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 0x518035387bdb875e22da63318a11093767d10193a4ef0f1f25a57fb45267f4af. 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/27ac8c57-a097-4d62-bbf1-7bcd0ce61087.json and https://artists.proofprofile.net/proofs/artist/27ac8c57-a097-4d62-bbf1-7bcd0ce61087.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 0xd4cf4084bdb54005c666edac22b73c08f53ff897b3cc30ba54dc00695935c956. 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/TCAJS2569299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f63366894847e6e6447eeb59a52ae17ed4a93f3666221d39d53bd949a1a284. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/TCAJS2569202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cc4d46534fd9ef336f0dce0b3b53205118a2e37773fd379d9b6e692aff7c37. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAJS2569468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75babe6968e869f67f5d6ae065a7892d609df5d9c128021dcb562c26f6066f9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:30:24Z), 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/TCAJT2569237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32622972cfd6b251f4dbf1ea840201faf365990d3f849e6c0bec3d5a7202385f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAJT2569433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e0c9dba4f1a3e60e89de7cf43cbbbb71e26c225ba4599de2e1fc7963630ca3. 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/TCAJS2569323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7392a7eb88d668bf23a047bdeaa7891ed69853fa24361d9cf5d7ce3c1b01ea. 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/TCAJT2592267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19b30843450c8ee0539e347234f92384c5e8950f6d6ef6b4325048d234454e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJT2592245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1562513c66911fb8d376198cb9ba041d0de610b101f3cfcaf6eb2c01c180812e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJS2592197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957277b209dd50244b4ba0b9564305f5e70952e3977cdca476f43c851fd066ee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:08:44Z), 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/TCAJT2592148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81d12a0d19f646ba4a1f71751c320a549f504136819ed90fe0c7e0036390168. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJS2592131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4734faeb671e9eacea54ffc2d1e40daf7852cd3de675a3da5671111b799886. 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/TCAJS2592281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55d8639416cf643d0b8a8202d6e898f43f7a32508897350554937f9325eab4b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAJT2592178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a7f5b23ebd90de287ed278b5fbb255913ed8fdd0aaf8ad44fc178c6dcf7ba2. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/TCAJS2592224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba456a6455048b297945b156391b66db6ecc979500108b4b0e624052e7da862b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAJU2537667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2d784d9a6f98ce40e7a6dd6e79093cd0db29e818a9f77187c93372267a5209. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:26:43Z), 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/TCAJT2537708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c14862b53ba97adc13aaa861b6ca4e0cb4b9e6097d9753d1b9abcafb049a30. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCAJU2537726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f29b1511baed48b0aa71d94053199b8fafc698fa77d93ffacc8f335bd285b7c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:03:24Z), 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/TCAJU2537829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ca5ee6adc52f2950e9d9c266deb3f41e4794cc89c3ce63f33100444a595e96. 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/TCAJT2537612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6875bc0c039d64277ff5140307645f127e2f2ba3bed8e33531db07adbef06415. 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/TCAJT2537816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a5870d9609e498824a123af2fe839adbf27e96a0c52ee9990d2583c9c9a295. 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/TCAJT2537795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e200852b05782c30ad5cbde8d7af796113c305408731573198d5a2b06823c. 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/TCAJT2586765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8847e794f2b22ac8b2fe1911d0ea9cc1a82a47fc4ca4792f5d3e9a537856dfe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:50:51Z), 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/TCAJU2586570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3b5810f04c72c5311ca2223886ad38e6ee4ca3efd203fb60becf998ee5f4d6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJT2586647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062064a9f9d20af23174ad5ad4d9e046feeadb8885c2c3b647b8c94b48818310. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:04:41Z), 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/TCAJU2586810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9381788b10a39eadf663d08b8df09ddefd1515ac650a832f1a3967782831d9. 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/TCAJV2592308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd8aec51127904c168bf7a9eea14d466ff6a51a6a8b0966a4941e6125463638. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:44Z), 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/TCAJU2592498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172d4d85e2b84fea9e6d10e5609ace19afe32e2f06e88fe86dbc3c0e258d0540. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJT2592360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bf17b50c7789b599e4b3f05ca2de22a64982891c2dd9d97f39350c787a233e. 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/TCAJU2523244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e1ca28ebdb9a3a00a971fad2ea7dbc3d1210a09052ea412e33b10790c38f4a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCAJU2523192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37f36ad5f0f71fa0d5f4e42e8c0434ef809dce9a41dc460f1801f194fe5edd7. 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/TCAJU2523436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f3f4f6ea96ce962d97385e5a555b4a156cbd0bd269d099558e992b3ab3b7a9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJU2523493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9d886f8f2a9aa9d2e1c429fb86ce21d2ada36ed5842fbfe4575c4b67b77bc6. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJW2516529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76761efa736772d545036ff08683c81f861d65bfb057a732f4e3fb930997fd92. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:44Z), 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/TCAJW2516558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80fe5f23e0b6bd721930c9fd3e1bcf23efc6eba34ad161314e0808fd9e3af9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJX2516367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00ae81b3230edc9f3975ec4661bb042953cc3ab379612506970f373442b61cc. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJW2516432.