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 0xe8af1bbefbc64967cdfaef9f6d37f28a324b329b0d3cfa18862691e81d9cd310. 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/6ca5401b-f629-42b0-bdc9-136b7aa3c8be.json and https://artists.proofprofile.net/proofs/artist/6ca5401b-f629-42b0-bdc9-136b7aa3c8be.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 0x712510903b180619686ea6b50317b13cd5cbc4e1ea4397054a2da060e79b1d82. 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/US39N2202711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b3508535df8eaaa15eeaf31a0df341d61105d2e49837c513693ce3a4f2c441. 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/USF4Z2200090.
Ray Man (Live in San Francisco 10/11/19)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfceba7c03a5c3f3b6e556e1b243b71b40f816bbb141d6f6b592509009c2699. 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/USF4Z2200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda903e88fba32197b4f7b58b9bf3d8405ac4d5e23297986d9e8364bf917e746. 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/USF4Z2200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aeaa23b96dab07087ab8a879ef0b8c848e2ebbaadf9bba364c0266ebb313a7. 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/USF4Z2300001.
Sat Naaraa-in (Live in Los Angeles 10/13/19)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe3be4014a709c1e98b9bf766723200cddc288d0769f5d6fd62d712741ebc8. 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/USF4Z2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe194f7e5861dbcb0f330ae44908f76d7f9fec54d56a12f878170822d5016931. 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/USF4Z2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84f7cd0f5f7b038b92083d64bd393b166b9ccde181245645159ac306391cbe. 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/USF4Z2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cae9bbb0df9b6acdc3e163c00a4fe73fa49f959ea541d99ab066fd68f29b772. 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/USF4Z2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41b027c88ff463856a68004da069aacf975f21a668153a542ea02168aef613d. 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/USF4Z2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9832e3a8af9e2f16dd491507281aa680cade0cdbb6a539b8986d6465fe35e562. 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/USF4Z2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30cba629e34c6a9e0a3cc33a6a3b252c98e06fe71ee956e92b2b868c10c0b05. 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/USF4Z2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e29b8283548e41802ef37e6d67f729339d202308dce5fc1e952c116a0c6cc3c. 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/USF4Z2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b557b625654a77e8a12ef37ab4edcd86a7892beadc4009f3c362459b9f3efd. 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/USF4Z2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908b8efde46ea1a2f6f95690566eec717f989a65c85dc94ac132b54204ee4e8. 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/USKHG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51f9bc94a94c8d66786c3f21e8412c43f2b52f017d8af0d5cd5f2783b589139. 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/USKHG2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74669087cb480dacd05344100327e99fee3e73c328741d15d95d7cd6fcb92f74. 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/USKHG2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad862215f599200792a72526f46c9464825d1aa18181bd2e4aec0350739069ee. 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/USKHG2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0960b9d4d6e9249b90212cf63383daec67b072854c1db753634a7ea56f6f3119. 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/USKHG2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0871567c545c001cd94d6a7fdf81c59f9fd6cc6e1b370d83daa5fb43650f93. 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/USKHG2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bde7aca3880e6ab9e660f2dac035189c23ee188e3a457a604fc25821dba3a43. 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/USKHG2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a8df8c8194ad7196312065fedabc4913d901d551782170423813cb3c2284e. 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/USKHG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bde7aca3880e6ab9e660f2dac035189c23ee188e3a457a604fc25821dba3a43. 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/USKHG2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a8df8c8194ad7196312065fedabc4913d901d551782170423813cb3c2284e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USKHG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908b8efde46ea1a2f6f95690566eec717f989a65c85dc94ac132b54204ee4e8. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USKHG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0960b9d4d6e9249b90212cf63383daec67b072854c1db753634a7ea56f6f3119. 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/USKHG2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a8df8c8194ad7196312065fedabc4913d901d551782170423813cb3c2284e. 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/USKHG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908b8efde46ea1a2f6f95690566eec717f989a65c85dc94ac132b54204ee4e8. 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/USKHG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908b8efde46ea1a2f6f95690566eec717f989a65c85dc94ac132b54204ee4e8. 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/USKHG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0960b9d4d6e9249b90212cf63383daec67b072854c1db753634a7ea56f6f3119. 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/USKHG2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ca255550f9e08846176c4704a4848c5d5401307ef3074c355278a12606b7d8. 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/USKHG2021212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd84f15cce0e7e71d8e115f1d1d2d694669160e504ef8750ce19fb4d466515. 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/USKHG2021214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3f818ad387e0eda3be87b2702084684e584c7db21a73ffc40b33628920a906. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USKHG2021215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ca255550f9e08846176c4704a4848c5d5401307ef3074c355278a12606b7d8. 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/USKHG2021212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928cc565e7a36a8c191d761b20059d8ef8b6acddbfd39db310eaf8a09487e25a. 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/USKHG2021213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad45e08fe4472377651bebd7c657fdd2a121b66e65c072503f89d8247eba46. 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/USKHG2021211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad45e08fe4472377651bebd7c657fdd2a121b66e65c072503f89d8247eba46. 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/USKHG2021211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfada046491595d95a7823b9547e703f6c72173a274327f2ef1ccdf072761fe80. 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/USKHG2021191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb108cd2838932b5812100827313527d0b854690fe8ecc73ddb179678350e5e7. 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/USKHG2000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3165d74cc6a30a98912464d5a9963e5faaf269f10a83e3e97629a3f21416e26c. 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/USKHG2000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208089f4ab26f24ef8c48961e6ee626ac99921056dba9b509d9642eb87b75fb. 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/USKHG2000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1571380d61acd54329d4a97b97e9d1c1a4fb29873d86e4b35753b61b90cd13b7. 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/USKHG2000194.