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 0xc54d36dd859f886c792373527d8f7f0937438f2a63c18d9c7d72cdfc818de44f. 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/b25ef8f9-174d-4401-8233-e3cc46ef2452.json and https://artists.proofprofile.net/proofs/artist/b25ef8f9-174d-4401-8233-e3cc46ef2452.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
How Can We Be Joyful in a World Full of Knowledge?
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 0x833dfe0327b70b5feba65385c51977c5a53bcbed11e0e70302a5cc9a12a1cc90. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:29:00Z), 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/PTPK11400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237b1d8ff167e0af054713f50dada04e3eb11234562fbe675bb2aef8f289f259. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/PTPK11400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1c1d5bc752d9be986758077966c337d6892696d3391c7b75b0bd9069820a19. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:49:19Z), 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/PTPK11400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63111ee45d48d97235ce525afe38195e921170b3f1f77ebf31daa4d0749cd89. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:02Z), 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/PTPK11400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a695595eda898948109f41b93cea7a411a7b759fbe9fad1f64bc8e4d75c73c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/PTPK11400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb8fa948293c0353b4a14ebb7782966a278edb3f03851d207bd21a3d0d5ce66. 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/PTPK11400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2a439ea702416c89f362688d03ce6efa06553843269abacce26aaa2646bc0e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PTPK11400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f2ef73ff3fad5127b48c411f2d0c80dd69aa18aa716fb5576e2ca73e696011. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:09:12Z), 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/PTPK11400009.
Those Who Throw Objects at the Crocodiles Will Be Asked to Retrieve Them
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd697943da46990e9ee9fb2c4189e76da17e1a8e867b46fed7a282283d71e1a46. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/PTPK11600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732f19b3ec0e664f05c87dd42c385b65c7b7177fad596852d8342ed4593ea55f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:09:41Z), 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/PTPK11600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809097c44e14b76ccc0f4e75aa46fe5e9c0637cf580d839c6c39dc55fbe68bd6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PTPK11600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc0ba255c563f8d32a000c3f5673586869d9df8ec1e9bf8947291c2e4a7a625. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/PT5JJ2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8046c6bb130c2e3bf36f4a69795942c73c2f2c3918332d6a9cd8e4cf87e324. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/PT5JJ2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0e709c4d83c987681dae2c9f29aabe3d692988feff8e8266dbcfb6b62289a9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/PT5JJ2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c02faa74820b605d87a976dae0a2bd6bb82c4b43256fc3f4ba360309687978. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PT5JJ2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a506a8dc48ef3695908c9567ce73d3c1bad83432758da0bfa1adb7b645fad62. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PT5JJ2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55747c0fd8abfe09e3ce9a147b5e0be8fb516a09bf3cd922a30aa758db402cd3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PT5JJ2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0c62d8f1f8226dcd8608307e371e4a43c6f8c4b581618c8788c0f645e699d0. 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/PT5JJ2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f553ce0100c0d6a155905943499917e76ebf5d6e4e3f88bad170552f570e9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PT5JJ2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb1010cbb337a5a765f56b8a2f8df3309bafac80973384bd8e3345002c544fa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PT5JJ2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750b62fcbef34ab069a46bf9d7833828b8acdc8d59efab8424b1b1dfd6c3915f. 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/PT5JJ2100013.