1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe940c17971cf94bdb527d6d166650197625f938d5f67719cc7a7bd0a4bacf195. 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/0e755ac7-3d71-425f-a458-67c1049eef77.json and https://artists.proofprofile.net/proofs/artist/0e755ac7-3d71-425f-a458-67c1049eef77.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 → block OTSBitcoinBlock must exist at that height 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 0x6fe6a52701d38c1017d0002029d8949c35dcb58d184b6fd360b0dccd0b436de7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:46Z), 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/QZDA52106310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634dc79aae46dc2392f06faa5fee6ee9c445c8367d98eb68a84a02e3090e0c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA52106311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f46f9fa8233326d34fc365a1e60e7e74873bbe20293ae366659a3fb7966062. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA52106313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0229e6551f3ddf5d0d916cbc468afef3cf91e08d4df6a051f8b3b1812ae76fb6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDA52106315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b376c32d939ca791dcd49aab045d4af28f2b495c56a6f4748ff802ef4d7baf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:15Z), 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/QZDA52106317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f86bdfeb5cdae69da168c280468c15358aeb44eefdade4f2d7b8505f721b808. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA52106321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac758170e944e928bc5884e782c25d993035a6748adb2fb48a1ea2db535658c. 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/QZDA52106322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9b855c22b5f9f94c8f39097cf63397742f23247f9c8a5389c2542e0ac347a1. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/QZDA52106323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beb6e1b655e6320fa21d57b62e97175724ca4d6d6bc3a0b9be368f12adc4a99. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZDA52106324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893e40efb77a1ad33956f3fa80806008b6b814614c398e1e0d56dc00dd2e6ef7. 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/QZDA52106325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee63b936d9ed3f338a9fd0026727f36fd9fc75bc68b1dfc0106ef524fb9b21. 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/QZAMM2121181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30f1e2eeab8379d5ae6caf904dfbf2c6309ef380c8faee8fd97896ae7c5fbff. 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/QZDA52106326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81e357591c23398aac7df449209edec1f5d39f6c257a65b7c51b0bddc440093. 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/QZAMM2109819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3836d11a125d74029d6da6483905c379b49b63b18802809136d19ed7dac17d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZAMM2109820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c164194a5188b9370d5ef391d82c5546cdcd4755dbaea98e5a83c1ed08b47b. 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/QZAMM2109822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290c956ec64dc503baeeeb7eaa9d65bd178ca87aca9aa93c27cf756e4d880d40. 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/QZAMM2109826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fcbe516a7f30c064f7740984f710061a56a04373f6fd1f4a583d22004b10a1. 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/QZAMM2109827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0299ef8373fa0fcdfc5d87c34175a123d566cbe509c5537972c1f919a8b0d85a. 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/QZAMM2109832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd15831eef91500b00440d9e138b54a0c4f72e3ce98a0c15e41054978acdd9f8. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/QZAMM2109833.