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 0x2cc92dfe183656a50fdde713c8051256bf62e9a12abf1307334c2b4a886e5d8f. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b972e895-deca-4136-acc8-cc2804e23f98.json and https://artists.proofprofile.net/proofs/artist/b972e895-deca-4136-acc8-cc2804e23f98.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 0xc7dadbc451b2d1c94584055218ac57127d50913f2cb28dc42d9f0d30ef9d6363. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QT3EX2560036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb591fcb6980c2105aef9657057e29112eacf88c048dffe22a43bdeb803a29eb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3EX2562916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5130394ad5b5dac7210ebe14ac98f04e2b5ae1cefddcdf524dea3033c03ae2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3EX2562926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf924ef7654af14231cc4791a735f9b39b00afbeb6efc716d847a9a3b40ced9bb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QT3EX2556416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c53a100e4d1b56da24f079155ed76a49bfc979da993f50a4301f4d339555b5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QT3EX2562919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705e7125ee7b7e03c3926f96c11865f71d54cb50f84cc9d91e82c62ac7abdd85. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:01Z), 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/QT3EY2536939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce328ebb1898a2ab2a57aa345e4b4971ee83f55a9cad3ec2b0225d2b8d558dc7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT3EY2539917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb09e84a9574995c18157c06805e50b5c8ec90660c1c8b309072dadd85224bb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:45Z), 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/QT3EZ2576372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf912cbfcc1c50cc75c21252302b201b1a8cffd44f0194780b1b6c7cd122f59da. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT3EZ2576367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25191066443c091d7e3467c18077ec3fcc728fda5ab488d37c84251e27fd974b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT3EZ2576365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c2a845bd8e8f0a0e22831ee37eace413feeb89674793e56f1c44e119030c85. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT3EZ2576362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ca3f4524aba07c1d2512ec346d4b41a19a80fa1e6bf68026c20b395d7f4ae. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:27Z), 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/QT3F22528752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142e04b08f021daa4a5091ffcd099549d6e6f01149d7bb0ffa6a2292789c571d. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QT3F22528746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a38929bc92912db56f4bbc49fd6794463d4f7cfc7f184b0be35ae579d9db23. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:38:38Z), 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/QT3F42520228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8a246fff0a888e4481122dbae9a6435327e41c1ff56f8aa69d88c908ead2d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:55Z), 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/QT3F42526164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e4fda46b3b21e164f0ed6fb1fe5a57b4e37ef1202a28d267a05bc7c775206. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F42526177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c9640fa4f3269fd1cc9058de788aa50df0b67aad0c88bf871956b052e4d92e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:51Z), 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/QT3F42526169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9805da48a51b0e53d9f2e4e89f8794fd1001a7871b01772b6be1d01fa95f4296. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:25Z), 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/QT3F42520297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579bfa7f6dae7cdbd692e80c4cf2a892ae8454f1ce36564f973e9b7ce2525e25. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT6ED2503091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe834ab4ef924e96f9c7f5ad60b89ed1936b70c48d7e1b32ffd6e4432824f289d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT6ED2540812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb001bb57159083854faa5d64f235c434b15e985f2c72722db245465561c742eb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:17:44Z), 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/QT6ED2503090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336a571e96520c0423bdacadd644339dac240e17dde20b2042c27a3792e4fd6b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT6ED2563380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d9d48f6fd53281def95caf55d65fc42bfbfaccfe6d2bd908a9ea58e2fd8c64. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:32:31Z), 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/QT6ED2563389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d758368814e4fc99ceab06da2bddd34ec7386126b44526132264e5ad3d713. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QT6ED2563393.