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 0x090968323e8ae25cd22bc727f1438baf5c092f3097b66b86cf2de837537b81c7. 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/263490e7-b7e1-4ed6-a0e3-68a8ddc5acd3.json and https://artists.proofprofile.net/proofs/artist/263490e7-b7e1-4ed6-a0e3-68a8ddc5acd3.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 0x97c8b86fddeb3fea42b6e6faa4eeddb28e0a3a0b3d500cc90139a48b77b66eee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEL120702103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8808d70154bd66ca622ff9e953d654b232e9f1c667b9b85489784ecc6e414923. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEL120702106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7790253e8f8a58347b64bbe862494a49e31b95e0f3857065bf91ad8a1589442e. 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/DEL120702107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746dc81a878445986910438d8f238b6039fa3b8faa205f0b6c32861452120d58. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEL120702111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3159b95ced4259721d12a6c4055de351d8b477c4baa452d890055517996291ea. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEL120903907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9443883bb33f3dd2325941d7c14e81f73456cbe24d0dbdabe95d0aa6e1091c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEL120903901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515a6bfb2bd8daed58e41ce7587082b4ff96de1d37c1d8d05ec7ceec294e849c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEU331100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484c9b4dd43f286300fcf280c1ffa984311316bb5077f7b86987800542af7a4a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEU331100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e3297feba30e601a1827a73f760c3f4268a7ec2111cf0806ca2ff352541350. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEU331100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d63d960820823f7c7aebc09109953052e42428a8f677c9c89b86bc8b842e482. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:02:52Z), 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/DEU331100308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa281e80e6c986cd8710fca89e53cf4a9b9704f58b3c5468d45b9bc66b98dd383. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:14:23Z), 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/DEU331100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73877152c451ae4fa50df651b197af3748ea65a1025e6b0e6e614405c91e451c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEU331100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd742e66fed4bf9782484277af201030e5622cdd695be178e5729e411ba30e41a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEU331100314.
Golden Horns - Best of Boban i Marko Markovic Orkestar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593d82671724186da2762cd3b9c5a094fa1451b427a9fa9e0c8d487c83e141e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RSA221830167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1981dc9326ee2598ef5d8e8724c6def0da3658e060594568595331dcb4245675. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RSA221830172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecf675977302d0fa7e17c811180fb0ced0312fa40864ece034a3e16cdcd4526. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:56:28Z), 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/RSA221830173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fe6c2a28edc23d5a35e42c311917492912be3d8481a8dfe188c8f3e5a9adb6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEL120903902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41117fe5732e3a9946e738ff0098f69eb56c551c4c7fedb9c2f538ed267da1e6. 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/DEL120208502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428a42f813b0b4c07cea5e311c532b91fbef88d397f884274e2a05a4f836dea6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEL120309003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e812a17bf68abe2e82a68f1211ef1865c3e19404a3595686b87f784c49281e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEL120208509.