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 0x35bb14f73fafcb8dd4f6a79c86583caf5337042e13449336c67b84f3b4e74d44. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6563e8eb-a2e7-4c31-8ad9-98275c7e0912.json and https://artists.proofprofile.net/proofs/artist/6563e8eb-a2e7-4c31-8ad9-98275c7e0912.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 0xfb51ba44216e86b7a37a558aeeee05ac6fbbbe90b9d259a7f5a694a834e6a5a5. 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/DEQ121536062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3c604305ad3f1e5dc2c1bc4daf93b4c3d68ac16759041ac516e017934cb872. 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/DEQ121536066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3bd2efefcd081c11a9c7dc6c60dbea478623f3fe4cd98068b09f3d8d6c9f92. 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/DEQ121536068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984be08d471b3ad2a35cdc03920a47bed768519fa1a866440b569d4397c740d2. 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/DEQ121536069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56961eaa0052d3aa4be40cd566ce23dadd660e6068b3c68b4bc2483f8d42e8. 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/DEQ121536411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044634abd93094101dcc5b8fef99dda74d2cff1b394dbe57adedd0dfa1a568ed. 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/DEQ121536395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93ebaa10c38c3a9744992f8f24c5d900534dd4e086b4024e0f6a12eaa153c6. 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/DEQ121536396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3afd365e9a6aa442601108c4bb9f0b2a1d8ea088e5729d289756aed360f55c. 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/DEQ121536397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221923f68ad04fadf6d7d36f7225a4ddae801abac3335328f8feb21eee054ff4. 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/DEQ121536399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee6dce960e3dffbcb64faa1364b915357247befb98d57b893e0deec7fd79081. 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/DEQ121536400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061e3c205c86f239fdfd8625e16fb7adde6df33d75da4c4fc23955ecb03894c. 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/DEQ121536402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb00c9ca2c81a70ac45c7447024b375be2f2f9b8d35f9d6131ac441d8a41fb37. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEQ121536403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712e52bfdbc39af3bd0fceab09ffe684413f0f99d5139a7af58675ed148b88b1. 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/DEQ121536407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d89a80aebf4d41c91d1a8340b7b651441b81097ea63ec0336a9f43d16c9af8. 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/DEQ121536409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a30bd6d39495f71cf53eed04c9fa2185674e960b3a153ceea03f7ebc263a89. 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/DEQ121536410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6ad58f53bd306bd7f5cea58a632d4bccdde3143b764811545776f6541d748e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA072321501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac0b21f12e4db40978efd85b4e8e97326db171b51e357bdd2a00eb3298f1d23. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEQ022391411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ed61868112393797746d69e3db9011315310ded4b4c94e3dc50c22a4f4c543. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:21Z), 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/FR10S2446942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcbb8a69cc01f7409ccb0f68a783d495d0936a4418c47a548563d32b99b0636. 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/FR10S2446943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa957f5a665a7f6342f961bb701a42e7fb9e01075131f1fff1ca6e3c8ca060b05. 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/FR10S2446944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528976bcc1fcbdcd5bfead5768ca8b45508b3472550ace96b9f05a835f40cbb1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S2446945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6ad58f53bd306bd7f5cea58a632d4bccdde3143b764811545776f6541d748e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA072321501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7af6b9a1a4a52e5eb09e1b6b04b1a32cd61c7a10cf4740dceed5da21c54a15. 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/FR10S2446946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d530be19d1a8d54e20b01da3018d0f6e72e8b1e030b9d21c6ac2c861b3f122. 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/DEQ022391991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5650c95067b38d873a6b242bae981c840cc0b24b628396149cd2ba87a7833abb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:35Z), 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/DGA092372149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccb55f00842e5642b0e0756258bb1c31462ef1af04a826c64ee21cb8fb936cb. 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/DEYW82419386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f10127ed674cbdf636c11f0e22d4ab6032929fc80ce32dab71ef1cb9976b040. 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/DEYW82500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1017683e712c3fbb9c7c1b48d5fa483649ab6f84f26a5b13143dfa680652c91. 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/DEQ121639972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53f2e2ce57ee77a05dc3cae5720c36509977a9ffe1c9385cb61bb57fbb1e60f. 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/DEQ121639978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbf29da7fd90f784a79399342dcd82c98614c7142970a409b5005e807c1e2d0. 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/DEQ121753140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6cda09405aae14f7eb6bfca484c2469c41ba4641e9c007e51d1480d86cdde6. 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/DEZ651368028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3554b7b010c5896f294575d75085e89b963f83eff4df23d01dfc292925b80d4. 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/ESA011691579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231ff6eec7a518e384745d93db31963b660c46397fdb9c4328bbfe53c17a4f1. 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/DEQ121641532.