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 0xef63a5a9b546b9f4e921ff829780528ed2cf607e7f81161b4a1ff88fa5e0fd2c. 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/2575db8d-4210-4bf0-b40b-ab09311bbb06.json and https://artists.proofprofile.net/proofs/artist/2575db8d-4210-4bf0-b40b-ab09311bbb06.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 0xcbfadffa55e8aa785723be6226b33ca881a03b442441f97790f8befb2b3e3efe. 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/TCAIF2442763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3065d766a40e6271a8206da9d39ced08aa95c9c0dfb59b4118cc3959e12e4157. 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/TCAHQ2342145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127917f4356fbd2e6121ff524b71179d23670e16981e6f8da26c829fd2033bcb. 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/TCAHK2344286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb1d92e5614d015d26e5c727f2ea3f455904998a836f7ae603d4471aa4bfe2. 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/TCAHE2354553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837871ec966e3c457aaefb466316ffd7b6065af61882954fb493866518ac1eb1. 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/TCAGN2245168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3d0676f11f3a311222bf6541f3802b4ce2c1fd051d297fc3696195cbfeaeb. 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/LVL152201325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddf1430e2f1c533c8b3988f880d3972137865d792510fb9e1a30d0e41b05d95. 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/TCAFS2195419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f48586c758f8fdb6ba727d41ed7998c8608b67c0cd1805f346d73367e0915b6. 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/LVL152102610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f606e174ff7c290736c57195f44f0596cb7462d6df35482f7b29bc8bf779cd. 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/TCAFJ2155127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d392395e644d041978929a698558ec0bf3525f2a68abb28380185fc97aa317. 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/LVL152002446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5588d1fbdb171648a8d507218550a768812e20d706f098d50dedca65146cccf3. 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/LVL152002445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58270239c48120f19c4ce294c5a8bb266bf02027b9c92964a66c0b1c75bbd2a5. 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/LVL152002444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc2e616f82cfd2099c4df723057185623e616b09e31898de8c2b2c84896a4a4. 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/LVL152001796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc782988f878bcfe2db2b1e4931703f32b3978b616da939e10348b8f5eb5dc0a3. 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/LVL152002443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03c381ff07f50e01a5efbd39ed6ccada26d3c8a1d4694f0e1d98896c9ea0925. 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/LVL152002442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7c47a81ada85732307dd56a3401cfa7f8d2179bec628ddb300c3e9a462694. 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/TCAGH2265014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787d83c186263542f8e042afebbebcf850eeb95a3eb53a182de2de7e6f2512d0. 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/TCAGH2265023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab71d69fb6b675bd84a9f7ebeae6833bb1c0d53b85f56c85baa6522987ffbd2e. 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/TCAGH2265024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0adc836c22ba7e5d6f92783a7ef05fa87514861c07d8afa93a45931137f9cb2. 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/TCAGH2265027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3c3d4b1378b5ba4f45d436328484ef52b50a6e990be5cc9eb71924b9802c7d. 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/TCAGH2265032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ea854c7d2bded0280355d3ebf5c76e1067f0545b576e6312cb9fe25bdf0bbd. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/TCAGH2265033.