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 0xb1415c7fe7d79131a865ba5a941f0ca0705adabad66dd31c66640aed84bbbb5f. 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/6aa6bef5-62f6-48da-8d83-c2e640beeea9.json and https://artists.proofprofile.net/proofs/artist/6aa6bef5-62f6-48da-8d83-c2e640beeea9.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 0x89ed187fb12bcccf68b4cee3de0e9c082e2c3f92e07a1cdd4d41c31b028ae634. 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/USUR10000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d730658ffe852b2d9869604d17d2ba11357a5799ab2af90f786795459a422d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USUR10000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4250d22da5abce6f3090761043269a99afd42a99a625421fb83854c16b115213. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USUR10000815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac0efa21eabab4d17648ae02890744636a84d4c6bd55312ed8af157f6253d83. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USMC19137548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea683c002f18ff0694839f323296cb33fa968bd93f5ec30aac15a2a9279216. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USMC19137563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7afb5ff7246d8f57c053bf137be77a1f231b5bbccd821ccfdd72bdd5817690c. 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/USMC19137554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9143548bcc8cbced237eac026b78956795807caee7d0252ed58dbb7685dd9d4f. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USMC19137561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542a61e12754b5ac69c56d09cca113af8c1a47090d26bd88aaddd652291c3c68. 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/USQY50920080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e3d305058ab28832cc40f3fca2b9841ace9446933e1cea9ac79b0142f77f4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USQY50920069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdcda18f695514817302a4a406265f28b1dbd6449b1a0a1211ae0fa82c29cc2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USQY50920070.
(Listen To The) Flower People - Reggae Stylee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba1ae1c9e39e6e878513d360f5c5243b35eb9f76500c4331c092527551a87a3. 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/USQY50920071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0ffb898a1be4199cf575c9806b352e021bf1c259d87a2d147b8bcbf323e1a9. 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/USQY50920073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83f20f3b514a3c1a7d94cd903a4909ede603cba698768e416d89bfc3b186606. 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/USQY50920074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe287164963d1f46bcbb8465f2cca596df901980247092210dae0e504526344cc. 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/USQY50920076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7606a204fc51bf67972956b80096eab2295a4e39d032f724753afb63168eeb03. 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/USQY50920077.
Short And Sweet - Feat. John Mayer, Steve Vai, Phil Collen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a4000ab590ca96e01e7b8d8704819d24b4dc977cc870b1140fb216f95662c. 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/USQY50920078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ea47a7e4456adf1aeaab7fb62761a22a2ade566f2147ea743afd2e0f3c0d3d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:41Z), 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/USQY50920062.
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 0x3135aa779bdb74cb8c0e8d95dd0279189836fac220a5c8b11ba494de9a9b42b6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USQY50920063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27f6e9fe780cb489b0300df842942083a25bc4274e27621006b447cf6ad33ee. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USQY50920064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e84eac1507a40c7e0aff682375b3fbf0617222b73a2ed683a0ba61c897ec81. 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/USQY50920065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e1b21ac0c4c05cbde78376470df2e136748ddfba663486a77d957bd1f9bb7. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USQY50920066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23589c1324cfa0460ea40360eb8d898c5e25c84bd40432c57788bb2024563020. 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/USQY50920067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66538f3b920b2de98eefc1f0e8a134ac0430fbdeba75e0894efba1ec1c592edc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USQY50920068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc7a6ac290b329d90a4f26ac5da3a34531345d91481ebc31f5f00856a6e2fca. 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/USQY50920072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be204d680016e39ddd64b132a63f17c866b6cfbaeb446c7fcdd50bf9bb239d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USQY50920079.