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 0x58c33549b260648f09ea202192144e4315cb95a5b084f41a3ca19eeccf2fa853. 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/2a0db11d-912f-4592-8f61-0bfb721cf064.json and https://artists.proofprofile.net/proofs/artist/2a0db11d-912f-4592-8f61-0bfb721cf064.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Link Up Season (feat. Chip, Durrty Goodz, Swiss, Black the Ripper, Flowdan & Rocks Foe)
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 0xd80111eb5b1a61bc68a4a3fe9937aba0fde0e750d5dc7cda8acb10b040ebef2c. 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/TCACK1595069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2d13eee81b178d78250107395e96ce28ab8d8dffbdb563591391736931613. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBHLW2001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36ba738758fc8a4b78bed7fc70c4afb489824e545b0cfda9d8eabb8ebbce477. 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/GB5P52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf4e619abb5daa6f87f6755f098971dd6613f75d71082ac28ddb5da890a39ff. 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/GB5P52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4d33489eb8c89fc0b518771a76fae878338a688c54676759919ff1dcfdc97b. 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/GB5P52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1426850db4d9a3ea9d2b4393674cd173664bce11aade2475278022804c01f877. 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/GB5P52300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060565a6018a4d8131caed9beaa4b08edc36ff3e2b8bf8c64ac1c1c4662ed070. 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/GB5P52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520f12172ffe07d6db64183e190b3c52a2e24599df95b449d6d0a1b3f1d35930. 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/GB5P52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f488f12928d74c28d372e5a08c62018dbccbe0958cf056c7b431918e42bced. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:10Z), 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/GB5P52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9810c140f7c43e96719d49b97d6c8026f71a0cf4b4e80279a34e9cc27c297fb3. 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/GBTQV1700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa72f3be861fc20849d7f00ea4352829917b48a1fd3e09b24ee0431a6c7454. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBTQV1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce633da9901f7f86a291a05693f1ba54ea66f3d9f28b23619981ee514d99612. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBTQV1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64e2da200b0dbcea4666f954b6325c06af2cecaf1a46fe94d4122caba5e2891. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKCTU2003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9acfa63adaa290ab9154ac0ae99fd17bbba118deedd77c7940b4372d33b02b0. 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/UKCTU2003302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d264b4998e7df346215bb5ef25c34b101ddf939d9b641b3b09b9b56ebc1a68. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKCTU2003303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd508a608c6766621c83724fcc8ffee31cfa433aff296fd9d97e449564a1bb5. 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/UKCTU2003304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd171b163ddfa731f34cfcc7e86161c78c6fb9d1530b4c72e9b962d67f973be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBTQV1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0d7fc87f2a2b4cceb390f594e3aa1a6758d7b9d810fb576a4dcaac8b64fe1b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBTQV1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a8a6eff8e1b49f63d3a9974309d540a6b466b6cef6116c400a3356cdcaf822. 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/GBTQV1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b671f55460bd34065fe0a311c685e61b1626fd1ea582954f234419041eab2. 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/GBTQV1600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263bea9d748db76dee3b73f65780e1b334c759532b63cbfd169e195d0715cb43. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:06Z), 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/GBTQV1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4478087ca3eec39559c1375a8f468228f37d8714ba597d68bb8793495068e5. 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/GBTQV1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547cb67fcb75c723c4a8f24316095e0a56f08eb32830ec2aec6458f305bd2e95. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBTQV1600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7268fa9a4c6203103485362f29906bbf1fa7d4767403b09d71832b38dbfcea8. 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/GBLFP1722267.