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 0x4ea7b4fb74fc98371e3cc8cd01e45d2408820063e5f22fa514ac6223f594eefa. 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/809bdde3-848c-43ba-885d-75a15276b1b3.json and https://artists.proofprofile.net/proofs/artist/809bdde3-848c-43ba-885d-75a15276b1b3.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 0x36acb87cd04b6e0b93997663d577c715192f9f75c2e5f2800cd3e12f0ae115fd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBKQU1556091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6300b581fa5797393d9826f9bb1867bbf56ca03b2563ec9a876273c444a2d0. 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/USYBL1600685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718f4f749a8d0a7ca5bbc647ed5b6febbfec0e292e5c5ad01eda445da28d5366. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USYBL1600686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e7ca4fe36c04161a38be18edd20971b5e207e32e833dd4d0bac2bcd276715a. 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/USYBL1600687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd263455b3c6ae05da6c35ac239a6eae7fb3eb5f49356d3637c692cb784eae2e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/GB7YL1781201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4348087f538ead8728ea2cfc2f07beb2784632279b1fb6cbbae9ac7480ea1840. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GB7YL1781301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366bb3383f8d789152985d166fede7e7d855a4d579eb57e49fa496bb5f5ebedb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB7YL1781601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025e16d1adbf7d7032d8029d3c6c6c5a2551d3f221e17325fdf63d45e5a97e35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB7YL1781701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed857ef2b085f37f750b995b5372f5083bb92ceb248af3138d20567dfd91e45. 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/GB7YL1984601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d24f9d07df0b00e2f6fb834e2d221605256707f4445d2cdf3bfc249e1192193. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GB7YL1985401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b7050974eb8d13544b2bc135b5fd03a043d1222b04c374afd8ce0e97049ad0. 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/GB7YL2087701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191d89f88fa8fd525a32a71e04a41f8ef6d19a88de03412c19923c72fb068b2a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GB7YL2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d9eaed4d373b7faec3a11fe3983eb118ba2e9c78e1eacdc765eb46297a7a4b. 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/CA5KR2264956.
Castle Walls (feat. Casey Cook) [Soltan Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eceeea29528314fe0869981528909c34deee432b7ce3b9832f664166032d6a1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBEWA2204700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9d72d6d4e287ec66ef022b9ac2cd741ee207eed503824af378e5240e975b49. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GB7YL2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8db18b4b6a2b7a425e98adaa60c72d67082ee3b4a89cc99249a9f9d2f3f5be. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/CA5KR2471692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc798192b25c585c491ab2c1a8cfaefe23ab9bbf50120b9deaa318cae7073d8be. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CA5KR2492590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed30510a8045680365780dfabf7035e498b65b78d92ae0f6692aaddf42311cc. 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/CA5KR2492591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd24b0064ae1c51af5ee7a0c324f1d4b03be0b9ccc59c374bb128e48eb09e057. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/CA5KR2492592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9b58c77098a8543cd387b785340a3aa26181cd01efd835c700ffaa621fa74f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CADUT1807008.
Castle Walls (feat. Casey Cook) - Soltan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610c3227ef332a5818c8150fd388a233bbf82f40b42f3867a2bb55cc5144dd3. 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/GBEWA2205076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe7704a592bed0096b938d06cc43295f4ab5cfd0abb5572697af6a176fabfdd. 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/USYBL1500947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d9eaed4d373b7faec3a11fe3983eb118ba2e9c78e1eacdc765eb46297a7a4b. 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/CA5KR2264956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf541323ba9f1c62c405ecbb059e2f0d2edaae42968715d69c1ce180416f7ecc1. 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/CA5KR2450337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600e1b2f287adc7f6ea47f8cbec57a38d51b63be223a16efae66b5bd46d7823b. 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/CA6D22300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e3288eff15837223c71dacf70a868896ab009ccb5fb9c3b3989e45d6a07494. 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/GB7YL1709905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a8da86579d2de1789f59ddb91680b176e21a127510524e71bd01ae4650de9b. 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/GB7YL1710002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c1045d9c0102c8e92a138338c752daad2bf3c38902e9c192b01a04107be006. 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/CA5KR2505461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f5dc460d10fd75328e2754ceaeb59aacebdd56a3663b762be8a873a720692d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZS652404585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc553cbbd03f1a7645e49a5481292d1b22d5bb4fbb212269dbdee7c9a5a84bd02. 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/CA5KR2505143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ac3b64ee7e522c5eade65f1f7e9bda11775f6979bd2c88e1d315808fdae3ce. 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/CA6D22400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ede04242c10c9bd28acf3674dd289d4165011be95ddaddd7985cc4283e2e9. 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/CA5KR2420290.
The Noodle Effect (Re-Heated) [3rd Course]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ede04242c10c9bd28acf3674dd289d4165011be95ddaddd7985cc4283e2e9. 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/CA5KR2420290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ad086a0546467394d53454374bdabfbda42fbd5bf5a4fb76460005404a24b5. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CA5KR2243869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610c3227ef332a5818c8150fd388a233bbf82f40b42f3867a2bb55cc5144dd3. 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/GBEWA2205076.