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 0x8dba60939da24a4b1be23247b7091c5a9a7451628fef2e8e6baf727eba5e3a45. 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/d46d0941-6588-4520-943e-af7fbe0b97e0.json and https://artists.proofprofile.net/proofs/artist/d46d0941-6588-4520-943e-af7fbe0b97e0.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 0xe43a380557701aea7cd9329bdaad86ef2e042aeec515744826efe23e49d3b25e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2190397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277a489f0756252ec9c622bf860c2628ea732a619b1e78307d4f8c3db79e097b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2190399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e0c25707892f63f68e0c336ae452927e40fae7cf22675a6db312687df817b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLM2190400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad42f2985dea1c16192eba4ef8a511b7ca8805409586fe7738d54e5a991178b4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2190401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c1cc0a7b78a292767c707a759ce90a9879cfcf699fadcb1aa9d3ddf1d9d211. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTVM2202130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8748d4bfb0d7e2b88d380fbbdc8ab8e70b3cbeb36c602e97505f12faaefe272. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9K2460813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488b2245732177a306041adac64853643f4f7996f0832e3fea6aa67ec6942c9a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:12Z), 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/QZMZ92572791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0c1e7bf5a450dda9c60044e3055b07aedf3ac3a81ba6231bb956e57d97787f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZW9L2423049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996dfb3b663627db179aef47fb7b4222e423f13866a1bd33844be49e0b9a3418. 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/QZMZ92572792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc4ffd5b0214c50eb1bdc01e00fc5d248cf89c7e5ec2064b544659011564f6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMZ92572793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bf1dd1172fba692043a0964d8f91b1f3896903fd6ba230ae042f77e9b2b56e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:35:57Z), 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/QZMZ92572794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b12a9d5804df3d6f51aa2ad9a1c6a1d138998761b28d2536718551d00e5877a. 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/QZMZ92572795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567133ce395de64c7a47102d43e080612da9826147cb56604e06507710b42972. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2447073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c6512e304b203c21ef97c7de16e7004ab524da9cee413f9d1650c5d7835a42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/COA6W2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4da5266ba86ec1aad6c7e9878ce7ef14ac01b12d6834d20fc9088da9292589b. 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/COA6W2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b60117f7945b4835bf97d3f4bf09b0b0287d4d3ef545c87646582bb322b086. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/COA6W2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e301026c26f701b3cd2f2806b9944cbdc8ba324f08aa67de824134cfd4abeef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COA6W2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb169db322baed73e018f0fcae3ce998a3cec985b896943832c31c4d0d8c10e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COA6W2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc4113829d8b385f6b9ef79cb658f2721161fb4cfe4a0505eddd6ba29f905e7. 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/QZNJY2473063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb169db322baed73e018f0fcae3ce998a3cec985b896943832c31c4d0d8c10e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/COA6W2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c6512e304b203c21ef97c7de16e7004ab524da9cee413f9d1650c5d7835a42. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/COA6W2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c6512e304b203c21ef97c7de16e7004ab524da9cee413f9d1650c5d7835a42. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COA6W2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3a7ace5901f004cc5193a8b8f04bb67fa3d4454662d53ce5e980df8a7f329. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTBB2301757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf5c89c6eaec0374d2dc76a205711313d95230c33c42b1e462665a1c5294b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2304480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38da6e0658df15c60e4b38beb2f29acc73dc0ca52dc0c8b828b74e2d0219cd36. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZNJY2452624.