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 0xe48a2f5f2ac93a81b3184d802624cf293fd707146248b2b0978a9594c493fdf3. 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/c2b53484-524f-4473-a6a3-c6918d433fdb.json and https://artists.proofprofile.net/proofs/artist/c2b53484-524f-4473-a6a3-c6918d433fdb.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 0x57f7d775c0ce10bd80cc43034e7db54c3d709aa52c5db42850b03d8df79ed5e1. 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/QZHNC2392983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc2bcac9d927658881c2656954abf2cc706ee9235e2b603289c2578fe98ae7. 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/QZK6K2316964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59adc0d47f7b60f622cd1f95b962e943ae2c96a0498f70458dd0191251925ae5. 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/QZK6K2316965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6949a9c79642a7b9afb160dce8002f46e4262003b121d8b05a11fdb862b525. 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/QZK6K2316966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd44466ccd92167e325c6f62ead605f93a232a4f8b1c1a0d459051ddffb97ef. 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/QZK6K2316967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7ef38fa296c459e555d4683c3dd6377ab48f404163ee1c3bf78eef2d8898b. 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/QZK6K2316968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c96885d426aadb162b797c3dd21a1978ef6e7ef5a4d27dcfcc0382d567ae98c. 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/SEYOK2109883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed8946eee3da2ebb6af19169717855535b0e915dff1b7f7cd159020a644808a. 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/SEYOK2109884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49cdb1b4b9e4a6173b71ccb57959c45ad8da125af8a6921affb6b4172030c44. 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/SEYOK2109885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b8b4548456348428b82fd2eb81df0d38e066ba95c4cf26ddca76de13d6ff2d. 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/SEYOK2109886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243b6047a4a9aaf5f24f372c1d35a9aba923be87978cd207f86f3e102eb0748. 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/SEYOK2109887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e3ec25e76a5e8df0d6e1eaf2dd1ce8fdac6ca8434bbeaf458fd9074b85d99. 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/SEYOK2109888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a3d225e926c2e224f6b506dbe7a2792c6bcf4991ae6db802a87b6c39856089. 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/QZTB62331701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f7d775c0ce10bd80cc43034e7db54c3d709aa52c5db42850b03d8df79ed5e1. 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/QZHNC2392983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78065add984edd4fab4295ce835e401be558eda8d426bd1b7995a6d8da8a9755. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEYOK2305842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9b0b5167d3b4410c0a261a4a3e6b87ba89dcb2aeebe610722fb6cf7393e918. 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/SEYOK2049904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4625783de3d6d29278f1efee447a39cae054444b6b4593583b2ec9d7aeae77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:03:45Z), 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/SEYOK2044961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ab41932d18bf600ce885596824befe80dcccd7ac2312b07b36f16afa82636f. 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/SEYOK2044962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d7933caafdf8b217cf9d104e43d9b7020b5855664ac57c3c53f2edde143dd0. 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/SEYOK2042696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77596098d24b20e022d8e88b208c8f56e4fbf3bcb41cb790cad85a6ab3bc868e. 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/SEYOK2042697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710ceccaca592363394f3a16f186cfda3e4f9863f001b4d2b9dd729375fe2903. 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/SEYOK2042698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf5346aa72a8e626c1d08e1da5c891cdc232359b760747e7706f066f5be1ac1. 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/SEYOK2042701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad570f4628b09346f38049d45890ed5478360c46cfaff09c58c6170fbcff144. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SEYOK2042699.