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 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 0x921e8e71553e3cdfdf77168720fbe02b365b510b64a2d439001bcc7b991f8463. 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/8acb4e35-ea2c-4df2-ad6d-6348aabc8922.json and https://artists.proofprofile.net/proofs/artist/8acb4e35-ea2c-4df2-ad6d-6348aabc8922.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 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 0x2603e83d1fe8759a40dbdc81fece0581856f6aebdcfc604803d73a60a22610d7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCACE1586872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c69e00865ce6473baac0a511666ea13ab5f639b08605e9a0199c78787d9b71. 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/TCACE1586880.
Eternal Fact of Water (feat. David Maxim Micic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6762a4611597c6aa4c2ac84ffce8f16dd97be1f0bdc9e53b3fdab74e9ebcdc44. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCACE1586886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023ac9d180ffe3f21ae08f4a80176d7ba3b5cd67275b89b1e91f2a6b21d36faa. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCACE1586887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabed0d408d6a919f0b49c6b3dc2c1f7816b32fc578859ee4c7f74631cef2780. 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/TCACE1586890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a777444baef31a7be24b992b43e09789af3a9b36a9686d7c4da9941b54692. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADE1714033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a067668c3c82bb114ba00d788092dadeea571e4229dcf0d321684101f9c329. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADE1714040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa5a043b33ddaadf17652be3a73808476cd2ed48e7914746afe7c2932ae51de. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCADK1721915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d39dd2fe087c6919e55e1e708be7663a0164e8075a9fd62b2f532a0fecd543. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADK1722006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4a09f38559aea8424284f310b432ea52ac54f99b5c478872cfe550fa3ec808. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCADK1722024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ef0163641a1750d9b2f2bd28032393bb19723525405d153826313f6f1da5b2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCADK1722040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4fa22a9b15df474a9863e97a6d56bed28de460ef1708db149614950fd900c9. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/TCAEJ1986270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e6d8ae0444a9753d95de0fe5ac8b585363c07ceae37e921be9a6a2a16eba6. 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/TCAEL1919964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6312fc3813d67c78f58fdbcdc631d5ee6222ebef7554685c59c53209f5ea34f3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEL1919999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b7af28e8f2d43a870116c09e15605f167adc67ab308a147fa3497745364978. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAEL1920005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df8533c1232b51fc033ade806dd7894c7079aa3915c5184032b958c278a0757. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAEL1920006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5901ce8f37e6f7a9e2bbd19e520f5781aa1f9d9d1b0c14736c60e3dc43e77a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAEL1920009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99640798d27d22935cb13e64b65875f5bd1a711caf50c466490d031ae529a2a4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAEL1920010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4c2525ca4e623f4f8e274075c26fdb3edf715fc05ac579204a766827c9531d. 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/TCAFH2032554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945cd32c34fea18779f3bbe3d78aed6af5ca53fc61bb4e7d260c1dbc1d8dce0a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAFH2032557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe16a12104100afb2b00d622f7dd99282a4af74c7cfc2ea2f73d49f7effaf49d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAFH2032576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc79dcca670013b434fb8373dbe78672e6d87d7347c4d5aadf4350e4f721654. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/TCAFH2032579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41c709d578a02f7dcdc5d3281e5d9375ff77aec33c226cf72ff60d0d1f6ddf. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCAFH2032591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a351131956a0a840cd4c3aed013f27332acf5cd6d06f898d6c4bf7a003d90. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAFH2032638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114861d5c4b5632c566da9099e437a72cd4406152694c614a5b718860e89348e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX762222237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3779269fcfe2836c4d6bd417ce5b3f6e0d11de85730edf6be5416e7bf83a7a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FR59R2350199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712a2785cdf6fee220c4da8b8d6edf1c6bde8849015d2fa32c184575671f45b5. 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/FR59R2350200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e89c492ea182d7cf4dbf0d7e4c7d89adeb4e9fbc3d748271b73dd8bf38da31d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR59R2350201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce727a04fff5e85f1affaf33a2f3e6ecd462e21ae8612f49d11b635426449443. 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/FR2X42347394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a9b343a6419313b56cdf1897e1794030260907a164dd95c8d3e34f43a37213. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR59R2350203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd6edc6b4bff2199947e8edbdb2387963b27dfd9055204fc96b238ca57727f2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR59R2350204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a58526d0fe8aa287d513ac5c54312c0b81c47a77e4919f8ba462113439de0e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R2350205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47619bc0bf9206c616c39f10ca639787a0fa6bd262aca01404fd16b4f783dfc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR59R2350206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e98c609e399e0c36f8c691ea3d99cfdbe940453be49d03a15eac0bb5acbc1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBDHC2550301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396010002428d6efcca42731a0a0ed496207c348df514b610de41c6b608173c1. 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/TCADN1847018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1534d6c7c666436a0875cc63afab8ef6444fca445fca85dcad58e41e73a4b6d. 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/QZ9Y21763561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15deaa25af56dfba3e02942564b629fbf2212436e5dc8864cb538c54624e30eb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBS8U1250009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330827ab39271ab9bf90d5beba610abcde1dd62ed49db34bf5b18c52cec0b9d0. 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/TCAEU2092955.