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 0x9afcfb013c52df5063ae3760244cd98bb9d11ba4ecec826e7441c7d7a3d0ca1f. 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/1e87a5f7-4eb7-47d3-935f-aad299c3d37f.json and https://artists.proofprofile.net/proofs/artist/1e87a5f7-4eb7-47d3-935f-aad299c3d37f.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 0x60ac1ed4fd9322aa3b6a9e0396776af93fe6fc66911ffa8f9943385dbcc1e423. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZRD92303240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d9672e7cbc147cde111d45ab01c967833256387a9b456a5ec0bd95afa3cf3c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USL4Q2146382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b92efb02c3c2406f82c66b2e1960be1b1c21f400989486e97362c17de8849. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ42233772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21477000843ad2d994ce7dc1b113221748eec3b2e2e97a79393fea687f47669b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:12Z), 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/QZRD92303379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b92efb02c3c2406f82c66b2e1960be1b1c21f400989486e97362c17de8849. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ42233772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdf6774cb7fea204cc1f1d81671bf5a66c008b9ccc59f253bc65ffcfb8b477. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZRD92303814.
Your Daughter - Acoustic Wedding Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da9f597b8c359044fe4b8361ab66374c7df457f89de1d666a8c733a13cfaadc. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZRD92303699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f492df56dd74e6584841694f0c909dcaeb8705b8c7d69446346d179233ba4e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZRD92303700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6ddbff9327a302e5597af27a5c7e3df3fc289555336c5b284a4bc1aafd9dce. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEQU2268142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b92efb02c3c2406f82c66b2e1960be1b1c21f400989486e97362c17de8849. 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/QZFZ42233772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d9672e7cbc147cde111d45ab01c967833256387a9b456a5ec0bd95afa3cf3c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USL4Q2146382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6ddbff9327a302e5597af27a5c7e3df3fc289555336c5b284a4bc1aafd9dce. 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/QZEQU2268142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b2d87308f84e85b76438847d87d0892e860d654fe27fcc3d934d3fb17996e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:42Z), 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/QZEQU2268431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d466a3da82cab814f2652f4bafcf9776ef2d33505b605551e5ef1ab1cc582e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZRD92405503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b08bd316b5fdd7b24615b1566ac3e6c1c9e2fa734fd8f2c5c775bc851ce524. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZRD92406416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0da558ddae07590cf22c527003e70b954e5b2b887e6e3b3b25fd1488102276. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRD92406088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d466a3da82cab814f2652f4bafcf9776ef2d33505b605551e5ef1ab1cc582e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZRD92405503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6ddbff9327a302e5597af27a5c7e3df3fc289555336c5b284a4bc1aafd9dce. 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/QZEQU2268142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d466a3da82cab814f2652f4bafcf9776ef2d33505b605551e5ef1ab1cc582e. 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/QZRD92405503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b92efb02c3c2406f82c66b2e1960be1b1c21f400989486e97362c17de8849. 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/QZFZ42233772.