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 0xf1fd0b04dde18fdc91266bae3f500cdb424e1275daca7ca6ff9858b436a164cd. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c80e250e-6b39-4f2d-ae23-0a1918429a0e.json and https://artists.proofprofile.net/proofs/artist/c80e250e-6b39-4f2d-ae23-0a1918429a0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Movie "A FEW MOMENTS OF CHEERS" Original Soundtrack & Vocal Collection
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 0x4fd9c6b902ded11525c706c290e5935d419e0169bde2b7cebb84e13b4f36ce1e. 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/JPI102400994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7378444bdef0791103aacc5a20f276c79f5de6257abfb2c3ceef10bd490dd9. 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/JPI102401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb20e920f2d35df8737bf011378f6185bb1846375ff0de0f7387847e6b37ef4. 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/JPI102400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba8c0e1f8a0271bb5fb33313cd49ec06fa3e4779a15ea3b2ae028d99d38383c. 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/JPI102400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3dc11e5d19aee65b62c5776159c6548bd92ecb515572ae0411a3c0e2291127. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPI102400996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5086b2edd524f9dd7cc0bed97f5365c7cbc88bbf869b5eb5a48cfaf8474a8b83. 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/JPI102401012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f52925549b8901cc09009dc9d20b01428f99cb7a47c85ca0a88a4ae26a0c6f2. 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/JPI102400998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0a22d93513241d02163458baf0b11c2140fa1371f66dcaf2f51c5765a6272d. 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/JPI102401014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a2a827304ec39da0bbd1ceaa2fbdc5d96122af0395db118aa7be3e76030356. 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/JPI102401004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69409663be7724a6e334542fcec804807ef9eef1e657ead47c8ec56ce2bf586f. 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/JPI102401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bcb3616acb6bf0ccfb0a36c0afe464c3786f25c494c94d5e235c7606a86a13. 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/JPI102401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310f87c3623c3fb7dae5c760edf698cd90a3d31d72c011fe4ce44bd8856f9970. 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/JPI102401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e8311f0b04740d5016802cdd1c63e270179386596dd5540a216dc6c4fcd854. 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/JPI102401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc2038cfa3c0ceda9b0bf9f7288cd950bf3613141c08877a383d40251660cb9. 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/JPJ222403078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa209739dedcd7563f6f29e79b14eb435070c91c61ab1707e25f87ccc0f1cc794. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPI102400995.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c8b302e531c2081546655ab7b10d8712227d73d4c9011f28da7996ac613399. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPI102400997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8521e36c3d17fccdd679b74bc77c67b6a7d22277be544be480e37251f4ef787e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPI102400999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8358512f8c1a293e4cab40bb93987b4a5d083e705c4d11362e9dd67191e007c7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPI102401000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e5761c9e3207941e27083ca3e133d780011ab46f4a5964b71dfced03edfac. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPI102401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c8a7a84fe7355b80e67a6b695e15ba882a6ab2ef85853827acb97b7f79167. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPI102401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b4b3e66591a4d67a87cb90e4974f9f3bc52a1b440a55dfa64de4f3a8be1163. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/JPI102401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce349d674922608a149851d02337fbb128bb8ef3a1da34ba1f195a06b95156c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPI102401007.