9c1b5b415e8c5fa8de952a4404af090fdc01ff768f6a7a2e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/CAGOO2454454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb87141409081829caf8316fa5fcd75d28185c696ac8d356123b6e7952e186b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CAGOO2454456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32b1f382a3f653cd490f9840ff09ef4e200798ab81b5165c902d131bd30016. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CAGOO2454467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396a84bc59a47027702584099e92d6e98adf63e9370a38276b87fe79e1363239. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CAGOO2454469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced7baa4f8fa3a709de052ceb840cb79c552b05e8a26447e4bb476f73d1d562. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/CAGOO2454473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbb194c11afef4a5d132916c36ebd8480f308fabcecf5520ece16589b4d12c3. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/CAGOO2454476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac56cf73d97040878a7434bde97a985aeeb45cff48444b86d2b557bb217b72. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:57Z), 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/CAGOO2454606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b70f30eed1fc643e04c58763fca3b22f82df6a0ea4ad6900d79bcb172c710f7. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/CAGOO2479806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fce32caa01d23a199122327d89ddbbe9b8ac13d05c8cd4cd86595ef63f2d58c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/CAGOO2479808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68107cab5e8fcba2960bc7673c6ef2aa54bd94f954d5c41e4c59537ab5fbd44. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAGOO2479812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da98e277baaf2314fdd49794da2d79544276a2e073632cf00c9c971dc2f579. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CAGOO2479813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49072093b400da8dd8c60fcc009b04053f73b26af9f708ef38c3395c1eb8b2b7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAGOO2479816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a8ebec5de81fe67c8513110aa8232c17f3ac2442a144ef6b4220830b5080a5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAGOO2479818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6810bde0215fd171ebcb14542712069f86b391116288e38771c8c35cb567d925. 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/CAGOO2479822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fb71c30bf6b59ff3e4aa1ffd8260e816670e7671245362d65021cdf7cd769a. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/CAGOO2479831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc8e3a1ee45e35cbc23827d12115cc52b02d0db0f386080ecfbdf3fe125e250. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CBF8B2430481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a62b911688df411e8fef7ee76cf25fac250cc100894077844437fc1a10319d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CBF8B2430497.