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 0x3b481f39e5828710057d4655adb4a921238bf8811c4e69475743f3ea68279979. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61549b15-a907-4add-ad0e-9723b4e618d9.json and https://artists.proofprofile.net/proofs/artist/61549b15-a907-4add-ad0e-9723b4e618d9.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 0x6b3b58ab6210c12a5bdc517f5719e7e6435f0db9b24f216757a98a727204e3ea. 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/QZS632250279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a108e3f496787afee75a2d4249b7f02f13c3aa7bbd3ba337f677cbd5e87504f. 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/QZS652258179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629cf0283d402cd691fbde01d05bc70d9ee2eef51b4c7fee2a3b530f1609f1a1. 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/QZS662290783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6762fcbf066f77a39c228d03e90dba2e2e101502cda59618f5f3492a037f0859. 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/QZS632245865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f50432c8784d3c3e4e94a4542da2b5aee921d4f8bea58e0bf34e9046c4bff4. 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/QZS662241139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d76d97721cbcbb29ddd486cc2cc5bdcffab297a6746cca9c316c3a95c6f172. 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/QZF8N2140094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aca669947f69d34d83b9b24d755be0233886083728aba6fc6c88fe08d7a083. 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/QZMHK2036884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365a22e2e4aff5a0bfcca5478fd5d374c6a6c519c4b73f578e2826dbfbe0a1b. 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/USA2P2114968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe380203ffbe1e4f38c03dca720fd0695587a9df999c84797dbcd159ebe44ad1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA2P2114964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e1432092c877e38b6da9f5cffb125d7021d71ef909228bcade0e3c28960b7. 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/USA2P2114963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b31f160beac13f8ddae2722e62e5c24cb8f83db9b027652474f59542f286af6. 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/USA2P2114960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c2ea4eb90b086c5cf2751c59bf601d83546cd1b0b34add8de33c5db85cd687. 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/USA2P2114962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180700d4cc441b9d5925836a986d2b3a21dfa308d5bbe0ae4ce4b748008d1b1e. 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/USA2P2114969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34f9442b070026b3ee2d2ee90ecfda98c9bac733748bbacd9ddc1117fca0a55. 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/USA2P2114965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d733422150f9b760142158d64e2ba322f616993e8aa3165a42a2d20f7503b62. 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/USA2P2114966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5156546d6a40758ccb9440665f626ae25674d22b439a424e4253e686dcaf0d74. 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/QM3DF2127388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e818a39b5c6e6730c091b6b350fd5f2fd8ebe4fdf5c6e4014504663b3598e90. 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/QM3DF2127432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a11c085e817f770b51f6ce6ffdeed3a50270e8057e6540f4cddda643aee0c7. 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/QM3DF2127435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f291a6c4c303574b63fe927addf0add7f9fcaa337e090963b46fd1c29c96f51. 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/QM3DF2127437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2acdd2fcc6bc2a8d5431ba4d92c5db49a0814a6842bfecbe57cf5b166c292a. 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/QM3DF2127441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eb65e3cf53d94da8807a5d0a26d353d7e7ddff58cb5d351c5ab9cd16d1aa2b. 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/QM3DF2127448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee90ba0af1b59bd2f9743a92b7f0cb80d4c222dd77432909c6a396c8f23c53aa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM3DF2127452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bca41d2f1cd0608536d3f021e02aa53622bd0a550d95e3cb74a8620e498162d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM3DF2127455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d2fda1a7ff4b47dd1d17ba53d103dc5f48167de400944ddf9752d3f4b3560b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM3DF2127458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b740ec58ed553d8d595c8458150bb909eaa00b60d39b18534264cc1e2dae856. 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/QM3DF2127462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f32ae457da76fa92c9afaa35030f6423f22a20015c2bb773cc326236c160c7. 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/QM3DF2127463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb73283a36ee19dd36cd722f7d1b932e2ee94ce4b42e7e22664c8e3e1b51e7e8. 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/QZTAZ2376839.