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 0x56e1fa6d83493340e1a1f0fe54de7405d74acd81ed64edc53dc16de872f88cbd. 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/ad5357cb-c6f3-4769-ab95-d3480534d648.json and https://artists.proofprofile.net/proofs/artist/ad5357cb-c6f3-4769-ab95-d3480534d648.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 0x7d420c86836037146e9ab381503d44fd89b4868291d7a6678d0e8ef7cb2c8c97. 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/QZS632346854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d41b5a980f97c2149610acd6ed84e3b3f77bb976ff56be5ffde81aa0ed4056. 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/QZMHN2392294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf995bd2622eb358d6036a51b8c7e49ed7f2c7c2ff66ba4ea67c27ed9ed4e2913. 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/QM42K2393037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476d2967df1f7b6fa2e0d70e11bb37f8214cfb0f48a5bc2f949796e6e8fd5f46. 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/QZKDK2185960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f23822cabd11ecc128af73d1d762fe990d4fd17fe81e4520964790dab46be3d. 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/QZKDK2145735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f790db992d50962583ffcedefa1f826e5c3463f54458ff0f6d28d9545945bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2199518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49967033c041b67dc9f5d877ce75d82f1f564c4fe6748c10c5836635df8be50f. 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/QZKDK2134125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9433c287f5b28efa50fc0a4d05cd6a94f2265a83e717f13f166f9a0d6136c95. 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/QZKDK2109981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee6a96cf955bdef5e492c13974e0683a4ce7a14567f0e95502e16027b597eaa. 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/QM42K1968589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff75a6d08ca3894771c061a21e092439655e13e0f9c7a1610f93ac99ea5edd1. 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/QM42K1969569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9883d3c7a58d6f0e962b1b8812ef87014cd296515c509589f6cba8570860582b. 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/QM42K1930955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa795a9a1960352cd9e25f95291f69888670cda2d9069416b3c66c48fb1b862fe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K1968304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c047c0de1384b327f668565702e2ba914c1c064b00b9a2cb133e667d670934. 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/QM42K1970054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59e95b260f4ae1227b027fc3521896b264483461e89b0b15595f29ab11d389e. 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/QM42K1950746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ffc89703e435f0954933fcabf2e95b1cc578f0b159afd9f9dbb068265b2334. 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/QM42K1964008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd89e73ceb4b7f73941da95bdd42081b7a2db918dd57949ca082e638c927155. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K1914908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a4c53086f24718a30e0ed0373e9a4563c08bc73d74c73d7f80b83297189939. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM42K1982550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c949ec2dcecf7ae24b52e6b33570170c098b8aff3ddce50a3613de6ae861257. 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/QZTH82107787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a82f3b1d9855903f0e5bbaca82995db4398a345cd4f64ad6ea754e3e8d76021. 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/QZTH82161983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc39da5bf851bd8a7ec5848a7c5c63247f5c96630f5985f5d4c1488ab3465c2. 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/QZS652284529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c949ec2dcecf7ae24b52e6b33570170c098b8aff3ddce50a3613de6ae861257. 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/QZTH82107787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201eba31044840861c086bb41bedf1cbb136e1168ebcbd992294b1b27b0f4dd. 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/DECE72105164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b01b2fdf9ffe219c941b8cff75383b11dd309a5293c810cd1cdd57eb72e7c1. 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/QZK6F2173702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa922608600d4e4c3bf84a544207f4649cfeefd1fd4fbbbab4820417029478c21. 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/QZHPJ2170347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5e44b9baab02af6fcca8ece2f18b2da123df0d411e77005d949e822bf39698. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHK2006089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2320f5648a080479a80f5a9915982fac59b91479c867b0cec01067fc793738a. 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/QZMHP2004644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f23822cabd11ecc128af73d1d762fe990d4fd17fe81e4520964790dab46be3d. 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/QZKDK2145735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fb6c2b40cd0aaa1341f52376b525b90510fb6c049ee7375aa6e71376034a81. 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/QZJRC2028489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859ea2954516d7eae48d292ba41cd858e2b84c16f868688e631f7be0724c22ea. 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/QZMHM2062604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc915266835b1e3d3621ec4514996edfa72b88e5d706f0c0b51c9a08e61fef3c. 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/QM42K1999510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbb75c44c92a56c717478ef0797a11394c4e6c45de47575cd70fa04c4ee1601. 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/QM42K1988659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b0e023a568e2981234f7a98e5ef408c29fb5b695dbcad853f46bc96f970148. 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/QM42K1957517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1681678be7bf5f3e7c2a0472326bc3dcb521550074fae68a7c7b6cede1a80a86. 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/QM42K1912726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a4c53086f24718a30e0ed0373e9a4563c08bc73d74c73d7f80b83297189939. 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/QM42K1982550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbacec8cc3b90b37b914da495661c9f2c02447eec05fa2b87ab273704882c68. 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/QM42K1903176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c047c0de1384b327f668565702e2ba914c1c064b00b9a2cb133e667d670934. 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/QM42K1970054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0f3836c554023560ab5775f0825be2036182a07ffbd866af71ba5d18791e7. 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/QZHN52149601.