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 0x97eaef841d036b897c7552d12ba5f5bd33e08d4866792ae2c3e9b15289c84df7. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/295e8ce3-4b9b-481e-a926-217adae2872a.json and https://artists.proofprofile.net/proofs/artist/295e8ce3-4b9b-481e-a926-217adae2872a.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 0xe8cfbc65a57552b9538a8cd9ce25d2b70fddd35cff2051e1d0062d890c6afa39. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DKBR20900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e9d1e5a10e8141278acbe0f9defd342b49fd1bce5b3e5e1fb8beb0ef9afa10. 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/DKBR20900702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e2e05cb3c48fab0c5d24e995d39d195dc92b5aeb236fa3b267b009e404e8c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DKBR20900703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f645113042c2a2b79f92015c3638ae1374c5c0785a3135e4e4756285906c4db. 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/DKBR20900704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526b0fc59576cdfebb5ac8a5fd1a55c228d5728a6ec45b84f7f2a88ee55979fd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DKBR20900706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd860399bea5217ddb221378529f342b0efaed2678c45a6a4362daea986836. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DKBR20900707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893bf96ec413dc8406d1c1a15970a7ea6509f0c4e121af5b2cc3092c47457295. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKBR20900708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644c5109112c5b65d639c2da1fbb3c6f048ba7da5e6209adcb6f236473f8322c. 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/DKBR20900709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9da44bfac6a315af12afe41cb47f74a68707614d3ea23efa60a42b06622278. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKBR20900710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186c68c35f3427f7ee5f219e427b0dd9fefd51caf519e64a7cbd059048af326. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DKBR20900711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc6f59fc4a79e947a497db519cf3e33882e521b8750650bc3dea18202c449a2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DKBR20900712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeceb2d9b35add199636146c011f873431928362b08c4e9292b049ad1433eb7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKBR20900714.
Her Er Et Budskab Baggrunden Til En Succes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c705fa8719d4193b9d5994adc3f6a1b063336c74d4ff1b267c3144e3be117cc. 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/DKBR20900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513ba8d0c70fa87ab51e4a521a8bf9d4ec20254bc1abcb728a590cc79006d606. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKBR20900716.
A Tribute to the Everyday Things (Dan Turèll & Halfdan E Meets Thomas E. Kennedy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05d1328f7e39e7be4658832037fb5c2eeece86096ec7bddcce855ead63f6c3. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DK1J31300101.
Dan Turell & Sølvstjernerne Vender Tilbage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8e61db76cfe2f67f004bc6f564f06770c018ad51c2f371b71d05c8b2c5069. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DKBC91900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea619fa0caeec2b12bc4cae293b52a64e41ef40eebd231cf31d5f6596054f83b. 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/DKBC91900802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7270ee4df16c37a08c8aea8fcba8eba57427664b4db6f5dd07515cea38e4f0. 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/DKBC91900805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f9c82b7f4b4115db8ec266fcaf5d8f4ee205b466a3e9cb13324cfa9f6daf5f. 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/DKBC91900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe799dfd33e458ee155d9542ab0d835f43dda8d9d0732214b67b4e53245c3e67. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DKBC91900807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1bc2a890c04d844744c9047cfd6fcba3ac22f30bdb0c53954e0e91058c5a6c. 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/GBLPF9300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b3a3295a334eb8f2a4276e10de409470f4ebb709504d93739bdcc0aaa5049. 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/GBLPF9300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de0d5f8ebdfb9c8ab4d810b9418286d84c3c6bfae5138d7c5a8f9d53455e78. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLPF9300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c18e1973fcf8984b762764f2713f298a148994c8ee5c7b5851363372fc8539. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLPF9300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c6554acb01331cb940df6d4bc4e76e89aa564aceb33f137c217aa1e0b8c2a5. 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/GBLPF9300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69212287669b4dfd33ed7c90a0abefd570b9517af69939c1d1d07ac041211e06. 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/GBLPF9300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b1056eebcaf6e1a4b1cf192eac0b14a8c72ed654e7c828bfc74006595b1c1d. 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/GBLPF9300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55460a24c057a27fec22b7e630b6ad4201f040072370395e99374e30a711d95. 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/GBLPF9300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d033c298cd9d5d7b2df8b5ce63338ebd4215f37e7bc6fbc6a77331a4dccb909. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLPF9300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2d45463a103591d4217009b6136c28fff1031ef13536207414f0408ae96448. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLPF9300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebfdc0200883f30e1ba64f0e32100e00fef5b6f690680c215baac9ac97e2c79. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLPF9300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c583b9bfee7094e4d6d18541567f2780b8176e77b3430dbc43430313fd68f. 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/GBLPF9300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ff5cbd57d771a2afa285dbcde51c81ff2998f82f95339e76fc642c8f1957da. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBLPF9300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb57bfc404fc9534c694373e4182064317cee43cba5586f6494eb78b2830db8. 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/GBLPF9300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239364571a611f542776b433bd4feb1686946b4ead3b5ee634b83492973e46c3. 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/GBLPF9300030.