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 0x13f4bef43031158481403e75601e5cf9d7ce55d3e578375b8c1cb1053cd88088. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3f1e972-4dc2-45c3-9430-32eb1b2fe85b.json and https://artists.proofprofile.net/proofs/artist/d3f1e972-4dc2-45c3-9430-32eb1b2fe85b.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 0xec02c57a5903f15444806e8dc4bc7d38615482d03824b08ba12461b0197a40b9. 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/IT29Q1500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0fce240183d5d81d5f7569c765ab8adefd97f3cf5bcb58bc2dd53330e6537f. 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/IT29Q1500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7ae75699ac6986df915b83a604a2c649b0985a6992fc8c505c479d43227bb9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/IT29Q1500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe377a24010e7c5f0a978b9e22ad6181792b9544888dffe37fdd1f6bb720b0b61. 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/IT29Q1500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4885366d596f577aff6045f9222d2b4232d6901f70b60a48e57cb23ada6c5a. 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/IT29Q1500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc2475b216720f725fb0d71e623721cef2d7deb715988696cb81d816dde0883. 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/ITB002000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4c2dbb64e74f21ba1b13582784a01cb12745816b5a939ac405dee522e6ed9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITB002000334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3234c140816f4edc3cac761b6320624fb903d4345ae0a130ab9256853b7fce5. 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/ITB002000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20930b2b13b464901ccc3c900188f1ca4300afc4fa4cb053788f18c7ad5f313d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:24:23Z), 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/ITB002000335.
La violenza della luce (feat. Brunori Sas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681ec8c42d98b8b3f26dca82898e1037767a7dbd41ce6cd74b014a49f8fac428. 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/ITB002100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb658727096ab773ffc0eba9ebfb4a48591e6e2e5a8b421c926358ac752ce27d7. 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/ITK192300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5269ac2094154901814fb87be149252ebece59ce35d230c71ed659fc18f6ba. 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/ITK192300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57593573412e88767eecce0d02725053843fe22b90748f0c842b0860cc08b0f2. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:58:30Z), 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/ITK192300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20d31a1718465e348f17eb6f4e2ea1bfb016d0e254a87a8a28595816da86398. 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/ITK192400285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7bef94d8b8c0fc51f2b41ef86245fb6f2926a6e2e9bd58362e8db22130c5c8. 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/ITK192500175.