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 0x6ca4d1a88fe9a96a28b0c6dccb84e9fe49c1e85b641e922b9c32703c51d49ced. 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/98890077-03fc-4489-bc29-86bac51dff3c.json and https://artists.proofprofile.net/proofs/artist/98890077-03fc-4489-bc29-86bac51dff3c.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 0xfd64a07d89bce40f5aa96ababffb68b0f749e8a09ae5056d43aec4b7f8d28b8a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/INS9W2200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489bb34075faea5687fcbe55f19a0d12df96d321e3fd222d6b70fa4eee36358. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/INS9W2200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d47c7e638f9f9750cf2a4ab74f37f19f40b8f36b00c6a717af4049bab5f0c58. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INS9W2200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d23521f1c4726d248ada3f71c04c667b5c8b9cf1d3e2fcfdd94d67c6302595. 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/INS9W2200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fd983e17c44248f31c9dfccded55626cf5231f9fbc3930d0f66ba856ca3fdd. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/INS9W2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b043f98603bffda1256e3ee8865152c0d8d297cb504802295df871477814a2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/INS9W2200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4079e02c79d2c4d2ea591633cd7aa86d93457f538fad377de555f7de049976ca. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWDD2555963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d5fa8707514a786c33f5cb52f5baec83135c1e0387da12c8284f74f18c81c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:47Z), 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/QZNJX2172930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7829fe0ad320933059192ba4c0aab5e90dc879346d4b6a33568c050dd4df07b3. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/INS9W2300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502fd3be5ab173ff82d060d673b464c62922f417d171c202d848cdc14bd4a554. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:07Z), 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/INS9W2300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c3e7bcbea5d8df25fdd607086ecaa94a753fecd58c27f90eda7aa72035143c. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/INS9W2300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a2a5b3be03bf6989fb1ad51f7aee5877f09a7205ff71546d19a3dfa55f35b4. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/INS9W2300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacca00e1243272479db77a0dbd385b932ea06aea6f05a0638b751aa69488532. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:46:59Z), 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/INS9W2400329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084f745ce7344902d92dcce988ed52c5942dbdcdc0ec3bf3dc346fe35a7458d9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/INS9W2400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b542684148259405019a3bda5c4cc2990c82ef2857b2c67ab6004d3248330d. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/INS9W2400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4491253e60670f9b03690571c218d6d8196e364b23d2caeadc5700841b92ed16. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/INS9W2400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67a6989b17005b996355fcd01b0ec2566cc096f42ad29097613fac98d33ffc1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:26Z), 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/INS9W2400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba58ec4be7434145e34132689158da12289e66dadc6c14d7817f4725a0d55b9c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/INS9W2400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde55b07701849914b1b38548a559a8f6a5c11b0b94dd0d362be9f62027d09051. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/INS9W2400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2318cc37163273c4ea82a91462fd5d33522b98be5ec663f4c12a1ce7f5c652b6. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/INS9W2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55932b199132b846817d43ebc9a9297dbb3af192f32cc97cdd8af4b2a28a781c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJB2430005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5310b5aad14439d26cc2c58fbd706942a345b319e3a880047c125733e433353d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX872517985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c875b3086561cdcdd553857bcb52d101f073d63b77a9ad307c4b294d6c581. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT65Y2531739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201aacd51cda61c0133e5a2fab23467131426afcb2fa74343a7c533bd84c27fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/INS9W2500445.