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 0xb90053581e4a64d813735baa57c44793693c68d9bd3e618516c0fbc8df3524b4. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edf6c116-973a-4d12-8f91-e322f36dadfb.json and https://artists.proofprofile.net/proofs/artist/edf6c116-973a-4d12-8f91-e322f36dadfb.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 0x4c7ab07305e6f936ef0c42afaba540cd502aba599966b851402f9f04375ec793. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ATR981258991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae5c6fceedf3da62edb0de093e29ac40f0485fa77660a5fa2f94fd2676afcb2. 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/ATR981265191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5021972998d84719a9e8c26ed437f4dc279c7e55143b99d44f870f76142b46d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DE1FI2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905eff5b39a69548139664cc914b286248681cb46b7d142a3bb25197bf91331d. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/DE1FI2401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1757cf67f0c7a828431631f437e17e56bc97cb01eb22d5f6d7610d40d067fc79. 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/DE1FI2401053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb792d346f8943d88f72a7a26d0ae31b99738897a79f724ab126b8c629ba6db. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:24:12Z), 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/DE1FI2401054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d9689726ef1b01ee50b52d02feca9ad77129f0dab1cbef91ede0ebe4f1d01a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DE1FI2401055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9bd317e8ad0827d10906ee9e5e54e5724c3e9bb90edbf6988f9456b71e1ab8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DE1FI2401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9530bc126504b15232f035103799e0164bfc7654e80194f6dcfda0c82f69e28. 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/DE1FI2401057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5794155b58d257985991f400b16a6231cc738186151478f3bcf1dd9c4aa2f412. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DE1FI2401058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa238fc552ca2dff3def36e9c1d17f2221ced53dd3f43365d07ba570542bcd5b3. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DE1FI2401059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96701765ca9cbe76d0a370a6d6665a74029b1da2b306465cea145bf3ccb38eb2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:03Z), 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/DE1FI2401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b04b274d371bef2935b0c900fc942e06dd9ca6a2c89c58688b6cd8cde40a141. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DE1FI2401061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524f86cae109883d2db5deb2c2baeb1d530bb455ea5019e8a36fd2ce5c9506bd. 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/DE1FI2401062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b30df0e0077de1e108fb0bfb7a87c6925739b54e584b1c4b87afd25d73c4277. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DE1FI2401063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e11ac92ace485360fd3eac729550f596d51713b19c305c03d2060a2e47e477. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:54:53Z), 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/DE1FI2401064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72823d72e259acb95d7b6bc8071dd8a3096bdb199b6efa888acfbb4aade38ec. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:59:32Z), 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/DE1FI2401065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e26753c92d20a5052f0a702b8c53af93df1d6089579a9d91c49c4fc896077e. 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/DE1FI2401066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409edfea4c7e50db0e1f524ba7a767c92db3be45364eccbaa07a2f5740018abb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DE1FI2401067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be2ec17671d2e6f519e381723f9d6bad4127c88b3c02cdf9ce22672201b5d9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:46Z), 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/DE1FI2401068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887bc6daecacc68373482eaf9e5d1fc896135143df2975a5ae05845111455e7a. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/DE1FI2401069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eca521866bd8ddb25370f16332faa53fc87029040b2c09f44d06ce1605211d. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/DE1FI2401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fe337f9df8283620d05d1bda6de9cb3fefe908f19051deefa0ce445b27ca4b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:28Z), 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/DE1FI2401113.