thumb|Prime ministers of the Nordic and Baltic countries in 2014. From left: Erna Solberg, Norway; Algirdas Butkevičius, Lithuania; Laimdota Straujuma, Latvia; Sigmundur Davíð Gunnlaugsson, Iceland; A
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 0x0b02eeee44766abccf90bca5c7826729523cf16e69f3da9535e6857d97527582. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f98b4ff9-bcc5-4a77-a99a-a97ad573bd1d.json and https://artists.proofprofile.net/proofs/artist/f98b4ff9-bcc5-4a77-a99a-a97ad573bd1d.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 0xf98c0be24610ae63bd05331b5d8db1d3778bf9a9df0d9a4ea2df3b57adbb7b7e. 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/USA2P0713688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e215145676822c27b99c2630c663f08aaf803be89e917e8b0708e9962c4940. 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/USA2P0713689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecde1bc0cfc4314b7ed8e506916d73a18f7502d77f24db1956e2212813d2e9e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USA2P0713693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53887ae3352f76c45faae5e59e827ccc2ced7abd0f7b219636e31fd17287055. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA2P0713694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9fdc671b770514583b00d6e4254d2c7deca31020ee6d3cd6fe69f33b339fdf. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USA2P0713698.
West Coast Connect the Compilation Vol. 3
Muzik Ta Ride 2, Vol. 7: From Tha Ghetto 2 Da Cross
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6574d65553d504c8f9f8f282515093e215fdda14f6f9ea440a54cc36df3412ae. 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/USA370520171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e408da6f5bdf6c2e66d3f9ee7892e76cacf3fe275e618e49ea57f0e91d87ae. 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/USA370520172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7df62942276712d7625adf3fda3786324961c424b1d82106b2f6f65880367d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA370520175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe311576b776fbc1e544e37d6cbb548dc58e919ee988667dd18f68b26920eae80. 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/USA370520180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6bb31e8be3c4844a805004ccf244c6c4202801d0cc3bd05572abd2ade80516. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA370520169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f1f0de462018cb671b99888c430e90ee8613ba1ab28c0fb4e0aa62ba6e358. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USA370520176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f022116ffcf4de105d6292a9bde00c24461f00db0cfcf2178cf3b0e5aa7ba26. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA370519971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217a819a1e976fc6e6bc34658dd35f67f6b6f354c7e7c6efa3a4899c2dcee74f. 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/USA370519972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bae03e89c701faaf5f1eb339198a9e0454d3d65eac561a29e191fb494103cdb. 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/USA370519981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244811aad5c48606e163b9d0138090d9d8d6446343be5ca025b1d7bf01d91992. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USA370519973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e95657b25af62cae8c29c026e9ece018a6d489066bc0cf1ded6dad877d9aa7. 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/USHM92113765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10691f6d7d4afb72b60f8f75b1d0304e084a89765799aafcd554c9cdab86256c. 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/USUYG1150338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7829184fea0c809ba795d0879238e03451ebe5f54ad83850099e37af519c72. 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/USBAE3365576.
Unity Is Strength: The Best of King Dubbist