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 0x4b63350279ca6be89a0154429dd6943e91bec7affbffa9c1bd913bac690f6ba3. 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/64725605-c127-411d-a357-3cc79c4cca22.json and https://artists.proofprofile.net/proofs/artist/64725605-c127-411d-a357-3cc79c4cca22.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 0xdbf6d3a4fbf9c150b2b877c27173697b1c1c0cedb7d6af84b4308b18c1123aed. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TR0441312005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac8ae4d604fa3ceae70c52503f2f804788d2c64348808bef102bfe4b8312849. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TR0441312006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbdda0047c603d9023cb1f47d225b5170b2ee1bfd6913687452190c636408e5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TR0441312007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687db8e5f56a9c2112a55659d4ce2f874b0c648ceae0833c97af18333f724814. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:34:57Z), 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/TR0441312008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c57b957ce2da8cbc5e0e054b724852d986b619486d22a55f0422043fd87e650. 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/TR0441312011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3496d20699fbd231dd29b0136b868ae9f966f30cd2d31afdecaf87c1e2bf315c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TRBBH1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f6752dc2269545ddff776cf54ff1df2b768be08db16e4f7ec3854bdc4d3f7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TRBBH1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82ef891f0196e5769a537924aa12dc9a153fb980fcf4120eebf0a2730b5cef6. 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/TRBBH1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa389a388b5c8dc3d156c6019fc7377e9f2d7242f125ae002971f8ec44dedc606. 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/TRBBH1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca2a7cf7370ad7227d854ef3106a21b73c45bfcab649be36ccd7fd4180d36a6. 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/TRBBH1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03feb3a20fd8aa9304ae3b7bf9c06bab8c114fc8935c68b06adab7d3370bd40. 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/TRBBH1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3496d20699fbd231dd29b0136b868ae9f966f30cd2d31afdecaf87c1e2bf315c. 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/TRBBH1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f6752dc2269545ddff776cf54ff1df2b768be08db16e4f7ec3854bdc4d3f7. 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/TRBBH1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9465cb768c556c0d3375095a7e12073dbca22ef8c0d1ae2c3d71db03a930ddf. 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/TRBBH1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb868f787daea71163e078245a4eab95a7d166308c66645d6bff73807c6bbd5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TRBBH1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1bfabafa5318d16ad047385032a8cccfb93eb6e28dfab11331c365c4ecd52b. 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/TRBBH1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf0317627087be3ee28f1f4aef100a3cc77842738478f57feb880f4eb90a61. 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/TRBBH1700010.
Bir Varmış Bir Yokmuş (Orijinal Film Müzikleri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8213054e71f4d5e1354b81eb4b261f3539f85a88a3b3be2a39eb7ebcf22db288. 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/TR0441516205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1747c2d3551f7b4c005f78c54469efa1bde0087cf2b32bfeb993d31566cf9a04. 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/TR0441516207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f957061638545f4daf415d8dd8a5b67e0548786027d17ba5e1dac95ca4c19ff. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TR0441516208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bbfed3906589740672735d6ba03051887cafc4ce5b4665a59d8b914346c156. 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/TR0441516206.
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 0x6b8351567686e3d97a53004c07f3fcb11e1f10e2590ad3abf63188c52a5b3c96. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TR0441516209.