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 0xff21f9f4dceb5ab53e1442163731c5643219ecebdb04a7569d2f4386dcec35d4. 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/d278c514-7025-4cd3-9981-a6576a638d75.json and https://artists.proofprofile.net/proofs/artist/d278c514-7025-4cd3-9981-a6576a638d75.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 0x4178b5ae883edcf7026eabae279497bf732e416880519005b8237e70f22f4d0b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/PLA241400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297c8ed17d352b731812b1ddb31d4954e044ad7baf7564190df9c94ea3419f55. 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/PLA241400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4af38af00f764b2e2b428cd5c0b4ab7738cb2bfb6ab1c7d10b80d12c1911d1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLA241400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59604bca52498bb967611fc271352192d380357471961d63787994317a96e26a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/PLA241400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb670628e54040f69625b593b597511ab8a87d9d093fd4e0ba6b2159f014049f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/PLA241400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01e0bc0132f708dce27be46b8030fd406cb4d219eeb594ab580d5df409c213d. 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/PLA241400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb947228ea8bb2f6b3d40cad2be12718e28f037deca64061ac47f4c011765e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLA241400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1b8c8c6fb49015210852c3517a7451916dbaf82ce4cecc49fc9459d2b7532b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PLA241400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092dcccfea1dc834a764162d743443317617c7e67bac8ea651710ccb4bcfebe. 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/PLA241400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d64f4d469f07ddc1321eed43c98c1dc282f3eeacbba4679ad7b73bca9989cf. 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/PLA241400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e75cae355f6d0726ea4917f5ebc8870a3ddf48d38820e0f5ba770e18bee556e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:19Z), 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/PLA241400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6f20026d2542c7383f847de1daf2d0e1e6b979dd858d4f2c90871893798d8a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PLA241400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6825856a284f8aaf61eac002ffb0ad0b5baea3c7f5d09a0334f9c90f610e906d. 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/PLA241400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c5302d8354be6e48bc06bff9500bc12280b11bc7ca70625217501c0b2c75cd. 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/PLA241400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322de622ac90ded74b90445d4c0cbd1566276ee8cb80973fbaafe1a901cd770a. 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/PLA241400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290a7c1a56ebf2f9344421a00fe0b389e2deb545363ba36adb986182a75dd9a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLA241400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf679c576339cf06b4a1a4045d1510423355b06c4e36a4ba58e9a1f3ff33a77. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PLA241400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59740987140fd2c2e769e35c33a4e7d536b263a9433d2c3dc38b93a8b2776d69. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/PLA241400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a47d499d9f4f068922d0cd62a24468adbb1dfd53679da5234d575cd82a8b37. 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/PLA241400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f14c585d263a77634681c1edde17782f2eb4903b1cab9e47cda7430a248ff7b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:50:13Z), 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/PLA241500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb2cc650b29d6a82eea4d6913ebdb704c12a077e26237fba270d4155dc1434b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLA241500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387f4195dad89502c100d7eae0a337877b27cf4d03918248da999aa8c7bb698. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:53:07Z), 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/PLA247418796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2c3bd0eb37ff0bdaad44496ce1c9d50612c9a8f0139dbbc580db4e402dd18. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:30Z), 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/PLA551700222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec969170d3165735c770f5d1eba197b53ad07c3c492692abdb99f795e4c441. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLA291129023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726b6333bfa533e105413c43a948ad77efbf7fc5f5729571ac21dd5f934f6780. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/PLA291129032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a96af2737482bd318e5e61b907573c62dcdc63b5753c9beae0dc70d4fe9efc5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:51:02Z), 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/PLA291129021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14ceb99744decae9cc7292d0e6d7fc7ae72bd887cb5271374fb7abb2ee8a4e1. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/PLA241400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa60f8fa85f214b0345c931ecc02594a31c825176195ba84c76cbc5cfdd6dea5. 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/PLA246812243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211dc5fe676467ffebe97ecccd753902e3bd3c97287ac4fa7e100130c70af46. 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/PLA551501646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969f712153a8b45d0c23e4b7a49159e7dadb0fbbe509a79fdf7adf06306ec192. 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/PLA241400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c1275844dfd9497baf60a40ca8d9b7843ee81fd6e631a5c90986afca7a39db. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:38:59Z), 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/PLA551501653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734c20ce6e2fd643e80f721e0c8f16d03cc07c4f851e97dad4f959e80057b6e4. 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/PLA246812246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc9df59e8cd78b0db42aa9114fa258982460d0c8e580e88ea9661f25cfe9ba. 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/PLA241400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f788ced82eb70ee84a87b661c0a92a125fc98eb25532440dbb6514e7427f5ac. 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/PLA391488503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6941d947fcb4c9aa37b52fd0c7c016b0c7b76bafc9a03f001210e26ba2fc532. 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/PLA391592003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe324d7c289ff69be43a0ca30a74bf89ce0b69ebee73d7f05e43a93113f1a2f33. 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/PLA391591904.
Die 100 besten Ostsongs (Die radio eins Top 100 Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73363e1ce6afa4a95bddc272dc29e86fca270e1e0c6b7e445191687443cefc0. 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/DEC731900015.