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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd96474ff627d3b85e447d200488243d067b8c19600791c1c8cb6da311caa96. 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/5b7c6058-72bc-49e4-8f00-9841a5e16027.json and https://artists.proofprofile.net/proofs/artist/5b7c6058-72bc-49e4-8f00-9841a5e16027.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc066e73dc7a00e66c0412c5d95a16e60071d0813605190c81a1b4316aec6e08e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEG442090990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b210a3e1945e124892fc1a49021c66dc355e0de228baa6cca4826787d2f9685. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEG442090991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eb70b915ffada0f6e294ddb0f4c88e4d9f7fc24ef4ead8c34e73ea41134629. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/DEG442090994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9f3b7339ba3161d164c2c4f12aceb9f486208df9122088e8987caafd7875a. 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/DEG442091006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d1bc9e8dd4e91843b5c329a22f24c9cce0271287302aba07535f881dbbef6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEG442091007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed1006134736d1b87357de947815e20c261b93554e2fab6aa0e2d754c0065d. 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/DEG442091009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25c87f824f789b21d4ace6a56a9340b7516bdf6c99d53888e61c3243b5e3581. 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/DEG442091010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08996c51cfd6da7018bdfdd5d481197fcef6ac0e740715a93eb88fbda59241c9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEG442091011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592e160fdcf3d617b01ea07d331087399ac7c3b9b38d93e4ac52f6faa4ee2305. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEG442091013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf15bffe138a6f59a33ca3bfec14dca62fd30f677bb42d0943be803c181979e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DEG442091014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75585a14910dfd98efe59578190575a143ed442fd21e1cd3d939826f402d5ac4. 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/DEG442091015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ef8ded16e037e9898d4f654dcb1a5fe790c4505d21fcc9c1e412745208c7a4. 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/DEZC62115357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba08e952b125f496605b7b56bcdc9b471d0d9d010bce9436ecdac1c37d6f3cde. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEG442291131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef4660c15c849dbf5d0d50e291b27c28a70553dc4d659e60e0e71c045aaccae. 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/DEG442291180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75420c0530f480e18cdf897dd338ee9ab9579f9d7b5400858cfb95a1c3dc98b5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEG442291176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328690484ff940e67cc09874765db0df907ca4e7b28f1989c8e8fec6d7be3c0. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEG442291177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632ff5a8402b6535d56b770684d53c68b0af25cd09f481dbce8e74fea9552919. 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/DEZC62345370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60150d49cfce528cc8daa12468f4afb72666fa8899805812fc2812ae318879. 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/DEZC62363614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f4f3631f4c05bcdcf4889e3cfa7d78ea555e167eec2b2da70c04287c31cdb0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/DEZC62372418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379bccf0e1f6e730fc47afcb2e6494ccfe01790c44ffd7e66b0a06e018aba8f7. 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/DEZC62375392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae9cd21c22b8033102492e6bfcb04ec135b2e6bf2d4c56970998c79d060a882. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEZC62375394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474c532d06c85af1bfec3bf5a5a47152784a7d7a5935522ebee5d43068c8656e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEZC62410682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920e11d1ff1a2c20ef0c012b2cc02b397d71a5ff27270fe1ade9b08abad54498. 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/DEZC62438078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcecc0022824b111c899a2caf1cf97d2a545ac36b886f0f3545d79cc6f4332ae. 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/QZTB62494583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cb58a2b62b1c3aac4a59dd59d4902ef5ec3600d1272ba9c84915410bd6cde5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/DEZC62451726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b90e341333263a4e52a63bf4178ca0f1ef542b30008263e12b2993e23a6e6. 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/DEZC62455675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb5bf94d9a0cd98970af51a16f38c5e9b10d956ee1473bc4564a0b4b91f8372. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEZC62460221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3848b40c2872004c49de1fa703f0f4229a65caff2b86d47671c280ef1c3b3e8. 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/DEZC62591246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b1b6af4fe11c1e5475c8b7085beed41415385b388b5bdc453db75b58d8d5b6. 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/DELZ32300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388a9eb63689d77831dd8901c15018d286e6511ed3f2bb34cbdfdbb9b62fdf0b. 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/QZTBA2363495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b1b6af4fe11c1e5475c8b7085beed41415385b388b5bdc453db75b58d8d5b6. 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/DELZ32300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dedf5fca499ebadcea5cdfef8a1f00850e3c2bc800648fb31fbdc93d555803. 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/DEZC62250920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137056f7715b7c02e2b3407f5ce2396dc7fe75ac49a895bc48967d6ee22b0d99. 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/DEZC62250036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff44407ea14459779e8aeb1e37b03a5d8bed0b9ae1343ddefc50b87f3c4dad. 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/DEZC62355487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b517eddcd1520a606f806eecf2641c3a18d0c29c3d136bfd46bd5a7b41a12da. 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/DEWX22100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b6254fc7dd840174d018fa65a8d7b6662a6dc509db37037f03464c252f95d7. 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/DEVY82000678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cdab2e14e87ed9c5d50d083e72a58614cba08ee8acf4d0d4700066353a188d. 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/DGA072273139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b1b6af4fe11c1e5475c8b7085beed41415385b388b5bdc453db75b58d8d5b6. 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/DELZ32300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea129b863702ee99d269b756fb8df6b2889fc7243538dbcc71c9b54ad14680. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEQ2053917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea129b863702ee99d269b756fb8df6b2889fc7243538dbcc71c9b54ad14680. 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/QZMEQ2053917.
1994 MAMMUT REMIX (feat. Celo & Abdi, Olexesh, Marvin Game, Die P & Shogoon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd58228e16cd6d10b93c779bcb94b0c65cf08dadb032dbc816f2195b1ae86fb. 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/DETG92400057.