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 0xd8e783ffe05738ea8439ec6d41ecf0dec79dfde5ee9d71afcf8f7c735f1852d6. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e168a1b-b46a-4e6e-983f-42023fb3c547.json and https://artists.proofprofile.net/proofs/artist/0e168a1b-b46a-4e6e-983f-42023fb3c547.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 0xea1bd918027789e50ec5b5423138ee29b10803ce088a5ce43eda6aa8dba90dfa. 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/QZK6Q2113051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88955c8fff1c9f8489801f9789ff5a7b2f704c659cc141ca34b5b4e2a8ffc999. 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/QZES52179884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e49987cdd0adab8f52892d9a24d81270e803e392ead8594cc591b91792b989. 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/QZFZ32116656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bddd1fcde94cf7a13f603509cb411555c7b0399555cfb64d47650b86f5f44d1. 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/QZNWV2065226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c3c13ee12251a0e99cca735bee3843e9fdb16717e7e147c0365ea712e66fe6. 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/QZNWV2065309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932b895ef364d9c783d0fc0da1813d9613e02f8e639caf8b5d7e474001fb9060. 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/QZNWV2065199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7982860ad53477ccd4a1d429c7140ea3cb60bfccb5937721daa351a39b1e0b81. 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/QZMEM2091849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac507dc885511d33e242b95fc93fdb672474862010796cd1ac8690a9c9b790. 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/QZMEM2091843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a7299682856575d341e01f6166257a1048c7890d494d8585de429ad02431f. 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/QZMEM2091840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6073933592caa5293b22cebd0d9a6e5f1579a2e6591255ccf8164af84e007dc4. 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/QZK6P1913688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb83d951a5a9b497c7530e780d945432281a8f0679df92ffdec32c4cdfbc9d8. 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/QZK6P1905703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c211226d90cc7b03025d6ca850085a70ace47f9bd265ebd3e25a5dc77689dc. 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/QZHN51991797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5553f53e064c062165b3f18429140a0c571f0d5142538fc5ea77cd97f6d0e3b7. 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/QZHN31920754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5740f89cf1e0cff378eec0dd5acd4acd3ca05c81ff50f05851454d7430b25f. 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/QZES81949309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536a38f85863d1e029ab9cbf80fa24aa3910e36d8d2b5fa54931645d770f9082. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDA61923235.
Be Still / Some Kind of Love / Battle Born
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6fa426a554a0b1c885dfe9e5c4ec211d4b1abb4076927c547afad0e35e059d. 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/QZDA81860715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb92a19a5b275c024eb6bef362ad555996175c1e29b28926089f2439e5d45494. 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/QZBRF1867376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf005bdecf2a838bc1ab66176c8ee5deba0b8cdbb008343e26a7b27a50f9a100. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZAPG1876996.