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 0x2aad8e28c8a2a0563fb276c683a093862076065fd0316cec9511fe67aaeb9471. 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/021c06db-657d-4069-a971-1238d16f41d8.json and https://artists.proofprofile.net/proofs/artist/021c06db-657d-4069-a971-1238d16f41d8.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 0x1c8bf479b9b6fffc2950cbf111bb54959d0075a81ff918e98083c66fd3863e71. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN92312021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3263ceb7a16e21b8dac853a0f64aedb2cce25e1b1ab662d3eb210ce51bb6f5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFZ32373696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a3c825c450125808772c961a0367475f89c933826598f7a589273c5c9bfb75. 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/CACWV2491783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81e2999c701a4a9336a8e9634a2044aea0c12d11b733e951eabd1f8c1f45aec. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZRP42220050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693c87319c93beb50f5fda2db7aed3d8d17c932aa5a73d3f7d86d2762321874f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:20Z), 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/QZHN92314980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871e48c075cb7fe41be4d5d55ee26fe34a221eb18509117bec228108f50b233f. 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/QZK6H2323935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fead551598e501a4b2ef05b35e614ac474fab839f6d134801ae9565691dfc4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTAS2234189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b05e75051036e518d9e1a338be8a5eab734e0b55db7d04eb1ac857bc197103. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:53:39Z), 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/QZRP42220043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ed75135fe8be43776994ac133dd855ca64a9d8ec2967d51c6cda9d48f3798c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:46Z), 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/CBEYJ2460776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0488a9e808a94eae470628563376fb011ffb2fd59d14d08b1cd2fd76de617b44. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:10:31Z), 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/QZK6H2324373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c84f3662cdb6a54934e380732280f3378a517ccf1303cbc1b9f6737c10d6b0a. 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/QZPLS2287939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82ab227621e8a6c7eb5416787a02ffafa09e584b22eb4a120a02aa6cd70b37f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZRP42220048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaf77064523b22b72ae049d321abb36ef800a57aa313cd4bd1907e08f47def9. 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/QZRP42220044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81e2999c701a4a9336a8e9634a2044aea0c12d11b733e951eabd1f8c1f45aec. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP42220050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7078a2c56480fb1f9393253943ebeeaf9688b3d6eb6f25be123c4f91952fee. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZRP52271959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646edab8a1163f3a583d6b6c2a986cb0845b96f6b1182619a9d9b79c1f2a8edb. 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/QZTAX2296729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08de892d952bfc9a60d18955c2d2431b961ca0f6af5de6694e80e2a5828269bf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CACWV2491762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f2de8f67e36fbbdb3d76c18abe9d030c69aba5bc54cbcadeddb448f2c4eb0f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6H2324377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd88e70b919762be45b2b4519be6d1a6280d9e37c06da24e04b37228b0c399. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAY2235812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c5ccd6404c41fa1d3f19c42bfdae570396d9c40b34ee72d3d9c88744c9abc. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/CBF8B2447422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7faddd924ac95c4fa0be6e5f274e174de43d97568483ba9a478e0ad7e68f11. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CBF8B2464915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc583b3deb97483607513b0be5d9570e33c93bad0dee9752e6aebb6af45fcf2. 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/CBF8B2473461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48fcda36d3e6329715d9995d1e41493917df881ded495c896541108ce9318a6. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/CBF8B2479985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d6d1aed858bd5d91426428069a5e420c8886ec3240c5f12b47f0c5d495e9da. 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/CAHQJ2547171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad33a37e725d06bdcf74a93cd027e61a9a455870d20efdfd5ea8668f64f1458. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CAHQJ2571930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7908f7863e7ece31096f583aca769c4ea60f959aabbc480514f6b188a0d16dca. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/CAHQJ2589839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d55d638a929f46ae552abc816abeeeb42cc5067230f12e14ad7792b5f92a933. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/CACWV2521591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ccdf01ce0fdfa2a2942fc613cd513529616bdfd91cc3f168ad45e46345e5a1. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CACWV2557796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140212b8c5d44e3f60a2ce6a1967788f036145eccf20f50eb46a8323be4d7839. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CACWV2573039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a363ea3a6257dd005efb4e538946cdfab68ba5f77fe8d1dc0e3acfe51925b45. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAENV2481730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d9bdb62bf03435ecd1ef74107ffc1ae2e263016e827f62ce61cfa38be96699. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/CBEYJ2421151.