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 0xf3f3c4f8c2c93bc881356c2aa0b4f608354d4398ef45975cfa0ae0304f38420f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7f31282-3b5d-4104-a831-5eed53f9e42d.json and https://artists.proofprofile.net/proofs/artist/d7f31282-3b5d-4104-a831-5eed53f9e42d.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 0x9d6891a47c58675f1dab298764b05cf4e2e492b617b104f69df6f06f8090ef42. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CZUM70700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f6c297c7287a50c510d03825914aeb48a1c72c5963cca66271b37f85457ef. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:17:17Z), 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/CZUM70700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790dc2a2476c60bb78409e713c1b4aed29333c6013c1b00c456f5998db084f01. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CZUM70700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69fc4f9c8b2fc578ec1aa2c039b5dcbb7cc5d1171bb20fccd771f855dc7fac7. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CZA162300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde88841a75c72605dbd7c5f57e7bcd2c9a1353f5535fb841318672369dded261. 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/CZA162300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf63e3da9cbda05b9dd69b364e526ee62de6b8c96edb39d15640d0b1ee69bd9a. 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/CZA162300319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f750b5eef5924cdf643771861b1de11d4fffff74ef65133a6bbedc6f77ba779. 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/CZA162300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66bca5403cd0811fa97e67a301ae277298db0a7b73b50e556dcd976f9ac01af. 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/CZA162300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd081da70fd569bf5b5bce71ef0419a8d94c0c2f7beaa68739e73186bc267632b. 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/CZA162300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840bd2fd12a39b6d0b6a5f4ead7a4b80c10e0acd4c8eaebdb2e5c1b1f6de1ee7. 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/CZA162300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a9480a807f7367ee309440d05f89aa6e7b6536361f21d851cbe676b6aff401. 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/CZA162300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8522e8f74907fead20ad614bc9aaff871bd8c1b2153831a0c38dbaa18e740078. 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/CZA162300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ff77c01c8451ad909b6e1b4122d42948b15131d53c673e9af941ebfe21912e. 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/CZA162300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601952b8914391894a1a3c28af09a9ded98255c14d2e765bb88396f1fb6721ac. 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/CZA162300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a7430c0b861e44d075bddc00d393ca61f1d20988c35989048aeb4146af44b. 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/CZA162300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89509130e0b6c480ae0ecad874f6b27f4423a901ae338587858b75c940469192. 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/CZA162300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea98df487d689f4549a430fb0dddcc3b85462309ef3b8a4a815e0864b7a46bb9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:04:51Z), 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/CZA162300326.
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 0xcd6e0cdc88bc9046d4b48df81e3cc72fbafc06c38162ce03560ac36948e8d875. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CZH442500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161d3a4a13903fb214168262cdb23bb3b52dbb4106b9e3a1c06e74a57ce592d0. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:29:26Z), 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/CZH442500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4887d30f0edd7174b2f0b60897b1946707a79cf0609da92b5e9462b949f50dad. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/CZH442500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb56a2e769704dac1073e477e9b2cb011a90195e75b07f5f847730e4b0174ef. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CZH442500052.
AJ TO JE ŽIVOT - B – STRANA A RARITY & LIVE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc634e42405c5fbdab77ec37667ddd140aadd4477e0f13d61849d2fa371a3fa39. 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/SKA012000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127ec5e3a6fc3d91ac8e540b6048bcf3c065f7265e43eef033542dfbad6b62b3. 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/CZUM70800546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3ffff7ef0ee90c25fb512210fddc87f41d84206f0b1fdd66667971ed40936c. 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/CZUM70800547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251057d0f2f5e88ba547f512a4bebcc6b50cadd3064b11e49e9f4cfd729d6994. 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/CZUM70800548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4840a0e958a5f2949a7ff63f55d1e899973fc99a94b33de4785193a068e646. 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/CZUM70800549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7482030dcb7f4d9665df6bb41665105e90b19873372d4dca6974b6cded2112. 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/CZUM70800550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6a8fd4b2d973dd606dcc6b073352c98d9eda55e7efc0317a4d9e287782d662. 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/CZUM70800551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ac6156c1f93c223af50234069e3bddc0902cd4f323b637098de664e41aaa76. 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/CZUM70800552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf557ec2ec7195af5c546bdfab695113214b004cd13aec60d2b2692f3c01418a1. 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/CZUM70800553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c3224b95e44a859f31a193ad1af0a92bf1ae02b6989e9639a458cf62858ae8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CZUM70800560.