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 0x26c720569a920b90219a3462d6f1f7d84e1d7699ecf17c54a4879d86160bedc3. 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/e66707d5-6a4a-4b6d-8ab9-68767856bfc9.json and https://artists.proofprofile.net/proofs/artist/e66707d5-6a4a-4b6d-8ab9-68767856bfc9.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 0xa1b1fccca0f15c5d88b356c7861edbb11981e28ba200a49fd747ca0d54df4287. 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/USHM22461696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34665832222fa1ec582f0713b83210f131095ac3ee30913d62ec3f0abde6372. 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/USCGH2435417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298044e6a77055b87b80fb50fca65b74049abda4792125ec272dfe73b62865f7. 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/USCGH2435401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6566bfd53dbbb37c4472ba09dbc755ef33ff0968874a5067c6df179b263e8b6d. 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/USCGJ2368770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414d8e5e61e309ee0fb907e72db78b6afc5bd52247a72d92887c4c1871a1b97f. 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/USL4R2213494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da97f1430bff7de58fd8890169dc915841b25d45d74ea77c80dc4ea232ebb0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDY42235207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d110536c45735e8c5bd10ce9ea3a6471ad7d54b9037d3335b8556545251ca03. 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/USDY42235208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09d2c9ea9ace26abe4ca1946d763f98aabbd13a906b2b134030dbb0aa1fdaa9. 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/USDY42235209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645387b586ce84cf17dd4acdf730e6ada0780201e890c948aba5737bbc9e7b37. 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/USDY42235210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe1f0ae5b9e3ebc204d92eb5ebb019e1d3591c6514b69a88bdc97e5ad57b59b. 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/USL4R2120735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f99c14066f4709f1b3403d6a6bc58c50dfa6aceb2614b97260ef64dd47a969. 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/USHM22176349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e58c7c1bb7b6d1e1697146e4e78df6f81a88829326178a4a5e06df012fdf753. 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/USCGJ2102496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78713f754fe3abec9031929fa0d8faef3487f9d8c8d4bffab84a1bbbc6ea67f2. 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/USHM92067744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e0fe79a97457db2682435270f62b8e01d07eac67468e03a1d5f16624f61aa0. 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/USCGH2089121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2239100c5e7f20c59a5a64681c9d732aaa618128541ba990fc7d2fbcc9fadd9. 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/NOELD1802021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2239100c5e7f20c59a5a64681c9d732aaa618128541ba990fc7d2fbcc9fadd9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOELD1802021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed29bc5a538d8e1add96f35ce719ff4e490207c3c8f760167d48041dab0b585. 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/NOELD1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102cfbee330917d52b00f346e7ac1170b0c0ca2b6b57fbcfd51c61b4d74e7fe. 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/NOELD1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e634b38cac4259dcc8f672edf39ad6fe1b36c59dab4a1bb87c564f21754b3e. 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/NOELD1801030.