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 0xfb600673ca0697ec286eab67091500735dade70fedd66634d811b096a15ef672. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba7a2153-e6eb-4d89-bb17-565a045002ec.json and https://artists.proofprofile.net/proofs/artist/ba7a2153-e6eb-4d89-bb17-565a045002ec.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 0xacc878b46ef4a37420c60f34f4bfffaf6a7ec660bf1cc6b399f123fbb727b6df. 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/KSA012308869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd931303a5ecee9a569418d358b506ed6db59a4d7c83cf2f6362645111437c8. 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/KSA012308870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5f9039725bd5a8592ce1d2766f68222b24e34020443212509288e08edde4cf. 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/KSA012308871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85b5a37611cb5d6eb9e209a8b1003904c051653479db71d25dac1d734f864f9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:35:59Z), 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/KSA012308872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15893e9ea81a1532871a0bdfcf4190dc7d023ea6fcd5632cc6bad2eaf488184e. 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/KSA012308873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05064cfb3bcc5c8f46d4c977263ec23b74750db7561caa782382f441ab2a35c1. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/KSA012308874.
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 0x1b4b5624444ecbd4df221cfcbad3d47eb1bc0e91d5a4e820cd611dd154586599. 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/KSA012308875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf5ed1d20cf435d1defc9b19407314ebd6b2be940f170de8ed00fb6dd50ba0c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/KSA012308876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cacac88437021dcec5040b2f9d3c02b042aeb6a00f9c43e61d555de7de2d43. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/KSA012308877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0210c6631ab19ceac5e4eee7711d85020437a8543a7f47133237266bb9fbfc7c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KSA012311932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f83ea00f34c550218defa7becd80ebf2142a7a7787e21af4719b5a5336c0748. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/KSA012311933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffbb270ced05e83a55509a1b3d3dfdf24470d1223a4a5c3fd774f9c4ed23576. 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/KSA012311934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1beb0191344e992138dd65c5276fa1bf2ddb87fbf4e0e30accc7f5b04afb72. 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/KSA012311936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d88da288268eebfc231f72fd286114acae6d594b07309ba44c7937d1d561d5. 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/KSA012340864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae53859f8a39b299925acb7132806a33f1fa97ddc715c5b0c3c4dd7ab1f91e. 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/KSA012340865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617e4238304b081515f79e0f914dac829b5b651b2c7fe0efd6b1c32520e64687. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/KSA012340858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41da7f4235896344d539f76bfb775379f28201d47a670e933d83a56d9b5c8c0e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/KSA012340859.
Philippines Gang (with. offline stephen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178492573400795a5127ea7e666547d2446a3c87a82873b20ef08be3e4ae2197. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KSA012340860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe73001288ac825331b5ca0a0d4d42dc537915f1ed595deb6aa344e1d4e7fc7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/KSA012340861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7197b0171e37de02cbba1772f7ed632a7fb63ace7ffa15a3eba6be171ca1c699. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/KSA012340862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09637d8138cc7eb693b29dfb51b690f899368cffab92d539ca155869d98546f2. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/KSA012340863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e951fbb29899f5c1daeb12fcd33c7d8d9ca302d7f42d95526f169335c47fa3. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:25Z), 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/KRG032402885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f0179a3979c8cef36cba34dcc0c83193b178de83e9a176dc7c06e722a65bbc. 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/KRG032402886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65afcdda62c898bab2fb9bebd33c0a96cfb8ba5fdaa89c27759c83330a6c90e8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:07Z), 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/KRG032402887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7722b4cabcfdc2407f599dd8a3cc302815698a149019b9c945cc3186cef741. 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/KRG032402888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dbe130a305b5c406986fe7099b0a094a6a901765233629e78fe9e60e8cbe10. 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/KRG032500686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cac6cfb8c205295e6a569513c7d399a53025141db4a438206e92015cdb5378. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/KRG032502710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901252585a18185987429b7d6d257d1b013234cc320af6d5d5350d20450b2859. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/KRG032502711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae92502f873e9d757c3a81cfbca44cf8224fbf95afeb2ec5c7b835a3e1827eb8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/KRG032502712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856e60d45dc72e52143bced577aed6477e6aea94453150f435f9f01a9baa5026. 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/KRG032502713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde036e370f63966fe87a31bcb94dee5897c09a4d016c74f1310f14633e2bcc46. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/KRG032502715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb588c9c2b477cea52e3afd049c4e7fbed32cafcc75603c5eff5cce2c03fe40. 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/KRG032502716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523b137a25c0b5ac0a34c9eab348547e9dd3af10c036d1e17652014ed1e4ed38. 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/KSA002302046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51ad5710d84c33965e6cad405e8b20edb45f8b071ea64d47cb27120ad2f6f8f. 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/KSA012309243.