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 0x2a6fe23914d9af1ac428562b7806c9f4c4bf079133883c895d7b61b657ec2d00. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16cbd049-4595-4e59-ba24-4f54fbeb3031.json and https://artists.proofprofile.net/proofs/artist/16cbd049-4595-4e59-ba24-4f54fbeb3031.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 0xa6531c42df60ec5734037f7bcc22aa7533b2c934539763aad60617cbbf4d376d. 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/GBKQU2064224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2d2e776ae7b453d880a6b7f090ed6ca229ad5a335a013c60b57917ec16d558. 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/QZWDE2358150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb7248eabb3ff5c7001f70d533431ca4211afbd6f385fa871cc9a3a1b02b22. 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/QZWDE2358152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdd0698c88ee30887ddae151f2805f64654496138a4b9bb1291465ebabd49f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDE2358153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958f3b7318e00b3dd09f200eb0fe72809e6cb3cbe2afa023db25eb831c5e45d7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZWDE2358156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dea99595e1b5c3c17ee0150daecb6ebe9b95369a647036155d2f0dd2af13ee. 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/QZWDE2358159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd762ed5762cf40013ee9b132f41f2116002a8362eaaf5e41462d6e510a3e7626. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZWDE2358161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3121735bb845b274bb61f40fe6c45d54d4236c8384740a9eea73a82bb489c5. 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/QZWDE2358164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d889113f9ffec7a45e056896ef4da9eb09f529ae131302515222c58317a603. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDE2358165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a07cdd3e02f55475616a2f695583ba885421b701f95ea103fefd5d14ccfb74. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/USLZJ2370226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb353e30108451e022a2bfd53fc3c7a2540e92e06d1a586a497348cdf8d49a501. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USLZJ2370228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7df7367f001c107b8ab5cf284759714d4de5f874225a0665cc5eeb1b58eedeb. 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/USLZJ2370229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ddc5b01199f7f08e3be0d549acbfdb1435a83cdd68651ebcd14e7a81787bc1. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USLZJ2370230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40fc3437389b3b3bb19849aea469b8e45680399d943651bc1b8797adf98a19b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USLZJ2370231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddfe0524ff9d57b13497335c37ffe9da8dcdf3ffac349d25446633fd27017e7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USLZJ2370233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a33ae12273c75662e87f8b11d6ea26ce6e08b30c28f4b8d7005ba94a478603. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USLZJ2370235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba84fcc5725d3e605cf826619c0dcf276ae3510763542ca8e317df7743359d1. 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/USLZJ2370236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa659e7e174ee44bd9ed62573851a8f582eab9f6991e6f1eab941e64002ee79f6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZ5FN2213927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bf223f11ba22aca827e4a631b60a8abcdb60a3facd634f8f5392c8f4518f1f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBRKQ2171973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c724c65c9e61009b7324b6a8f44ddfe0c8454bd52629b92aa0aaaab13a6ede. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZ5FN2116169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7f46846172a51d166250c00dee0c2a9a1ac17265540fcad4d857be2a18679d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBKQU1948960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4198cf9c277287e555c356afe59c497134c2a4bf56d1a78fc93f835a726de92. 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/AUXN21815085.
Nothing But... Hardstyle Anthems, Vol. 06
Nothing But... Hardstyle Anthems, Vol. 15