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 0x9210ad0c82fc0d5c8dbdd104e9ed818c65ef858e4486ce3f1992bd328cb08f92. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dc4b421-9217-4aa7-93aa-abed19ff6008.json and https://artists.proofprofile.net/proofs/artist/1dc4b421-9217-4aa7-93aa-abed19ff6008.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 0x5ba7d547b5e529e3f4d195002aad14a7d8770313fd1fca0a96894404cd531782. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHNC2324644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7277b96f0186d6097b09d7b2e3633e7a340909058f38509f6d7089d0b4da11ab. 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/QZK6J2317474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c54edd75a8cd40740f52b361debb54830ab4cb01e079cabc168991707c30c15. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:42:31Z), 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/QZMEP2331361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a271f2251effe0aa801b31d9d87e998c538fc0ccddfcb2d0c5267c2016526c. 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/QZNWX2355747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6787991d49a8f2f6ed083f040cf9761c9f998583f3068078b3e692c9bcd731ac. 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/QZDA82427409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6af9de413ab1d71020d839cc0402bc3c56e7c6bee971a28556cfa68f094a8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:32Z), 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/QZES72428681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3fca34a91923f5da95a90addb2213e4eb9958620434f4b070a06a32fc11a0a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZES72428683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75e8c308874a0c87f712a4882fc23395f622e2932a263d84c2c7a4ff9adc9dd. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZES72428684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156087967650b0831860a1cd748314c0df74d4b375530ce3d35624ced4df065c. 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/QZES72428687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f47b9cfe14ded50ed6ad0e960abc16751ecc4cccbdfa00354227ec5be9efe91. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:33Z), 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/QZES72428689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ae76871414fcbfd4509cc192ff074a4b7df7901ed84619bd4cc83410b52ad6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES72428690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8095eb53654f9283cb03428c1d7cc31e70312023bb5955694b6ed1489077ce. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZES72428692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1398ff88356dee4971cbeff263b722742882cf3c59f819ab7f8ae4d2ffc66a. 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/QZNWQ2477922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e61adfe8da6d92b85f9143f63bc3db64e2ec1b91c6085e00be4aec57b58b30d. 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/QZNJZ2473723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c04802f0eb3fdf723c8c6181a2b5e9887d4bd8fe510ff834396a4eaeeacdb7c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZTPX2400791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2845edfbe3773bec28287f87f24225ccf117b67ef9de284392e19482022903fe. 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/QZTPX2400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e22c0272f6325f9070fed4fdf2235e8140c7ee96f3a5f5bdb72762eabfdb1b3. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:50Z), 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/QZTPX2400794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f7241147993f7baaedf13879be7eee6e74dd16d7f37164932e4f92929ac682. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZTPX2400796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e3ffced3c90b432d80851c393c9e5aec39223e8ff58619f27eabaf2c0f34f2. 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/QZTPX2400798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d750570a5a34cd4230ca37b16557c5ff18ef51c98a960123c6f8d89169de5c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:06Z), 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/QZTPX2400799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105c4bf704dccd030ac693657def2cdbe4150813a021eb72913ff659a9db20ab. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTPX2400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba6dcf6f5a1f0021074651cda323a98e5c0c224536e1c16a2c8760c81589e3f. 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/QZTPX2400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b6ec1e2d2f59467bd3a2f1d3789500a81813ecb0eeab90b43cbc99da2ac6a. 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/QZTPX2400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490c0d949c0b51d1d23bea9d6de6bd20e67d626c34fecc19f7501477a98d665e. 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/QZTPX2400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd95fa5ef65b0a88c26ece1d92feda3a2c11a3d9d21286f96ce61ab20527b35. 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/QZTPX2400806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d8095170f02606454482834380512fc41efc74db5e0d457689a83325a5bdad. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZES72428682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14254ddd78ccdad3b9fb0883b4956f7274fffa471d3c86e151c7fd97c331ad. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZES72428691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed6810a81bc39b5a37b268c0fbfc02c28265c6a8c52eb1144afa402132cec14. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/US7VG2545891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188e024cb55541a9949b40382a4ae338c6d59e6e3b2db22d00994a43ed120e1. 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/QZWFJ2325831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb190b937bd9df994d764ab8002928f0a356d8289a6e3a5dade9b060584dbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFJ2325833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75bb4570d05f49f7cff91aa0fa0362dd66ae279e49ac88d6bd571a9297fb106. 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/QZWFJ2325834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb835790a61815f709a67919c2712a946e4e5029d7255f7dc61872a5a2cbecb. 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/QZWFJ2325837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9611b843a2b9143741494d0d329ae93589998ceda641470fdff47dcd7243da51. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFJ2325838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa66966e3333757e91ec743682df725bd32eedf2bf5a0b10d3643e019b4dfd3. 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/QZWFJ2325842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafd43af9f067a44cf68eeeb8c20f90eef3c55e3b4225968a6e8af60bc5f97a1. 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/QZWFJ2325843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed25a83e098b7ac7af843ad79b5208532540b90ae79c78d2e74f81f6c5dfda. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFJ2325846.