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 0x0293abc9a669bbbadadab7f84460fa840fa759f78a5458946064b57940acb5b9. 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/3cffa4d3-c037-4a2b-bcb6-075f7a6bc246.json and https://artists.proofprofile.net/proofs/artist/3cffa4d3-c037-4a2b-bcb6-075f7a6bc246.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 0x41075536ba54a033289ec52858bb07d71657f9920a4d22ff331edd5d85d6335e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:43Z), 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/TCADU1815918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795140f5de416bcf3de07da4163ed53266fdcf0bb614ff2953f556949cebe0ae. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:47:22Z), 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/TCADU1815928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b847af9853edf0d453a3e796828630a718ec964ce965edb8f696db7fb708a7a. 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/QM42K1915661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5443aeb04c22aa7eb3de8aa50d9d8c6f4b09e237faa2ca84fd7a722d222eac7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHP2086792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5443aeb04c22aa7eb3de8aa50d9d8c6f4b09e237faa2ca84fd7a722d222eac7e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMHP2086792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c54e05998accae96afcf6499e658bf8be3610aca44392f4e3d66a53fcdb723d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZS632136012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ecfb3594987fae849560c3ef9009bef554b488ad296da6741b78bc39c72db. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZS632148003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8604bdd21a84a9820dc36acefaae30dfbd3fea1dcb1f77ffc3d9660a617b0c6a. 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/QZS652163321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0455c66eac90f638ea15838d11ea1133987577abb4ff3a961331f3ea1881a67a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM42K2209576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330f2c5cdcc9416d56febffb799e26bee8b6d765632b61da2ec3907e241637a0. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/CA5KR2239787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690697b86c2368d91c37645521e50888a71e5925ddf54421fb43b787879b3a9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CA5KR2239788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff618d1a621fc3d0f70866181817bcc5f7c7e2735e4d7f65c9ed8351b71d268. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:30:11Z), 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/CA5KR2239789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98771a79ca102a1ebae1f08f237cd815cffe2414174885ff4da3da2f7ee948b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/CA5KR2239791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bb04c4c1acb9a0b19eabc28e5737811172f66b2552b1b56efa4c8a4c1c5c77. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CA5KR2239795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc125fcde1d5462c610bddf6454fd1639e39266a60047124e9339870b58d47b86. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d32527b544ce467cda145fa6292ef751de1e6a59b3ee74545e9e69e51f1439. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR2401809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b912d70db7074bf53ee733c16f0202c703986274d8e48058dc92d89053a834. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CA5KR2401811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b005a36fb75829298668ce476af375dd1409f9bd9ecea5c007b3087f65bdfe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:53Z), 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/CA5KR2490577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117f2f0ae35ec85de30c1bab60adee712caab2134c1a3dca60e90f900d21f2d4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CA5KR2498741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3065242d40da91cdaf15bfbc6f57e5df00f6f1b6b6ad7de670ff4c053186f5c0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:46Z), 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/CA5KR2498742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17acb6d4f029a9936ea8c1a6f7ba75f5ec150fab680f815001f14f682abf50. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CA5KR2590324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab2818d6f34c233b675da8ead126c8e00287bbe15940b2784879b000b81102. 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/CA5KR2309856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8d70725edd71ce4b0ddf94d1fa673922daf63ac2d8c228277884a0784ce7f. 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/QM42K1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22d646f94612e1c769984b4a73c601ecca630695db65e2ade677f2c8d431670. 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/CA5KR2177608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5733feda0e7bba6524355460d85ddb8ccce85bc2ad2c0e0f7b21312571cf91. 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/NLRD52302473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaab8d617b175569db56b0828180d93b3d6aa9b18665b4c097611985b4ffb92b. 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/CA5KR1939774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3a839331046aaa70cbb5e1fbcd8d79860362da11ae249a17b23a83d303e08e. 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/UK7H21500164.
Papers (HE$H Remix) [feat. Jared Watson of Dirty Heads]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101458eba8c8266b96fec8ed649e28a10c1aee2e829f527432e3d7f61d25b49c. 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/USDM31916215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb1fc0f50d784725152ec67089b3ffd4ffbb87bcf424605df9ef975dd4a1d65. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:01:25Z), 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/CA5KR2320848.
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 0x2e6817a25d1681b394eabe6543034df0b16dd97892d2783b92398af430c037b8. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GB8KE1950840.