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 0x3388f529f12030de98689ec7a42488629e0f99ef23f201286dc44fa56a693220. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/236fa022-6176-482f-b914-5212948f7021.json and https://artists.proofprofile.net/proofs/artist/236fa022-6176-482f-b914-5212948f7021.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 0x7cdeaf59edfa611aafaca30c94d4fcb2f0882f51b001b0ebf11c0c8fd1ebf211. 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/QZPJ32334444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac906a5fb2f2e193cfcb700d2abc02e589ed51317c922cd695272c768f0755b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPJ32355329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab55f8d6de0ea9dfd5e68bc8a6d6c942321c366a28fc9c49442aead801b58297. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZPJ32361365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8fb3eb21c2789320593bb73628dde93ac2eae591d5fc4b4a2dd4326c3e9f8f. 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/AUGBT2415985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015188608a03a21b9fbd1ee29528282b00064b1a9911cb9cbe5af1efb4591a06. 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/AUGBT2415965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45442e9b1e441285c206f8d624ffe341fdf8d174cbc5790b7c58d25463de7872. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZPJ32349182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdeaf59edfa611aafaca30c94d4fcb2f0882f51b001b0ebf11c0c8fd1ebf211. 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/QZPJ32334444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e2b729af1faac215488ef2b9a162c259db92b1c90740bfa6443ce1be1b911. 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/QZPJ32344099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c2a4992f9c09db00c10c9222178b38444eabf7d90c037f28bc320d7de0dc0. 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/QZPJ32344101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45442e9b1e441285c206f8d624ffe341fdf8d174cbc5790b7c58d25463de7872. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPJ32349182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657f2d27f272b870d8adcec32a9bdd76bb354f97d34ad34e88fcf15f0d6fefbb. 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/QZPJ32355332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a4b2d7c8167099580030ec2d4db57c03e96aef1b41418eb40a29c6644e71f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPJ32355335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b39ef5030e2e729ac98bc390dcdea7ba2fb8254771a3aaddeaa4cef9b4ed50e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPJ32349188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc53a3d06bbc76a7aadd18d9e8d088ec13bf88d0729c3c7edc87fe8cbd7dc12. 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/QZPJ32353862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b146279e6eb00efa64a3e8e97b992da60fb68763205d0934e2531efad12d139. 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/QZPJ32353864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c45a909cafae471539fa7a91f06221511b610c8d29aa0782a8a0e74d145b9. 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/QZPJ32353865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eea917a5db873d7446c5c316fc41107ab1a5e0e6615af8b189af78315facdd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32353866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee1f7b0645fee77385ef1f71dc2f1e224d27db6595fa7ee351ae3ea44681bfa. 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/QZPJ32334428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe83424da277cf0af1e52d9a8eb86b760b92ddc4e7a9643d6cd5890a2c28825. 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/QZPJ32346012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80883e54cf884b2cc4930d46d42488fa3ab5692acb6fe1d80f22ee54b7b403b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32346013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a19c6ca69a7dbdcbf3511c4bb8138e1306477d384106aa80621d33e12bd47. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZPJ32346014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1651d284139439da9ad0725fa3c6913abbc643b7145461702826e860fc3c4259. 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/QZPJ32346023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8d045507acedb02254ab87bbb4ae3add6f225c64d72d41809d9be2c79764a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32346025.