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 0x222b5e30261722c8cb4e074db351fa232893e4e3ecf99e54a131f8f30cc0a786. 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/17d300ca-62eb-413a-8dda-b2c00a4b66d2.json and https://artists.proofprofile.net/proofs/artist/17d300ca-62eb-413a-8dda-b2c00a4b66d2.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 0x6e340b2a719c1072b5a0850feb7d907784eb325d40146725d8bfbd482361b45d. 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/USWD11468973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a11a35312590252ad2997c97d0ec37e5a58ba071fce8e5f8c0d5668787b37ef. 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/USWD11468974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcee8dbb4ef073e82a6d2c4d67f0c8ef100ef27056f5ee581f2349fa1030477. 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/USWD11468975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd277c7e4302c5ec7437ff317a60de83481127daaf51beefeee8172c2d50da9c9. 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/USWD11365173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2daa1810d36b4cfda29ad947b64352c522a7ae3ed28c7a9caa40910256a363a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USWD11467153.
Hallie Hippo Happy Hour - From "Doc McStuffins"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c531eb6284ddb520b2be349ddc0134ed06aba87beda628461382c5ff4de6b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USWD11469681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd277c7e4302c5ec7437ff317a60de83481127daaf51beefeee8172c2d50da9c9. 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/USWD11365173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f87df16b4de2f737a2cdc5669cb388e6e1047bb45ed068fae2ceb87238826. 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/USWD11365179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c640aa617b910356586d36a8dc39254cf373ae961f8ddd968d1ab344b0ed102. 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/USWD11365180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d066b3c0e2c31fd799d9e39c364a4edb198d2a063698e2864b9c38cfa9600d. 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/USWD11365182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a46def1409216f9efe22d56fe29a6ee92b0397d2e323b000e1fc851843dc7d. 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/USWD11365183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ad3ab091995211394c55569f62bb19324f3819d00a7fa43a352f1433efaaed. 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/USWD11365189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7515c37b0eef17bc9a1f3c92e7ec889a25eb0a646bb0511a010ceba6a891fcda. 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/USWD11365187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa015cc08acbb8ba7a5cdeccab3c92f9b191f47b8283fa29e0d42977f7b43d786. 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/USWD11365190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abfab1fc36c67db4c58cee11e7050b8258c2db93aa1f3ebdab64942ad46cf29. 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/USWD11365191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024189b45ba31b17f4502f83b1652d89ff3d5aa24d351c34b8d0e3e47fa94b37. 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/USWD11365198.