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 0xdb5e4f41f181cec5084f6034a086e1c04497adcacf4bb7e52cd864787c989e6e. 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/d39ef7b4-ce46-4b0e-a10e-faaa46cec8b3.json and https://artists.proofprofile.net/proofs/artist/d39ef7b4-ce46-4b0e-a10e-faaa46cec8b3.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 0x32e176040b1754b070b7280d9b02a2c4e5225047c0fc6602f974e273f5da286e. 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/QZTBC2468659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b2be7e1dd6c77874723593e592e4fb3bf4088e490549b43b1b4e446160333f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:50:13Z), 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/QZWFK2435003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b4b53bb30b5b7bf30706c48b714a6b6fc0eb7babcbfb7ddbe956adb90b47a8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFR2427918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815cc0cb32a3b00c4022540b8a6c3bc3d7f4ea614238ff127d931b88867609a7. 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/QZWFW2463552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e62d80bbb06538112549cb99375ca77d74dcfa9a86cd76c124a9fe2050a5ad7. 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/QZZ7K2419335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3a4aa73d33c860397eb430da767177e4e5bd0c4225f1dc894b14cc0e3b4629. 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/QZZ7V2416591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d87beb81756a761fa23962944c84a96ccfedc9414069977de623e2de391f2d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:25Z), 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/QZZ7X2428915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb462fcdb7ebbc8a5c722b49713960b459c83e531adac33b1720c08515910dcae. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7X2428923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc3f83b3ed3c7a555d249e0aafe4559fc75e3fedbc4ac27cc628569a842542. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZZ7V2416598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef7cb830118cfe8182beeaa8a80b25ecdc687b93a1b1283056c174d4d47b63. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFR2416360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8142460f654f4340fde3a897b01d21db06f3aa6ae19d32c783e149c3e0b967. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:51:29Z), 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/QZFYY2516945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55c42e7d3742728ff39826fffa7428fec1535100eb26e293988fb5e65398115. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:04:45Z), 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/QZFYY2516946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2bc4fd2b013b8de2afdb6589072c72d4c6cc5904d519cbadb1de6084eaa9bc. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZFYY2516947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae062bb5074b007bfca2a1297ebabf0df89db305b7a47d3063f884760f3fd867. 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/QZFYY2516948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e06362671490b98ebb689d67ceb111af354ed26135215e1187c489e56a48d7. 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/QZFZ42506131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cd19fca94a4f706e89d2a4796eb74469b2d5c2df9ac9a7dc3110ab1bc4480e. 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/QZFYX2593903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d2f0fa88f44ee33f68bb2fe2e63b0334d3a317145d1d5b8e4a5874ac05583d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:47Z), 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/QZZ7W2476120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0509f2dcc17b0fe7975770a0871bd6085140c7dbaa0f5d5000db6c76f4c77c26. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:28Z), 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/QZFYY2516967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bf4ec16e0bb957879ca2728fad9ce8a54f5bdf31b4809112a7fa3f5fe7a391. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZDA62515839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b74897d33ddbe2059e1425dd7d2f7ff2defe7508707836522d38f797cc8cbb. 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/QZZ7W2476082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f29a801f000d17c34b9d1b1cbb4c2a496ccae4c0e88dfdbb46bb5b871df0ed5. 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/QZFZ62528701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de335ecac84c2ab36a8f59fbcb9091b48fbcb765caa1e6a6941f8cbbf491f92. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZES72595260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86047ab66cc08a5eff348d6211c6e9c3ea8e8c2cecc59fd235f66ba241bf551. 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/QZES72595394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293b4acbd9c6abb026ba0b734b475b01eb501ce446030bb86915cb6c24a8dc2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:29:42Z), 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/QZMEM2567634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426c8b5800dab61e3ce5284ddb18993acdb94b9bb214e392ec77a5281e11e435. 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/QZMEP2533489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cde241551de0378c8c294dcd181fbf292587e9cd7bad2d9f6d4f1cfe6b8a18b. 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/QZNWU2536941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a552d731222a52509f411cc2aace92f84343fd8fda36638062dd08d75334c4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBC2541533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b26f6b1ad4a72fbfbd89541705dbf3d53bff94768525e100c3f5d608a9b3237. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBD2555243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad4c545dd287c4ed6668c97eb4cac836e8e45686fbfa0f91058398cb7f3bde2. 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/QZTBD2587768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84c74763d3a8f497129dd7093dec9a3426955bf089de05a0e7bfa7a73df1dcd. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:32Z), 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/DEZC62502894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a5b86d156224611fd0fff28c4cb4d3f16427779862943e0ac98a61b5babbca. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:20:11Z), 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/QZWFE2570235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13325f2c4504132248b579130326a5769c5070650ae8012a85f24d06477b85b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFK2539299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4000983f7c46f0ed0f1dbd5af79fe276e1489a484acfb98880fc5e4bed4c0. 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/QZWFV2574181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2bc6b3b6faa5ca8f1ce0a37f1f710b159b741ad4d1076fc7ea5207089909bc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7Q2500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8ac7155058b05cdaf178e98c5fca2d41e354667e96087aed372aca53a346f7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7Q2594704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f874abdc828c707b770a39ab36ce47fd6a03549db90c38489db365a5f38b3d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:53Z), 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/QT3EX2510730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd3be2fd43a93e750faac8c4806e689feef1fdfd33abb0a6b8e3daccca94d0b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7X2572683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102fa7193b093ace4cf9ea0173f9b41b24e793b0652496642668b1f383001a5a. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QT3EZ2572957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd47588019a6f8c35faf2b179368f40999d1711c2d8d4db9a8ba69706f43f503. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:41:37Z), 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/QT3FE2517891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531804b46257108f50abda78b63d55269d5b91cdf13995e12fd2cb49471b7e80. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:10:42Z), 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/QT3FE2513313.
Druckausgleich im Tropen Jungle (Fun Track)