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 0xaac429327a5fa2b5fff48cd1185f663874c85d0eea88036440ff57896e7a3a47. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c6856c2-f619-40ce-a698-0c337501daaf.json and https://artists.proofprofile.net/proofs/artist/2c6856c2-f619-40ce-a698-0c337501daaf.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 0x252e2a0b2a5ae433a5c76664120ec413d7ec98b9459f2707ea8bf88cd267e719. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/NLA240100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2851d3b4e7912b5f04b65730761ea30f73a908a00b1726b162eab51c30c8f0. 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/NLA249900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6b3bf0da23f471e04aadfe648dd90e600308738646dcee03ac0435b46eec53. 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/NLA240200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eac4a16c20b2b447918451eddb68457d42434d4330cc81903e8d2cb4100cf1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLA240100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688ccd9be877433c3cc03b4304ede01cc723c92ff80252c2dd29b4f5d4a0fcc5. 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/NLA240604190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6048ab2b00fc5e20c045ecec176cdf7b12f792b5004464b1f0ec03bdb841d0. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/NLA240604193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94dfd8db162754d7cccaa96d1f00efaf4a5e46a234353b57e8af335eda798c6. 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/NLA249900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16970ad493e51673eb911be1c17374bd85fac67d94d16c11ecd6856d2464fe87. 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/NLA240100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9224a20f8baf2533a6b68bf1ddfa471675b499b7b4076d644ae47c11cde6587. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLA240300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa47eaea46667aa1daf58e47675cd052ad0bd38c386d34022fed6fb98526b841. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLA240303058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f5567b8bfda22c1f4b16739851615ed88c6d270d3816907849566b830bd08. 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/NLA240100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab15c75fd4c3fd3219fa884956babe19c67ba41103f7d90f916da88d7163a84. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:12Z), 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/NLA240605433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3df24708e5edb5d11895b03f72825e1ce011e5d579afc4717563e4cd2bcfa. 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/NLA240100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d05d4c8acb1d865f7df1a15613d8b32bb1963c21122998c915c03d875e9ae0a. 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/NLA240303080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8722dad56524ab39a20fe8940108f202e87e02466b710f2a36cbe9590825106f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NLA240605432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20854bff170a997d106c766857515f8db4c3fd067d15d2345bb2f82ba9a2ef1. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/NLA240605429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715aa416744f73ec960ea4fc66818ef62604487722aac5e052fe94af3e3100ad. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLA240604466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f206ce151a59ef1273d6555170c756b95c3170755ad79b655a5c3db5e63ed3. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/NLA240300484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f4f49ebe4f2fd09e6d997ae80a45eb806c5119378935955d1ae783f1ab493. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLA240300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7c5ecd5b429d82d3d6913a54063bc86965f08d716eb2d28f0d7bb709329bfe. 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/NLA240604468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4629de51e8d25956495adf77eb9e6293c4f707ca3e4076a98d85794c01372e4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLA240604464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafac67525c81111ab9ed99f3fd88e0b476bfc84092b3b8f057913691e544ebe5. 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/NLA240604469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d6119dff7ed7910173872beeaecea53cbe806f6e79d9f325942c629e72f316. 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/NLA240604203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0615b73dde6813dadb2c4a76d2a5e80272344c30ff3572dc5e1f649dbd0f5019. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/NLA240303076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9c6e27b9d9e0d8fd80da42e2b277aa26d2e8b1a3735ea97193469d480ab0d5. 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/NLA249900090.
Wanneer Je Alles Hebt Verloren In Je Leven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1148bde21c21c8386a0d054c3caf690d0bb32c31f95379cb04c0715ca5c3ceb9. 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/NLA249600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f1b11eea0deebc0c0745cf5211c39b7c8134be273ab090b237e9055fa34529. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:16Z), 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/NLA249700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0030246c2b1a244378bbe97d673a77ec10703667d2a9647944e70a22fc32b55e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLA240303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a88cee3b5a1ea893705482a0d66581fa05fcd253aae920a26393358eec5d5c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLD020200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5000adfa06849bc8aeb1bae878ee6b6c2514d1229aa0e060d0005430d388607e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLD020300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd874b5eea2ac13b2973830bd609b6c573c6f1a5c496930b166625629e1ffb056. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLD020300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb16d400a2df913f0d06254d7454325ed0729b301dd3542dd57c5fe9934ed73. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:25:24Z), 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/NLD020300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16970ad493e51673eb911be1c17374bd85fac67d94d16c11ecd6856d2464fe87. 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/NLA240100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212109e4a9fd1c8f814d5bdae0bce944e7b5e22fdd7d6d58af00e618f167903e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLA240402354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62f0aa84a35cb770d55d7f3ee7b6c10087ae933aaa860340681de1d2ca3b178. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLAX70923585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912458567ea5f1a55231a5216128ea19f15e0dc3cfe887c112bf26175c6c8e58. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:27Z), 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/NLAX70923590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b452cf0e1966c329e396860b7b9a2ffad507101df91751dc0834dfb7d23ffc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:28Z), 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/NLZ291600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97d461fd72e3eeeadd620b20609b34bdf2dbbaefd8df9842294b1a9df4abcb4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLA249900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9d4a274cc2689fd589d62a006375fa5e0094216136383b68b0ff012741ddc7. 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/NLA249900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c9c447ee662832a52460c1b5466100fa32787c48810d80bdfab64b0a02c77. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLA6A1900025.
Hollandse Sterren - Allermooiste Duetten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1148bde21c21c8386a0d054c3caf690d0bb32c31f95379cb04c0715ca5c3ceb9. 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/NLA249600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf831a4f20dfdc46bd48f1f647888ee09288f70b216b6d3471bc503e144c7585. 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/NLA240000524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c478b5ed46310282b5b9a6b5267aa17e8831e14ebfcac1214f74356ac53d454. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLA249900098.
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