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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18e09298638f28cb134c3f5969280deac65bdc989b1555e56d6eb2ed8587a10. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47a537cf-f672-47f3-ae08-40ae2923c09c.json and https://artists.proofprofile.net/proofs/artist/47a537cf-f672-47f3-ae08-40ae2923c09c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3df539635e81bb89c4ffea1d9558428cb421c9e52e272fd662d8aa2b08c0b49. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKA131301508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb965f2806955f52554bfd6fa7f5785a42984d7d64d2474025e09bd85f6283. 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/HKA131301509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e82a5fcde25eec068a4d6a147a9ce717ebe885ecae95b2cc6b6e2343fed4d. 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/HKA131301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efc83ecd610025cfa79a60f525d0f8b4a17780a5f3d162c64367b552c3131d7. 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/HKA131301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32fd34899752b2ac91e3055bb27d455b70d81660ac71bcffc11d4e4b460b980. 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/HKA131301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd2f59bc8b89cdc549300346cc048911c46aa9d80a09f1f98c89bb0e527e681. 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/HKA131301513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22be62c0369d5e8be1287cd68a8a2a3a784ca9a3d47d5d2029d755c73343def1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKA131301515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285ad70c45cfe797a4187d4c4403dc7300749cb77debefa7d8d2aae1fb16ee27. 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/HKA131301516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bf647e031e85154e3c79c7e4dcad6647fff68ac9f76a961dd4e829156f3299. 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/HKA131301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5cf656593cf9b6db6a6c3e6ea3fee20ddb4acb50d49d372c3a4d68079f17e9. 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/GX5MY2323859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202017de1c53f82fa5012c9a6f8e5287d3e3962071690a976b9108114790a2a. 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/GX5MY2356106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab9e3d81e6041d60718d48c45a1b60cc66f9bf6559b2bd709ae12ef3b43e940. 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/GX5MY2310782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf391304aa0fb81c0250794652dcc439f324e9e6b8e4aa2aad861def9be3afe. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GX5MY2311274.
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 0xa16ddda017ca0b0abf6e5e2bd49425cbf74673813106f73d019ed4d2a9a83b8d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:55:25Z), 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/GX5MY2402507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182a6f2d93e717e73db95f69e47b096cf6eef5d8676505ea05d216fb49ddc026. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GX5MY2406437.
醫生我無病 (feat. Matt Force) - Album Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266eaf928ee74e1fe6fe5eae9b8df715bbb8e935f4fc7906bc9a33afbff455bc. 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/HKA412300699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1613be3d345a74eb3372443f45afd89a91e6192befc8e221d81b5451295e9f75. 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/HKJ961901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3338bad2dfe32ca893afbf46c58187442d1f12024a5ca358ad0d667cf99807. 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/GBKPL2029876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352968fdc13007a6f3003145022828d1e2ef016cf0f1f0a6c8d7b0dd8942e8ac. 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/HKA131301611.