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 0xc5a43eb032d916030d273dab9570993ad3114e177bcd4592c8af7a108d0c4263. 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/21fee545-f5db-4840-a45f-3bd585153dab.json and https://artists.proofprofile.net/proofs/artist/21fee545-f5db-4840-a45f-3bd585153dab.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 0x6a73b13ce780354ac5f11295d16b75d7c3d46744f6a11bedb13a96c0dbd1daec. 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/DEA810800679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb036447a6ed9de37ca995167b986a72383ad058058a440f200af85ecc212728b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEA810800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9bd49e392256811f3091de8b66363ab5b921adb6f472a6f0337e32f8e01a8c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:23:50Z), 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/DEA810800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e679cd6b9fac6257cf15d03a8196c51d41423c2fc59767adde192fabfd33d7. 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/DEA810800684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ba5a73d20e50ec9663f64795e304039195cd687047a9135a596181270cf1a5. 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/DEA810800685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19598e5f940f3a6b57abb1fa14022ef9ff9914e7b5570c336ede482be9fc90ae. 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/DEA810800689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90798f53220b1a79d3971733c61f3adbc702b5ab3b2c91b94a4719ca54133bcc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEA810800692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0295d7397ec9c969019466050abc000f5f5260fb3e39e81dc3dee83f8c6593. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEA810900965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64950d8d1b356964dd9b5e4c61a6fd9ecdfa2fdb91a653bea3e62b597fef03c3. 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/DEA810900974.
Haberfeldtreiber (Troglauer Buam Party Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca93a41527b53e12e5dd7fc17f599f45d1d51a9a0891b4cbe78bfb9bf8966dfc. 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/DEA811200497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9d2f2750cd3af515934937ac51460b6c91c66a1356678de304463863a10f08. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:40:23Z), 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/DEA811200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acba5557bcf422cea98297f9b1db86ca219aad94320f102d082a7de738dd0bc. 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/DEA811200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e22fb159a4e0889d76a353a3282fe292b571ce99ed0101e31cfffd4f147e54. 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/DEQS91400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0b1fde38ca99b795fd041cd04b0f7d539deb5242afe3bfac3c47a44cfe3c19. 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/DEQS91301146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dca50fef5e36d0eeb515e9d4be4b3501f9a992665444273ac409df408bee081. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEQS91600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0800a5fb4fae2ae1554f34a10c772753000c31e62c54cb67d1dc813c3bb30e1. 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/DEQS91600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa906819e1e167166c46f03086706c049a07cb78bed1384449df4fcbcac0e1e11. 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/DEQS91600254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853acee8245a5f0810c0d7b29953778fa7c1a8e3849e38c86a5a0df773053a46. 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/DEQS91600258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0800a5fb4fae2ae1554f34a10c772753000c31e62c54cb67d1dc813c3bb30e1. 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/DEQS91600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe929ee4dd55b629f519853707b898a90c40734549e48ecaa60464579e58e8bd7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZ901801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2bc0f41ed2d9324057f82363231204ecb807c10279322577b4904c3acd6ad4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEZ901801241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e74757a7982c072202e83de954ccd8e6a4eb0e2c1a65d61adf8234f6b1eb5b9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:05Z), 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/DEZ901801246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443031c92e330c2a15ae26d1480c57ec14b7113d3539e7ced26fbafbfd50392e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZ901801248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc949a2a47d0a0d75b6dc8ba12cb73fca42268f95a4edfabf1ce8ac721630071a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZ902000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1d5efa825358d5ceb16410487e7588a93067cf5c0fb7f4930191657675a93e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEZ902200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8671f02e23b9facdcab7f8a8193a18a825ec8215957d9fd2c54383158b682dd3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEZ902200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e7b7807f64eeeafc5fc7c1749db2fd0d70f4c7d595fa5a71d2cfd9c85d857e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZ902200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1d5efa825358d5ceb16410487e7588a93067cf5c0fb7f4930191657675a93e. 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/DEZ902200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6e5e32cbefa8435320e22fc1492b47a90cac875542047164ba8e63058d05bf. 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/DEZ902200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659d54025e4c2cafffa9f542085fe63f9ddfd25c0b23a596db3c2c5098ffe337. 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/DEZ902300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410ce3ec96d0c3bee82a777667a37a365f0d9807b85d5eb1af45643287d28f2b. 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/DEEP82300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8133888c2ab024662ddc015106e2ce8f84a22bc5bae72cd972f9139b6bdc50f5. 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/DEEP82300111.
Haberfeldtreiber (Habe & Dere Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1722cf06dd7692fa9acefe1f256338b70fc1e82c5208667fb3395463db0f3687. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEEP82400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206b5e8559549072e233c1614b724d52930b2b892569b9e11071b01205b8e21. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEEP82400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4fa51d6025a287b10f27afba929c76fa6e1e59ffb283e1d952bc438a2f881. 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/DEUM72207023.