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 0xea83ec789930a9253350e092fa3d94117164601d84ce6b1a8019047d2d7db220. 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/d9b6af47-a5d7-4818-8173-718ecf9cf938.json and https://artists.proofprofile.net/proofs/artist/d9b6af47-a5d7-4818-8173-718ecf9cf938.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 0xebd53e4b6e066997b9d488a93dd63777157f93973817678e8aa84a887a188e47. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR96X1928162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf27c5375aabde6740bffdc0866a56a092649d6bf4da49d60a2670955e1880fa. 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/FR96X1949139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c77d6b95c65723d701773eada22782edfaf784b721c8eb4e4dec163dd3607b8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:53Z), 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/FR96X1949140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327e8c4c90601f0f88c74003db803b9623bd59b750c0bf6ebe9a901e89da0fc3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX201938053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8508dfb3d7e836441a835384c6168d7c4cc3475076ad10a497525e060522e685. 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/FRX201938054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe862a4b0713bc33d8e00ef51c3f1f96f52b8b52d18fd0145aa93f64675691cf0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201977419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47e214e20676b96062f1326c4f9f4aabb9701d837c5d4b61966119e620d7059. 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/FRX201977420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387716bd25f78022e249e4bc378d0a63ba65ce2b9fc9db59466ccee99538358e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:44Z), 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/FRX201999424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf1d4de280ee4de79dfb06c03009ee942dffb53d547ca016f33849b3aea3364. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FRX201999425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe824ee61f49b43bd901a18f72e67b4adc56b90335484b1dc470881d8223b7c. 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/FR2X42043135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b71fa72b52778a1d55dcb680a88eb79d881ed0378c7b8dad1d3a1d3d879ba3. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR2X42043136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9e14cebdb02720d86112d89866cabae69554570683a128f43fa51ad64ad64a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR59R2075294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8853e8784147c121e83c7eef2b31c1f770be5c1ce718a4589c1d92eb5d60479b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR59R2075295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c31ed496dfddbf68dbbf6f44cee6306f85733ecd8da9d755251f94375a1670. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:26Z), 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/FR96X2074163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c1ec90526665317ff3c7ee594230da35cadd3de2b1a1f05222358f9d60109. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:26Z), 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/FR96X2074164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e069da0af2e439450b191c783b3f2d0af89030410fd8ba56f933d3ca0133b75. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:34Z), 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/FRX202052887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6447b7b6c5065cf6283b61b83ebaa970d4d19d37b8ef3ada1242a94e3bec07. 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/FRX202052888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b8c6f4651f5ca6cd2e803d7c1b074b5d77576c0826c692417c1795382dcb69. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX872010479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03253746498debd013bb616f4d9ef5f5517fb6e232f3d6dbf7e048e24dc028. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/FRX872010480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422a3f36b36c2a977fc0c96f7efa9249e123639691e35f1acda3006c4b253dfe. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR10S2111243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06ad78a36eccd3d30a03d6e36f4e17fee4617fe37e73258de374258aa5f749. 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/FR10S2190169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2499a8a9a000aadccd00bf9fbf6cc5d42a985f92986543b958845018c6c86. 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/FR2X42110827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0b8635686b793374d5d7b5d55ff5b1f512cccc9675822adb44dccdcaa29c9b. 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/FR2X42110828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95457d30545642efbc648601e076de506970923cfefe87887f8246a8bdc7b71c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA072156723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3234dd8715f6b7cf7d0b2813f7902015ab160c42e8b5273d6ec5bddccbc73f96. 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/FR2X42143594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ccfab69f81aa44cb48fe7d518d807245b6ba99fab5f80803110f4ee3c3e12c. 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/FR59R2191881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4235f662826a1751c72c7878ce8f9f4d83e12a3adf0d29e8d0d5b503f28c8d63. 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/FR59R2191882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca20ece3b25424cb37d0cd3a0008163698a013680819dd47ba2e30052872f1af. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S2275025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2937e1421181b910f8f1944b92979e1079993630b52f096cc6c2f17c5f628e11. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CNYX22104367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8101e4df035c570178955db4b56df7933e55cf33113f1a58a1b766a98ced1099. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:14Z), 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/DGA082264282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde5b86a207e32c8bbd5edc5a1d5e176c26179dd956dd67f326445809441669. 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/DGA0T2421991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d602e2d4fc40ad0cb89a99749f66003a976b663baed1187e990772bfbbb45b2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZZ972303476.