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 0x23122dc176a29f0f513c1a6e14f48557e0d958049b321bc4fa90145b278a6184. 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/d413e1c0-7cfe-463e-a8f5-82f63a3acd71.json and https://artists.proofprofile.net/proofs/artist/d413e1c0-7cfe-463e-a8f5-82f63a3acd71.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 0x8cd3a8d860d3bf2ca559431c02b3e796fd7061a04f9fbdbd886b8af34e625464. 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/ARH312300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d74236ff3f5a8ca3d66d8bebd8b9a093de9ffc131f201b9aee55348d88a6de. 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/ARH312300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6959eb9cb7de4ace3300c34c092ada3b3cff00597ff720a2d43f40992f698838. 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/ARH312300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3324f899798c5e717752d86dcf0a2a66ccfaaeed54a22427af9d9a3287be3bcf. 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/ARH312300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888dcb3d5762d0e1025c617d1770d54cc514bbd71fc06e4fa316f508fb1834d4. 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/ARH312300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94588351d31c2a5900f2c3a0bc4fcb81f176feeef4e0cfbbe379fd312ddfaae. 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/ARH312300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0317425301b55a2ae8f27c7f5511db4b7e819ed51e774bd77c0dfc74b7c2e4. 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/QZHZ62163235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2192435f5a2bf008fe812d0f6e397feda2bf65f7cfd916bc37c757562d5896b. 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/ARH312300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438b6386f6df98b34def2973ad65a48e59b200b528006b4a7a21a031a5a42dc8. 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/ARH312300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cc8d86051a2c7d182e335db8235fece708e97ae4f1b99dcddf2a90062bfaac. 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/ARH312200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa987c28ba7216f38c0b3e0c0f1ae33406bd3467a9e7897d4ba147bf43a1ea. 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/ARH312300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f6d2280813018199bab2ab2950d37f7a8b92026ec4006e9d6788a8e8dc5478. 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/ARH312300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf06a5cd3300fb5345526eba0c34f33626e89bcdbc88631214e7685afd4caddb. 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/QZHZ41910559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa928543331969fba86ed058335e116a17b1d4eaaeba7b385a8004e12382cf396. 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/QZHZ41910560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a15548fe336e0edc7853d8ace1ac7dd124ee4d46e6f0be167862a64cfcfce90. 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/QZHZ41910561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bb831d19178230d86b60238d7ac318e99d4da64b8d34992f0f5a82265423dd. 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/QZHZ41910562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e885039a5a86d04ba9e484779a8905bc3c65aa36b54dc713bc59a4a90fddf. 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/QZHZ41910563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cf351c592d358d6c0543695eb2c4f235f19e7a75e7f7199b6d3829f57f07dd. 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/QZHZ41910564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13619a1af94ae27c53546f29bfc570ff5901307e3ee9c651145e4196057b13f3. 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/QZHZ41910565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab6616b2c14e37e69471d466f7cef6bfef6666b0c6f705dbc5da0cecfd73bdf. 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/QZHZ41910566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde4e1dc0b472bb30531feabd889c17ae41608882fb5dc9c12ed31ea4c9b8b1. 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/QZHZ41910567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae97e0f844db0889e6445e9ada3bc3b14833a5f0eacc708077efb191abf9f76a. 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/QZHZ41910568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db7e7368069e7afc458a331dd316b08ba6c6c9a66d23ddfd06d9541930ccea. 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/QZHZ41910569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a72ca4a031ea6e64082ce53bed5b15c35df549e44fc268d325247eca76a019. 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/QZHZ41910570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556d7e892eb82cf7c0e0c5fa2a1ee2d13457c16d13d3edc170bb0ae692262330. 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/ARH312200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cc8d86051a2c7d182e335db8235fece708e97ae4f1b99dcddf2a90062bfaac. 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/ARH312200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0317425301b55a2ae8f27c7f5511db4b7e819ed51e774bd77c0dfc74b7c2e4. 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/QZHZ62163235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ef551a22acfdcb993e1b626a60c1193df35dfeb4287e19fe9e34d74bc4275. 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/QZMZ92018184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34e755d7649413bc7cf624903d4b323a1bc0ee7fbc3dcd0f0cf9dd2b9ad4049. 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/QZMZ92018185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8feb1b27c529e3d547ae5fba45456e3c0cfe10c7fb2051ee3849e2a6f5e4c66. 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/QZMZ92018186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104fbcbff497b92e48c9db66fbca89bd10b5fc0632a47cc84dd5214e35360856. 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/QZGLS1986262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd977572ac034c8fe5d20593ad1540080bd99ae7a31a5bcff16dc6a65ecfaa8. 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/US7VG1859876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7d9e89754289bbf027d9772c39b7c18768e6e082a5c76aa59215d506d7b123. 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/US7VG1994863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a009b95e4cfb5d35f41284404dcd576c008c3c71e316b050056edb61b7646f7. 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/US7VG1916705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9d2b77d03eadf3b31cdae3ace5694d30b6568ca983cea2c611d084d1eb76aa. 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/QZTPX2488344.