thumb|Apache gangsters battle Paris Police on 14 August 1904 A gangster (informally gangsta) is a criminal who is a member of a gang. Most gangs are considered to be part of organized crime. Gangsters
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 0xaea821f1a4ae8d911253978f924513d730e498f4bcf75cc008ce71bb92575f92. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1fbb619-4d8e-44d0-826d-93d8027b2c5d.json and https://artists.proofprofile.net/proofs/artist/e1fbb619-4d8e-44d0-826d-93d8027b2c5d.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 0x5c81dd6074c6da65d6f9fac3987a883fdc8bff8f6dc9feea66f86d77c2a15d86. 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/USDY41753678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b56154f48a7d63c93075c5454c0b0aa5b6b87c718bd164028386111966400a. 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/USDY41753679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889e9d04f79fdc3e17d354b022af93efdc38281768bc03c0ad0d87c5f5479fc9. 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/USDY41753681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a6b33ef295fdc3d5bc7ceeaab17ff29e4e22ced98d3affd4032ba2dd3783f4. 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/USDY41753683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edcfef1d178d0d9f419cf1233902618b20e8f4f149494d4051fb81eb1f604c9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USDY41753687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6159cb0cf61bf6fedd9297472801fc252b083d06cf9b7fc48e9e1ecbabe79fb5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USDY41753680.
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 0x4c12e4fdbe497b81bddbc6bbd23c2000b448bc9f8fb04b83318c13b97a0e6c57. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDY41753682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32876e1019fc7713d8ebfc88955792a0a67f3d5d7a06783fd856e8fd8579cb27. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USDY41753684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb5110764b76c040e02856ec89b29f409498f58d33a012533f396dea23e4b43. 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/USQY51119456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fae8454bb4ffd387029a1f780dd1547a0ec2e90715d3b3cf5a826a39034a01. 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/USQY51119458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4d4ca5fe7f9a782cda9c7b303ad16db3c5983a98dc50e7ee5df341d21073d5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USQY51119461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0c35cc50febe080474b0eaeb4d42ba257fe92f20eee17a2c48a3b436530283. 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/USQY51119464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17697251dd4c5e9c4d096f166bcf634b54ba19cd715f7e2bbda5bdc6b3912271. 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/USQY51119453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5fa1daf2a8b1c5806d254fd11e955f8918a89c485b90533c4c6174592311e6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USQY51119454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e2a0cdb971410324057f3283c8f60bd55610de7c38ab50cbf6090ef4a5684. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USQY51119455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ba4fc4065d40b4a49b260c74c9c6acf44c0ec0581f6fdd07283662c1d195e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USQY51119457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed7a241fcd02aa7844c9efe54f8ccd9fab13eced0b81c1e06873edd1ab0ed3f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USQY51119462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6868a52118025bf0615f2dce6cba24914c5862565b0fe69a1320466dd45068a6. 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/USQY51119463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d50d03b9f2602ca61f81fab46f05f33db457f70d7eb2e5989423a92b9ae8b9. 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/QZMEQ2457358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8003c8a4f83e6a66a638dd87fef18353047d65bada375cda0c77f43b56b88976. 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/USDY41834064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf812597666449a0c07de4633aaf0e4fdd02b8bba2db51752021d129161d93d1. 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/USHM91766726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78f0ecc35262d4aed20eba075fefcefa2ca820430efdd4cb5d7782ab4cd4f3e. 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/USHM81782349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6954258aee488803c38cf3f1721da98268f6ed4dcf010bd34f87bfaec7845c. 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/USDY41705643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ea60f2a1df9a5b0c204378fae227de3be333c14756640b03d5298560373f6d. 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/USA2P1407805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140b46d46422928cb02f68b6ea8b890696dd95948d41c0c6eaafabcceee706c0. 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/GTA111900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb4d43870c7b5bacdd77df3edb21affc2752f4a73ee766e2f17a397f7b7ece8. 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/QZNJV2333040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36a111db098c88a4dbc7c999c80a9f1dede64d6e52553855c304485e5308499. 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/ITBQ61100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dada0b7d0f5e6f407a4badb2ffa7b26e10cfeda2401d4c89e85272433930bc5. 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/ITBQ61100269.
Over the Rainbow (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31f23d0bc136e3dcd65a4f2727c76938195b0893382172a11901df6bade6808. 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/QZEKE1843497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d59d99e99b721f6585bde91fe5625ad1a6287ac48e694822dba4089813859b. 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/QZEKE1843521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f64945b911c9ace84cdf8b1cdcb6dbbe2f88ed1a493f4bfcf1689c643b886f. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZEKE1843516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce0f5894a9d5ef85a7b70109c58a00ce3e7aeb0ba18cde589f7a7501df55ad5. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZHZ31944823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75919ca3849198433b4b2e45c9f9368b9dfb6154b3343ab3dd6194b41ec2559f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHZ31944824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabd9e8c88b3c7119cf849a8683a74a2b2b368353d0ab20e771fcfe0619f3faa. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZHZ31944830.
오버 더 레인보우 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc06efe1436ba9cca31fbe414f5c5061a15f030e8e8c475b1ceae1d724f23de. 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/QZF452025407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0f4a9e50317455dcff7b754e82d521539d13e7b03e4f9ec2195ce32102279c. 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/QZF452025423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485a14f18b505e750310de2da66698ad851906b1c73a2e59c55b398268a15a6. 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/QZF452025433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d81f923b583d15c351c84548a545c8a4041944ae292f9b4f47a84cd2fdc8f57. 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/USCGJ1835668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267a8c99cc3e584a6fa6c4aecebd47511989046da101ad77c5261bf72c88d619. 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/USCGJ1835669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c5f313ba067e188324f6e310d8b3a14d319a21d0dfca268b962bfa1a409850. 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/USCGJ1835670.