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 0x1670bf4dba687f1be71c42e6beebb4999203ea2347007faebd4d411c06021878. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dedad300-c88b-4284-95a9-bffacc339a59.json and https://artists.proofprofile.net/proofs/artist/dedad300-c88b-4284-95a9-bffacc339a59.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 0x623dabdde4d96c796a204290dc165d26733167afb0121aaf74c4314a8c70a49d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q51900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ce2c7039aefd77c3d18eed1b5454d198f79697f923ce0422c63820eb983402. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5Q52002883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552fbeb9f11cc2d7c18a5a0d3b93cfeb3ae97ac041e5f080529343b9f79a2683. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5Q52003137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0187f8fda4d53254c7fe03d8257ec25bbc7c3eb56432e63100875d495e3dcf. 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/SE5Q52102280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea513211a7c50c71804883a12f3c731fb122077fa5e425d58c0d61377050afe. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5Q52102227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cb0d02699b8fd6b9b5159e67e17e21c86619c241f51c9a6d314b9afc17ceed. 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/SE5Q52104326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38a0457ec93242e284b137266c1fdf9325e5e63fd7cb9c32058265f9b483da. 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/SE5Q52300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f09299085ea36ef5f627181cbbb9c2b465335ec78719b6e0c1401b769b5730. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/SE5Q52302338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3e4be3993873ce0b0b96045f9eed5ba53f03a43249f5660349823b9277fa15. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q52203581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1400e90b95133ddc2ee9f010ae2a7fa09bfc89d311bae72e722ca829dd72ab1b. 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/SE5Q52304711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99288c85f9256db40045d4a406a6806f95b56d388dd4d82b2f2e48a81e9b0c58. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q52400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a35728edf72ee1cee37d3a8fdaac55abe603e49dcdc77c90b3f882c1dae7ad. 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/SE5Q52403593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc112306754720ba3e746105e4b8f3477f138ebb4aae17727eb102ba3048bb31c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q52403516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c8574fdd512e824ac5ae41f2fe3b71dc186ebd3534fc0f856f6026cda62549. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE5Q52500862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0716babc7974ec21d35418abd9b6087a7b4ac67e2242e801595b28644bb94. 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/SE5Q52500829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c81af5a450a65bd416e918146e476874615a1814ad954768404cae0941348. 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/SE5Q52003140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f54998fa7dc8cd0c8d8735eb590bf81f6650c2ef81f5628a21f2eb6f7b3a92. 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/SE5Q52203234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc178c47e6a0bbad2b819a26e6febd83a31d446475c47c1bf397c8d5a404ce305. 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/SE5Q52203390.