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 0xdd5787eceb26a4bb3c44c51f6d5e4852cc7645560f27eeb1c4a1683051c00bc2. 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/def28df7-f6a2-4f22-a723-c3cfae202662.json and https://artists.proofprofile.net/proofs/artist/def28df7-f6a2-4f22-a723-c3cfae202662.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mario Los Códigos: The Room Studios, Vol. 14
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 0x18519d1fe6df5d44c5079673f7041f4dae0432ec846b39f64b5c9f6b377e83f1. 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/ES64E2301703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65138ba1192ee2635870bfe04a53c5f592c224739a9432545ec2445b23ff7cd6. 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/ES64E2469167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c8447ba6eaae9b8918408fa56f834b6165fa814b30d4c0fcec2d1c2c3852c1. 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/ES64E2309974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07201174ea0c247a10d04ca0fd1a61d4d293d5ad1100ddaa704cdf561fb0ae9f. 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/USA2P2355197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85ea33005145fb550b71d421f0b9c66621ac72fd878a075306b444d1f5aef8b. 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/ES64E2485848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba1215d000b14efce1f258bd170fa71c07b0756d72f25ecd66c5c13d86bad0a. 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/ES64E2488744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108fa28d9c4c9d7de5eb5fe792a825c5d342796757e5a937af7d8cb01662a4ad. 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/ES64E2483827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2af14c9d9bbb9822a4155ea6bb9c505a9c8b72beb32ee8fc3a26fe43473f19b. 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/ES5022401842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd40028d436a072155c88f3f05c4c928cdadccceddb931e01fd81ef8ae357c86. 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/ES75E2413037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4966bb55f74058626230bb3ea3c532bfdb5bacfd4cdaec2d66221ccf1389d8f3. 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/ARC5Y2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6410377096f9902324d9a0a7db4de2704deacffa712f3812819e71e596644bc6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMBZ92467942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55629c03008c0ddf7966ceb3dfc90191f2eb239d828a8035686ed6140496fe48. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES64E2493995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576a3d016dbd2994f802e0c7b0fabff0e9ccd4466cfaad470d28e6fa8cbfd472. 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/ES64E2483826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd6772e39a0fae8568595b236777d074a9450c1a68b8d1a56fd5656a51d1e61. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES64E2484648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328d2c94be0fc29fdfb56c2dbed3444c42eecc5c4519fc173188666c353fd043. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES64E2470933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80346867e3a0351c5300eb72c0a33be60faa610f01aed81729da70ae0c41982. 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/ES64E2469211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5735cafe1a3af7bd12c37f870785c3a3f46f5e77403981460a7bfafb682379e9. 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/ES64E2466373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2e04a27078dfdec6fb099621f1d5bc64ad50a3d49039d69d00936865f47d8. 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/ES64E2322032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe4e4ac269898956236b0dc9cc3f1c9454baaef72b647fe72d774ee82867c2f. 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/ES64E2312318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a134470001d22e4f2d64fe46b3f531d9daffab9470ef360ffd9f743c92b9eb2. 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/ES5052300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a336a1d6fa2917ac0f5fd9b400e2006232af82c99803dbec88d5c462db5784a. 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/ES64E2306816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1dc156745145e1ac26c25814fdb0e79f8c3c5c0bc35215ce0a0d35b73d956. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES64E2304153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17993bd406553a176937d9fcf8bc1f8382fa4514b1f69aa1c5d92ae6dd84aeeb. 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/QZDA72348705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fd5ae8f147238fc23d9e7f083053733ac50351af873314e3019af6a9d4f5ef. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDA52312530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7917a416975c631807e14b83f4f650ed65afc2f9ac93a335cda6427cb2e898. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKXN22293009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9846489580bd13743ffb95cc2ab8f99d0c80db05d89f390cbbd46ff097ae8bce. 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/QZTB32227671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e55c73738bbb9695407fb28aa1760f97aafae4aa3a725d7c043db73fc47088e. 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/QZPLR2254071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8550fce158ca292d70b11cce4b8cbfa4f0f9d11987e6a1392df3f290db00ae0. 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/QZMER2253565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f823ab90175255ce66dd314a84d43328482a6d3d298986fbb0f4ab3fafa90e. 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/QZHNA2218739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff870b9f31d7f7e3adebd8c6f165ec0843f6418f3eff7586eac1feed82436a53. 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/QZES62224816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7638656a7a6c487f8f84abb63c4724c51b15e61773743489eefe5d3ef75a3c0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZFZ72222751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5380e65b495a527f87ca670e3639dc9d23364cb2ffd65818822fc879489b5276. 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/QZFYZ2220189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44900eef81172608664d9d29448f15ea642b70384f3d223790364c2245fdf9de. 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/QZNWY2109456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e11483852092ec926bf2c751f6136e9d72c3594e151eb07e559d873e3025c8. 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/QZMEP2113845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3c6e1ad9aab25339af8688d79a76d25d445f1977f6b0a82b84f846aac4ef6a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZMEM2188521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae73574cf953baf9b4aa7a99eb41ef75b4ea73155bed782e651327b2e7e83bf. 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/QZMEM2174922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cef348fae4075639db6bfb9f691a775f1d435037359c4299b399a0bd3befdc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMFME2149628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749ae182c651383a973f06a77887f647e69639a172d1707e657c6362c744d829. 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/QZK6Q2101161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e1e72a39d1c592745864e9c7ce16c0457f5fd6c97e5ae9ae300e6898a900be. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZFZ32162060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb6a2a7bb5b3dfce877eb2d6bd54086c93d8d64feee934bd465c21627d89aa7. 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/GX3Q92470161.