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 0x756fe7351a5af6c21fb9f7b665bb25dc941f23439337fac0c66007fd27352be5. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/981713b0-3455-4193-b05a-1098a4ac1e40.json and https://artists.proofprofile.net/proofs/artist/981713b0-3455-4193-b05a-1098a4ac1e40.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 0xbc355c2f3decffdef5f0c53759c81ddc77d1dbf07e4533d3f8f75c8830a39614. 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/USWB18700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce043df69b9835e9021f587daaa4227cf7e731ca43ad012070b4e16778e9a2e3. 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/USWB18800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb995a8c28b67f0eef976f343bbc7dcd834bc526c8744f7d58ff787614547fc1a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USWB18600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc99ebae62c6ace71802b26b28da5a18f43e69d7a000efa00b11b4c53400c3dc. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USWB18400010.
Everchanging Times (Theme from Baby Boom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ca64fa59d113070771da440696a55f3718eac5d87ab0a25606910c0cdc4e0f. 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/USWB18700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f234b6dceb6688818830f37341ec33f8b602f7c3772c2444a889f9e1c153ac5. 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/USWB18700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1113e3afe8c6e475ec75a9c0206706d425defdda5b1e54c2b935088c1e53aa8a. 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/USWB19200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220047548c84242e9e45c457ca01ec241b795ca8bb590287d39abbaf55badf9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWB18000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700be4e17a47ca311e666e58c5f58f4d9414d3a1e6719e82a63c8662e67000cb. 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/USWB17800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4748cccc4663a4b3c427614dc5695fa10d98aee6b626a0534df837c65fdffc10. 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/USWB18700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab807edcef466ab07511a701b8d96aefb714dcf671983e485ec02f32866e8c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWB18600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38efb5f7430b58252857f0b9a28c26eeaf7e29cc55b7fbf421cd34fe7cf183d3. 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/USWB18400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b1028f5d9584a00425ee9caaf080812d642b9504b59afa2dfd88a7ca87dca5. 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/USWB10900883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c8362edb9fda65760e081c5ccecc3597b052750cc1c123e36570b5f2477085. 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/USWB10900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3cdd11ce2c0e3c48525220426f19e7d8e1a444bc9ee8020b6daf537dc30af5. 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/USWB10900885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e81ca136014e0e6cdf86123fe021fc6135713c5a9261f18de05d0c76bd791d3. 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/USWB10900886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1deaf07597fed453e0d50a07e53e1c96d96090d357c10d0a9720a9ca8fdc71d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USWB10900887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615c8de41f2beae6fbc1d1cdbda7e8811bd4413f845778dba2e6c1bec89de7ae. 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/USWB10900888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38e6ff97396504ec0285b58d2593b19e9461778ed732e5784d077c6f7a6b361. 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/USWB10900889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a56489f940b9531652cb25f0f8557cff956c3a3c8b8fa6945a0363fe1dfc2d2. 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/USWB10900891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf698f005cfe391d1ccd59e5d7cbc1254348d9dd486486f489e62cef7caee69. 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/USAT21401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e7c7ff3a53431a6e55d82e7374f159539e23561f0b0407bd47ee4b763c2fd4. 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/USAT20700490.