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 0xd3314cb3ac80b6e3c8ccaa10b0f6cbb4281c1b4e163980f231d84c950893484a. 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/75698639-d864-47e3-9027-b622ac8e4266.json and https://artists.proofprofile.net/proofs/artist/75698639-d864-47e3-9027-b622ac8e4266.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 0xcfa7e16509dcf7835b0b2cedeba0762430888ecfc8b2b920e82605db117a1758. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ2090561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235126058d8a55aae6eab8f51ca081a9aff1a81d0b0b077f91fa8debc9b35d3c. 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/QZHNA2082964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012b5109f9060c9d75b523a0d60a676d98955e33c9fc1b6b2d3a11a462e77ad5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:53Z), 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/QZHNA2098628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf069e65c4f98fa40a132aa85c3eea95c0b0d3968cbe26df45b0d879999585a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:43Z), 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/QZHNA2098629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e264ee56ed325d486bb2d5ee441761cdcc438128c8e5343c08caa18b162d6f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNA2098630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d027a3e9a331828fd456e657382042adb57e35504725edc5b8105832d9867c3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNA2098631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e671f0a203c8240ca883dcdef25799800b5cb07bd33d3355c6f0a21cd983f9b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:50Z), 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/DEY472173797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8062fed94f816fcb6bf6755acf3720bade6d31d189ea15c88785be8fe639044e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:48Z), 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/QZPLR2161906.
EVERYTHING WE WANT DIED IN A SUMMER WE NEVER HAD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143eec41375092a2ed812efdde6e73bc4b7c7353e3952f4477dacf2b94f3663f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDA52230473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8aabc207866a6e6cfe9532a06476e3789e99bad6d88af3f2f52cb84d828458. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA52230474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8c880bad8fbff78671512e303dc22b06de9deba8bd2ff18691dcf1d3de5f97. 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/QZDA52230475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9f4687365efaa43815bc6519a1f85e1083348140eae784a2bba203caad4212. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZDA52128060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ef4d78ed160bf52f39538b07efabe2e60687a95ae27e092cab899f689a0c5d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA52230476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe806656d0a575f273353c3d8ac2632e003869da5ecbcb2969fec09701fe0b888. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA52230478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e1727090b7e5567bd9ad7c097264dbbfc8fd557681cd0f6616ccc82d73a45c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QT3EX2441325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca09bb15bd33e13aa2f9022d3f86fd2ea9512efe141ee3727ce3924d649c00b. 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/USSM12410077.