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 0x98d312bf0a083adf3226cbd4ac1ce64e3a70812d62ecc836e7ad62aa5ef57632. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/796ab73d-aacd-49f1-a037-e7092fb3a594.json and https://artists.proofprofile.net/proofs/artist/796ab73d-aacd-49f1-a037-e7092fb3a594.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 0x018fc16c218efd639a3e2d872628cc6b36889729432169e4716100ef37c2c4d3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/USUYG1173039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4b7ef9a94ffd3934f3a2d7ebd148f64f03ee6f7f98a74b3222155c94f2647c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USUYG1213422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220468b8a659913d9819035c136a1ecd2616bc0cdd383141af15eba15dadd48. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CA5KR2198197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01680e7a95f147af08411ca72a7afd464a69321dce01383b5bee46e7a7d562cb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CA5KR2304107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c081015aba863bb1338dc9b480737a6d9db9b7c1c4a7ac0f94fade7802d71. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USUYG1539889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced208fdb2605550d15de963c4c817efcf99147ef49422f8430e5d70a04ca3f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZNWY2555724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd029ff258a764e49c6c66f95502f1fc694e763ae50c6e7858b69355cc5a569. 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/QZFL91800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e5ac2c7ab7ddb1b545a8a787b0fab2b4bc99ea9aad7b7251a05d988f8c2c4e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USUYG1230579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128b77fff5ea97dff553dc5a6bed45a6664714466e7edd66fddbe795da4bc206. 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/CA5KR2172542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d409fe698924690bb5e84258a377dfceceb437971b9c6896ec35e6ce31a04. 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/CA5KR2172544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817181b7cb2659cbef6a61dbd15a821749b54dbb21b98d7e5e9357e1cb95eedc. 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/CA5KR2172545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e3bc3f4d8193370f5cd31e243848fac57b4f5292e70b15249f18e2fa328f91. 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/CA5KR2172548.
Be Someone: HoUSton Population (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0675598045556d5f75c293311a4ecf84be802a6a8948c227454324d765e7c83. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR2227036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8260e34e8cdcbf1930562fac39c7e3259c57a25cdbd1d6402705d37874a3242e. 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/CA5KR2227004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe1fdeb6dcdf153831244dcc8d588086748732410addcf7f1ee4d1e32e030f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR2243027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eef481232df231fc72226125609a12fe3a63bd194afe90e574154129f036a1. 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/CA5KR2243029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1865d5bd0d6d83284a4e71a38734a3995740554c502d2230ad18fcaf3189e907. 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/CA5KR2243030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990e5e0a9633bb5d27b8e68ea6c80890716abacdf03a0bed1dbe25b210b2150. 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/CA5KR2243031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49324909c97a9beddf7dfe3349f26876f74301ea1d731dd6f5b3b059bc83445. 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/CA5KR2243032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5626cdec13d11a01ad12ee898f29ddd7525dc302847d800c60158078e828d8. 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/CA5KR2243033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d136267a8ac0f1e0907adc66bc93748dce1d649ab58d78f8bfb0203081380f3. 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/CA5KR2243039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128b77fff5ea97dff553dc5a6bed45a6664714466e7edd66fddbe795da4bc206. 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/CA5KR2172542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d409fe698924690bb5e84258a377dfceceb437971b9c6896ec35e6ce31a04. 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/CA5KR2172544.