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 0x6c8591b97e57d254450918bc4b61d61c6a5cf71ccda9c35428a91797da43411c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e5aca47-18bb-486a-8799-4d536c337b89.json and https://artists.proofprofile.net/proofs/artist/6e5aca47-18bb-486a-8799-4d536c337b89.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 0x36891ad29ef5a24121815a08a211a9a99235d2e4d82adfc8905098a924af2cd8. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZNWT2233236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7607c013363a51cdcb370a7237b6bde5c4adfbd857f9d0291c890cbbb63ad27a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWT2233239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed95534f8cb7dbc3a74759bf36e314845e1b3c7d35b85f700fb84ad96c1e899. 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/QZNWT2233241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23dd8a489d23378da3a3c2e054c7b00f8fd558f84573716a97f69ce4f914246. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWT2233242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c1c8e4b894edb95b7cec611f48a3614e1b8624a5dc5be539da6e8ef6de9e6. 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/QZTAY2283294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8574372d52c9c263abee4d3b270c159636b8bbfc2d54884d02c02469cc318f7d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:51Z), 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/QZTAY2283295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07d08b272427df748f86e7136eb899431bd31c238044dd0fa3f32becea4170. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZTAY2283296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe808844e929127ba4904b75e07efb01e56ab81c87c2e2a6974bfcc1d11ab4c3f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAY2283299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536e548dea3eccad0885a835544050efe4249cb669abf0206d451c6e98597d5f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:48Z), 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/QZTAY2283301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc9d19dbab29d2d25b8a38465e5c9aebd04f5f454a332c5b0c04426620cf7b. 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/QZHN92379371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514df97c9fee9969d26077ce1e826978a4317060f21d456faa7646e98e24851a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN92379374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabe326c93da459947168d03e5287022876c5dff25ec1d45cc87454038e6fb81. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN92379378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012222c0ef79c26460460ad0501e93ef8ad4c64a505567331d08561a6ec6aff. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZHN92379381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28aa2271562fa3b1f58f977d6cc728fcadcb6883956f2ab03433e84c877c1c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN92379382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584086192ca2831a43737daa5496e8bb9fa0a4335b0d7933bb4cba91d8ad6faf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:40:48Z), 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/QZK6P2396009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46ca2b3795060c7c24fe4b9b3005fe589d615d117be57ec519780cd59de4822. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6P2396011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64c0d30fdad0114b08ee54b25338d085badab9a8a0bcf2de49697fc4188fabb. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6P2396014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed754f6de0dba31345516ab6561c74dd845a0075c91f40ed4973f308d97db763. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6P2396015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb404cc9e4d8fbb7aec53545112dfbef3b57c26ee6971d5b821f669b805493b9e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:21:11Z), 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/QZK6P2396018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcbc936e5d267a0c931af73c298e739298a0164f13457abca5eb9621f3f793a. 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/QZK6F2309268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad9ca18c98ead462173dde5681101b5b1b05dfd5b4d9b6554de1d508f54503. 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/QZMEN2374877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a71c6190a3d96805359e457cf75f2e9d7cc27c9a4136525910af32bad926bfc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEN2374883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964654a8a1aace7e68155d93b715d0db6ebb7eb4c4f09a573ff39c42354cd180. 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/QZTBB2406945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee74c3e0b3b609c01f6bec4a2f54db6c7b9224fd26c96a6a6f06202834ceef5. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBB2406946.