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 0x9db9f9db030dacad09c060da4104f56543d50f3b10c334e4ca91a1ba917732e0. 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/4386fa02-23d4-4232-8764-bbdf6ed9f818.json and https://artists.proofprofile.net/proofs/artist/4386fa02-23d4-4232-8764-bbdf6ed9f818.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 0xf26cc4e33935ce88b161a9767476370eb4fc17469b2e5f5e24d8df01d6b19f4c. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:30:35Z), 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/QM6N21808659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c94a383d19718ad845a382917ee443cf45615fa48e39e56088480e59f2bbfd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N21808660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8267cda4f78a0ff266cef2dc378e75e3ea40314f2839e6688cdcc0e06048c0. 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/QM6N21808663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267318459b2cccbd8a0c685cca12557bf8f0ed0ad4045e6c5a6eeb618b6a7d6d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM6N21808664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334e5d5afd698f21cff125c4cbba453f7c4ad004d08e3f48f60284c97541d1fa. 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/QM6N21808665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c468bd1941fad60872f820ad1878a89324ba49d2846424ab789081903ef279. 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/QM6N21808668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26cc4e33935ce88b161a9767476370eb4fc17469b2e5f5e24d8df01d6b19f4c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:07:50Z), 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/QM6N21808659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c94a383d19718ad845a382917ee443cf45615fa48e39e56088480e59f2bbfd. 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/QM6N21808660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8267cda4f78a0ff266cef2dc378e75e3ea40314f2839e6688cdcc0e06048c0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6N21808663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334e5d5afd698f21cff125c4cbba453f7c4ad004d08e3f48f60284c97541d1fa. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6N21808665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51190a878d681d405dceacc58db2ff1cb7dfe2feede934f9157b4e3f70bde681. 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/QM6N21808667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c468bd1941fad60872f820ad1878a89324ba49d2846424ab789081903ef279. 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/QM6N21808668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8550db8d43f8488e142cb3831ee3588cbd1a8a90a32348580593456ccf4b6423. 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/QMFME1938555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dfbfc87bb0979b97a51767b80650dd395153368d1441f94d361e8dc6356434. 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/QMFME1938557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54058e9c347baa8f5362d72439c5787e5dea0310a5697e79bd0abd70a69c5d45. 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/QMFME1938558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79945183bba91689f33634afb7d90f37e857c1609277f5f8d99586647b7ab76c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFME1938559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed203c5a1a6d87da553f35444e9b8af0633a3ebae7d5746e19c458ea954917. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:08Z), 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/QMFME1938561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a9dfe30f3c775101118f860a6e1b8c83b3db9cc4b1a0de867166c99c4bdee4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF2134140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f68b5c26f147e144ee07a7426c45c76e0af87329ce8c4ef40513814e1c7942. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMFMF2134141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38126f52219bb1843e55d4fee2b4a5b236ee1901db6080b70cb39299dffad70. 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/QMFMF2134145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123b135d4eb7f9d0213f39a4912940d14e1e31cd141c340a79480f80261eabf3. 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/QMFMF2134147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c22c6c62eedca85732aebc635553b09d2580c45b333370b50471e52e961d7e. 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/QMFMF2134146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a9dfe30f3c775101118f860a6e1b8c83b3db9cc4b1a0de867166c99c4bdee4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:44:06Z), 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/QMFMF2134140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f1e5b6a3ddecd9ee63e23c936d74ccd7338be178b0da326e12d3b453d87b96. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QMFMF2134143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38126f52219bb1843e55d4fee2b4a5b236ee1901db6080b70cb39299dffad70. 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/QMFMF2134145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c22c6c62eedca85732aebc635553b09d2580c45b333370b50471e52e961d7e. 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/QMFMF2134146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123b135d4eb7f9d0213f39a4912940d14e1e31cd141c340a79480f80261eabf3. 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/QMFMF2134147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc73ff9af0818964120ce16f3a0b20ea62cfbba408f32b6105daeec23540862b. 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/ES64E2508775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d825b2709fff67e2720fff59601a24ef659142bb3558419e9e1c2439ca55eb. 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/ES64E2508777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51520107e75a187b0113eb7b229ad46551d5c9b95b2ca4dbd3e832e8a028c964. 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/ES64E2474957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5f805fdf7ead45610f7009b91b2857f22f95f2624dc6a4b9c86145d69672ba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES64E2348453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51520107e75a187b0113eb7b229ad46551d5c9b95b2ca4dbd3e832e8a028c964. 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/ES64E2474957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5f805fdf7ead45610f7009b91b2857f22f95f2624dc6a4b9c86145d69672ba. 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/ES64E2348453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc73ff9af0818964120ce16f3a0b20ea62cfbba408f32b6105daeec23540862b. 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/ES64E2508775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561622cb710a38dbfbd25fcbc6d93902ae99fbd9da9cbccbe1aa89f94850154. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ES64E2508778.