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 0x4084a6f7a5a2c77572a8d667c17e97cec52380cd54ca7606a584cdef94103717. 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/13cead24-2961-4e2e-a699-b4cfc3abda4c.json and https://artists.proofprofile.net/proofs/artist/13cead24-2961-4e2e-a699-b4cfc3abda4c.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 0xc667154f92657e77663d83792cb6f323407d595357e6253a9dffe0005e2a6b2d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEPA51899301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89cf1998fc39a53a93a2d3932134eacdb52a927a87804307484d267363de6a3. 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/DEPA51899302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e8abd371f41dcaf34f163e7e825e5946245132ca370dd055b47986c727ad46. 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/DEPA51899304.
Liebling, ich hab' dich tanzen seh'n - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709341b38a4503e856d12f05ea0da343345f6ec3fc18e82349cd1ff45160044f. 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/DEPA51899306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5933f99ce582ecc2624a949a0a58f44a65965f8fdedf1b9d6d79976ae1d2923a. 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/DEPA51899307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e851291bc00005081fcbfe8370caf94a1173c3d8329940037d786551a65f7f2. 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/DEPA51899308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aba6469fe5bc7469fabef47c43fa8d8d4784f7099a5ca7df149862e73077f4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:58Z), 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/DEPA51899310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9d395c570490960bbedc8eb5d3c32e841223acea2c32010f7b148a71624d4a. 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/DEPA51899311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac75056f04dcc5343b568760a09c405abee2e5c86fe365b60a99ff59356ea2. 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/DEPA51899314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6123479ca2b93932510d272ac548d94b504620b0842cbfd778b2cdad35670c8. 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/DEPA51899316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd8b07af42c246f68c8e18def0e54ca103c651b640bc8aed787360d249618a. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DEPA51900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf6840baf3b8ab871c68fdf2f37e0d20b872969b96fad504204ee7a6d0a0eea. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:47Z), 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/DEPA51900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54c0b611b0993083b107b82bf2c7f471abdc251ae317ec9bab0a9038d7f8c87. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEPA51900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0eab4d87478c4b3faabfe2fbb235c415c34d01e89327751a0d8d91a729fc0b. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEPA51900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353601fd45f88f4ee488db0f8eea320190eb71bc39ed553b04a28eeb9fa2f7fa. 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/DEAR42063987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0913d8be0beabbf8d62fcc77ca143a4de7880c46fb521508c98445b10a28a7. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:13Z), 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/DEAR42064023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9205e735f06b48ba7b3af842bc1930c8a259f25f46ef29c29f2a54925bb13f0c. 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/DEAR42064048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc310cd2d1871c92b45c950231f2adabe44b7b6c45a38a241fbeb6df2695c6. 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/DEAR42345641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862539e2b012c3b8c48c4e92638c969d9cec0ddf712550e785baeb2dbe34463. 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/DEAR42382212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8812b86233b47463cc6a99f40e88e7fe5270ec7a10e47c476204727b5e316534. 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/DEAR42331941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0d040aa5e4cda4d4f4a4732e5364d362d5180556c4a78ac2e7096cf057d21c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:02Z), 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/DEAR42326715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13b2cc045426cf66ed6b99d5a3de4697476e20673d9d9a8b7c6387a8fe86cb8. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:00:30Z), 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/DEAR42470091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf259b819d0bd1c488a42ed94a0878d50f549aef548e81485c6af5f8a45bebe9e. 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/DEAR42470062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945567be220d7934bb5a12e4b5c5dec2246ade28792f09f7a28823403bf59687. 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/DEAR42470206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd98b82d5b82957a038f122881cc8c53a65ab46c4d1bea3fda31128952c90e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEAR42470095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabd6271db7f857e31e096bfd0900f17925f9436340be5e44c7f55e1fcc34f2d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEAR42470250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b30055e4f18929a08d83f13e904328c05e474e41611ce7762cc39ede0c9f66. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEAR42470078.
Vivaldi - Konzert für 2 Trompeten in C-Dur, 1.Allegro - live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00fc7f636d74b0dd128bdcaca42e1042ac2f55cf51c70e0318a3a55aba12d04. 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/DE1BT2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9201b577e3d6a2449a21ca13eee7083074436fd81d631c2af7ed32d2d2d0253. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DE1BT2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f6a4fb90f3b1a59dac4a9f1e467463c0be24f6269c9b8e899ee1792036320. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DE1BT2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf13b6fbda05ec74ddbaef0f4fdf6f8e6dce7902088dd3363a82de16027e996. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DE1BT2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80177a09e342916f3c88cc6a3dd586e438eee3b6a247da5ef2af256f1c1035b8. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:19Z), 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/DE1BT2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb61c5cc682b61e9d2f64c41de9b94fe7d330b8062c92e5ac7248d91a1e4c54. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DE1BT2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cafa4ec2ad37eb0eee61fdd5f21a2c0f24b158db4de4297d5bd3b6db07df41. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/DE1BT2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b3000ad937ab3cd32d0fa0a03ad24dc2dbdb4d42607db392d12a8dcd2044b7. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DE1BT2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b4e592ab3aa40115c38605674945e6d7922bfdd3ad21121b5d99bb917fb4e8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DE1BT2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18023f2d26509c958006910a0f82dab3fc176ee6ace3e9d43349a42cdd03c323. 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/DE1BT2400005.