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 0xb3da81ef26683a3b23d847d9f9d5541eb98dd10aeb2a734f48013b3ed303e8d6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c35998d-0361-4255-9d26-e6c42159a267.json and https://artists.proofprofile.net/proofs/artist/5c35998d-0361-4255-9d26-e6c42159a267.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 0xe48781fced07a4aa3462f80e6c0f6e88da3c40d14ab0504d1191c14beaac3c31. 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/QZWFQ2539723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e2fe9b5eb5eab4a1a6f5ca71a3f3b69a134605ef1ed37a1712c52b6b8307b9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFQ2589796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dcf65d3a72016994d2325fe34f952dc643700dea9d1343c56ac6d5bbd39bde. 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/QZWFQ2589789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1564ef66d5045ecc70193b346e10c4f883fbb9c677dd45777b7c6be0291395d2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFQ2589739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b805e363ed7d03a1633afeb8bb2e1230c32f584ab33c41792cb06d32e34449d. 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/QZWFQ2587002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5658f774d7fcf86cb748bdf7b44aae546d7d79feadccbcd10b83f3de68a1a3c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFQ2589776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea2bac01f523336800f6659a229219445c3e6b9deeeee5cdd545c04ba688b25. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFQ2589728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a0f6d6069d275a589a486969cafa46edeb4d84ebcb4802e1442a251207171c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:45Z), 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/QZWFQ2589794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb70a3edca6fbc41908e11fb739f36591b8ad00e8906a6900fc09dc2231917. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZWFS2537538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38e8ae291bfc56b343aa9fe4f99755bed6d66819cc31d8153b60383424f0395. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFS2537556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfda56ac2d86f455b120f5d8d999ad51a6099fede92df073d159446878dd5f40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2537512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38e8ae291bfc56b343aa9fe4f99755bed6d66819cc31d8153b60383424f0395. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2537556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c45075e6735a571281071d32c820f6af005e079cc17f9a2e309a7c68b7e8423. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2537496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c8cb4b670cfdc49ef75f56b0575b3f0e9e1683345e793ad77ee9363fb8f14d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFS2537429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054de777f595ed38b38576bcf3591d148afb523fd822a51f50c4343e338072e2. 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/QZWFS2537492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadf5f5ba8859d1ee71860f84b0b557df591808c940dac01edf448b09d1411f3. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:42Z), 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/QZWFS2534163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2d92f172181007c726ed35e976c70ab0c97d330a38de26e9d7620b1a1bac6a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2537476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7d4d60d21ef8f1a0174799cf71d5092c2017f357540269c7def3a194c5f286. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZWFS2537462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b76aba008653e2b9b11a8eae347b0e630b6f0d1f1395adc01a4a5633ceadc5. 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/QZWFS2537511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ef03836a49743946a6d71025c9c79caf361bb5d7c8296ababab0179f6c3a68. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2537519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee58a5b8e5a38a7c20530603ecf52502f00fe37af6b45f87abcdc7e89a1110f4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2537460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4116b955911caf37a283a9fcacd3aaab1a086813f884431fd1c18981d561c25. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFS2537630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c676eeeaa8c77be9120228a4dc3d3c5aa9cfd045e51fffbc8bc407749f51c1. 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/QZWFS2537493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fcf1f77e0ceff3b7c4103c59160d85d4314071299eab2bb5c2848baff845a6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFS2585361.