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 0xcd03da61fdae53266babcede6a1ee52e5d5b4ff0d0bdc97fc3a1aa31267dbd5d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f8f7e47-32f3-4e8e-ad9a-e550fc2470a1.json and https://artists.proofprofile.net/proofs/artist/1f8f7e47-32f3-4e8e-ad9a-e550fc2470a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All the Words I Thought I'd Say: Live from the Loft
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 0x6e640f4a94b53f81635fafb16027365853342a17b2b5408b2d92a41c457d8560. 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/QZDA42260856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a6eb4a53d0030610641660811b9109cf4fb4b82d24a8a2786cadbdc6794714. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:52Z), 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/USL4R2432460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b83b652d14c030eeaa431955a28eac4c1bc30058be0d69cbac982b2e23508ee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USY242477576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a6eb4a53d0030610641660811b9109cf4fb4b82d24a8a2786cadbdc6794714. 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/USL4R2432460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b713627995b28b83d04506bd2e8885da1570ad203a602389df3ebbc75e9148d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM92286024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc455173fd9e5d3864782640c843441f710fb0f0821cb23e694dd0f3cebbe96a. 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/USCGH2586921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39c1437f29f602ed83bea5ecf37a533fd8f3be3701d29920ec595b91c7fa11. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USCGH2586922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b83b652d14c030eeaa431955a28eac4c1bc30058be0d69cbac982b2e23508ee. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:31:32Z), 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/USY242477576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d23e33b2a0d26052907be469112b8536f847bf583fab77b14ff037c69f7bc7. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USCGH2586923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc04b58b7e6b217fcf543b3a0d86c317134b5960bf267a8fe97931291d06d180. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGH2586924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a61191f2a7b62c2339177adfba808b8c8739222e23d17fa3ca490447b6527. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USCGH2586926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d287d68a5313a80df4b79f03b289b00c21d1d08e24b85421f6012f2ebf46868. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH2586927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f2e804abb3215207cf2828943ac7ee702d79791e03ec3b092c81fac7758723. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDY42488662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf822cf28033a68692a05df11b143f3e726ddab588d12b0e7dba2e5247803ef2. 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/GB2LD2010123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01faad3b23a6373ba8d2130f3b54e0618a087301e717005636a7a3fb4b1143b. 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/NLT2H2301120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0276f72113d23e3975c809d143a605ed2e1ebd52965f7b0237fe08b09a3de41. 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/QZTRX2354746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74424ad4cc72f41a39dd2b30302951f586e130a61950285b351209c8b783ca94. 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/US38Y2314696.