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 0x9ade5d4b66c7f3ab7ac4b7904185202c62af7e1b26148bb5f8cebec3af809a8c. 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/0bdd5692-6d2a-4d1b-8c5d-f59f8f062298.json and https://artists.proofprofile.net/proofs/artist/0bdd5692-6d2a-4d1b-8c5d-f59f8f062298.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 0x36e432864f34d4fb7969dd66551ad1e63f0463f05b791858909ddc07885c40c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3X51428701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dca11200eeeaa1f57eb1b306a8ca38a77cf92b6dee1301ada5d242ac6a8d61. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3X51429101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726282de3afc85fdcd9d5ca8f725b252983ec9772b75964543eed1d3ddf858c2. 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/US3X51429102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d46504213fda2457b24922321745ac6eab22c8c50e767465e82207f75325d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3X51429104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f09d41866f6fef7596fdaccc21b462ae5ddc7ae5b15fdfd12e1d9727e5cdb5. 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/US3X51429109.
A Reintroduction: The Essence of All That Surrounds Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa9d74d5ca9cac06ec8569a2f19871f15502a6272398e7e8a6e8732558eb3f2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:38Z), 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/ITH711600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34441ab1f1acab7c62e18208c310d02ee9f4668f557563565b62f8ecc1ad93e8. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/US3X51634201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dc9040424f1b25d11f06892c3af8913290b3395a76e51eb1ee7cde8eaf480c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3X51634203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeaa1175f349befa9cf0175cf40230e44337801f226e8c29d7e8dd608441a23. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6MZ1870439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912bdd7d6df0b3e7dd4dd48223eeb6cf527453833385dbbf40ffdd8711c6dc76. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:23Z), 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/QZNWU2232564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88ba462ac74457f94b6db8ad75dff91cf1cd558522195df5e90223b48335c06. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:39Z), 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/QZFZ32364073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb102fc9850241f74c878305d18c5513b20e5e7e80a78b768452eb19ed3c3f2f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7R2427705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2220e09d860849f12c6c1cd2fbfc2d6a874ac4227160b625ae1dfa5eacba9058. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFW2533342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb102fc9850241f74c878305d18c5513b20e5e7e80a78b768452eb19ed3c3f2f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7R2427705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1007632215287acee9b6f2a15dd97ef57beba1216873658c3f59966df30050ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US5261722638.