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 0x6ad645314096eab875c2337e4ccea0b99a9297005be40d073e2974a951e20dd4. 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/e68fd9a0-4776-4e08-aa98-a73fccd95a30.json and https://artists.proofprofile.net/proofs/artist/e68fd9a0-4776-4e08-aa98-a73fccd95a30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kaibigan: A Troy Laureta OPM Collective, Vol. 1
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 0x3aeab4b66f3ecdae6f0e54c774bc9ed0a861422c7aebdfc167f0a86403e3ce8d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PHS032001481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2497e1f043ee2a568e6f30c55f3ca7cda3410a9bb83a09de2a7de78612f2f78e. 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/PHS032001477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef880f9ff338ea50f56eab646a49f2566039d27077f8dc82bbb93b0d6e52b85f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/PHS032001476.
Outro: Hanggang Sa Dulo Ng Walang Hanggan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ead4b4cd8d32252922660f74ce5113641fb43c7cdc2d67ee5a7a134a4351e3f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:33:59Z), 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/PHS032001475.
Giliw: A Troy Laureta OPM Collective, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233b9a59148e115afe1b3dfcc9c214950d68a44057b9819fa884847e3f3de347. 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/PHS032101904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025be7aa161fbee71ea439e2280db28a8ed9688971709af7928a0bee6d174c1a. 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/PHS032101902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d465669149a89f3a9dc266ed71b863e3e0a8f567a01764faa875668e005b7d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PHS032101901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a7bf1344e41929c98effaa7d059a442352acca4a5a008ee8a9070e20ad2331. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PHS032101900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3383f57c734a894894542c1720475febf7bf434ec912713235cfd42e4970304e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PHS032101899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a7d793d8ea9127a4d641a050d93f65d13343cbb115a7395170cd33fb2dae7a. 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/PHS032101897.
Dalamhati: A Troy Laureta OPM Collective, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba01c5d3eae1d13ed02d31453b5a82af41b8bb9e77fd6cf1acf740369988c1af. 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/PHS032302478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80551bf05f1b96902ab76ba1d6f9e7968b3e149d9147e8cad613bbb1f16d8d2. 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/PHS032302477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29046fc6139e338100f544bc1f14f7337f6a0e1e1ddd38be24c5f85b0786706. 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/PHS032302476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf056faa992a02c154c985d9cb1b4dafe8a1e0b4ece3dd60bf24e286f48a8590f. 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/PHS032302475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8abcf8c78afbf18e51b48c3212b88eddd3f9ec813a505fe36e7738cae314d9. 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/PHS032302474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba09c9d91d2b45fc679bc758ff906ec58040986eba174abdabfb777e5f30af7. 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/PHS032302473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeac06814e6ee74083e1a6cdd198b816cc5472e5696b5bb4712d51bb7723da6. 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/PHS032302472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a3c91098017e19816b93e3a221d7c9952b838d97fb865576c76833bf204de8. 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/PHS032302471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb944a15224e4d9cb8201f3b6f898d09e08192e95541a46ddfd0d09138b524b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PHS032302470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c841369ac5b68ef41f587733836450c56d5895a92a694c0c61d7ae76219ef0. 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/PHS032302469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a2836ba854e46b98dbb41771abaebc30580cda9d385cbce0fced7ea784a549. 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/PHS032302468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64f7ff17331c4ef37a9c4f6fcfe41738f0be50f25f86e703343576dc848f68f. 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/PHS032302467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec643f7bff60c5305b1cd54848fb694431f0fe66d220d8fa633e1eb7badae18f. 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/PHS032302466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aadf664bc68c793726ec2f679a763aaa963acbfc59fc913fedd2034200f6e9. 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/PHS032302465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9df845faa4392f63ffcf4c587f8bb451f405e59641032350fdc150b23e38085. 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/PHS092306195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff07f6b75ec6db918713ca86a7a7ff91752c5416b1997fe389df052f532cefb. 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/PHS032302462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0767a78e59c227137a37c3907be3e606265a07975966a1ddd9f0d349999b8812. 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/PHS032302461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d4ca4912a30c1e6ebe2accaf6815d5828308c042cc79fcaca8e262bcb1bfe6. 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/PHS032302460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42643bda849b92d3bde64786501a69f92e1130f48b69812e91bb83daf25f3c05. 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/PHS032302459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69a4c4128c1bfc95562b3884ac346d9e9a80c40e62308835f6c9eb9b2e409af. 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/PHS032302464.
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 0x97e71317df17f19f0c8e810e5219454a02fd235182203ce89f6812beb2f52922. 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/PHS032302463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136b6b8cda2c84ee3a02d58fdcba05bb4e3f2882046267c92e050534fd297cd4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PHS032302313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2ba64b05db4d8ce9e8478449b348ec8213dc541d905fdb73306314d4901074. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/PHS032302446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf8b22d99c9e0f06300dfebb0b4b4717fae300109c17f5dd7219aebce552ba. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PHS032302458.